1 SENDMAIL RELEASE NOTES 2 @(#)RELEASE_NOTES 8.7.Beta (Berkeley) 06/20/95 3 4This listing shows the version of the sendmail binary, the version 5of the sendmail configuration files, the date of release, and a 6summary of the changes in that release. 7 88.7/8.7 95/xx/xx CURRENTLY IN BETA PRERELEASE!!! 9 Fix a problem that could cause sendmail to run out of file 10 descriptors due to a trashed data structure after a 11 vfork. Fix from Brian Coan of the Institute for 12 Global Communications. 13 Change the VRFY response if you have disabled VRFY -- some 14 people seemed to think that it was too rude. 15 Avoid reference to uninitialized file descriptor if HASFLOCK 16 was not defined. This was used "safely" in the sense 17 that it only did a stat, but it would have set the 18 map modification time improperly. Problem pointed out 19 by Roy Mongiovi of Georgia Tech. 20 Clean up the Subject: line on warning messages and return 21 receipts so that they don't say "Returned mail:"; this 22 can be confusing. 23 Move ruleset entry/exit debugging from 21.2 to 21.1 -- this is 24 useful enough to make it worthwhile printing on "-d". 25 Avoid logging alias statistics every time you read the alias 26 file on systems with no database method compiled in. 27 If you have a name with a trailing dot, and you try looking it 28 up using gethostbyname without the dot (for /etc/hosts 29 compatibility), be sure to turn off RES_DEFNAMES and 30 RES_DNSRCH to avoid finding the wrong name accidently. 31 Problem noted by Charles Amos of the University of 32 Maryland. 33 Don't do timeouts in collect if you are not running SMTP. 34 There is nothing that says you can't have a long 35 running program piped into sendmail (possibly via 36 /bin/mail, which just execs sendmail). Problem reported 37 by Don "Truck" Lewis of Silicon Systems. 38 Try gethostbyname() even if the DNS lookup fails iff option I 39 is not set. This allows you to have hosts listed in 40 NIS or /etc/hosts that are not known to DNS. It's normally 41 a bad idea, but can be useful on firewall machines. This 42 should really be broken out on a separate flag, I suppose. 43 Avoid compile warnings against BIND 4.9.3, which uses function 44 prototypes. From Don Lewis of Silicon Systems. 45 Avoid possible incorrect diagnosis of DNS-related errors caused 46 by things like attempts to resolve uucp names using 47 $[ ... $] -- the fix is to clear h_errno at appropriate 48 times. From Kyle Jones of UUNET. 49 SECURITY: avoid denial-of-service attacks possible by destroying 50 the alias database file by setting resource limits low. 51 This involves adding two new compile-time options: 52 HASSETRLIMIT (indicating that setrlimit(2) support is 53 available) and HASULIMIT (indicating that ulimit(2) support 54 is available -- the Release 3 form is used). The former 55 is assumed on BSD-based systems, the latter on System 56 V-based systems. Attack noted by Phil Brandenberger of 57 Swarthmore University. 58 New syntaxes in test (-bt) mode: 59 ``.Dmvalue'' will define macro "m" to "value". 60 ``.Ccvalue'' will add "value" to class "c". 61 ``.Sruleset'' will dump the contents of the indicated 62 ruleset. 63 ``-ddebug-spec'' is equivalent to the command-line 64 -d debug flag. 65 ``$m'' will print the value of macro "m". 66 ``/mx host'' returns the MX records for ``host''. 67 ``/try address'' will parse address, returning the value of 68 crackaddr (essentially, the comment information) 69 and the parsed address (the same as -bv). 70 ``/tryflags flags'' will set flags used by parsing. The 71 flags can be `H' for header or `E' for envelope, 72 and `S' for sender or `R' for recipient. These 73 can be combined, so `HR' sets flags for header 74 recipients. 75 Somewhat better handling of UNIX-domain socket addresses -- it 76 should show the pathname rather than hex bytes. 77 Restore ``-ba'' mode -- this reads a file from stdin and parses 78 the header for envelope sender information and uses 79 CR-LF as message terminators. It was thought to be 80 obsolete (used only for Arpanet NCP protocols), but it 81 turns out that the UK ``Grey Book'' protocols require 82 that functionality. 83 Fix a fix in previous release -- if gethostname and gethostbyname 84 return a name without dots, and if an attempt to canonify 85 that name fails, wait one minute and try again. This can 86 result in an extra 60 second delay on startup if your system 87 hostname (as returned by hostname(1)) has no dot and no names 88 listed in /etc/hosts or your NIS map have a dot. 89 Check for proper domain name on HELO and EHLO commands per 90 RFC 1123 section 5.2.5. Problem noted by Thomas Dwyer III 91 of Michigan Technological University. 92 Relax chownsafe rules slightly -- old version said that if you 93 can't tell if _POSIX_CHOWN_RESTRICTED is set (that is, 94 if fpathconf returned EINVAL or ENOSYS), assume that 95 chown is not safe. The new version falls back to whether 96 you are on a BSD system or not. This is important for 97 SunOS, which apparently always returns one of those 98 error codes. This impacts whether you can mail to files 99 or not. 100 Syntax errors such as unbalanced parentheses in the configuration 101 file could be omitted if you had "Oem" prior to the 102 syntax error in the config file. Change to always print 103 the error message. It was especially wierd because it 104 would cause a "warning" message to be sent to the Postmaster 105 for every message sent (but with no transcript). Problem 106 noted by Gregory Paris of Motorola. 107 Rewrite collect and putbody to handle full 8-bit data, including 108 zero bytes. These changes are internally extensive, but 109 should have minimal impact on external function. 110 Allow full words for option names -- if the option letter is 111 (apparently) a space, then take the word following -- e.g., 112 O MatchGECOS=TRUE 113 The full list of old and new names is as follows: 114 7 SevenBitInput 115 8 EightBitMode 116 A AliasFile 117 a AliasWait 118 B BlankSub 119 b MinFreeBlocks/MaxMessageSize 120 C CheckpointInterval 121 c HoldExpensive 122 D AutoRebuildAliases 123 d DeliveryMode 124 E ErrorHeader 125 e ErrorMode 126 f SaveFromLine 127 F TempFileMode 128 G MatchGECOS 129 H HelpFile 130 h MaxHopCount 131 i IgnoreDots 132 I ResolverOptions 133 J ForwardPath 134 j SendMimeErrors 135 k ConnectionCacheSize 136 K ConnectionCacheTimeout 137 L LogLevel 138 l UseErrorsTo 139 m MeToo 140 n CheckAliases 141 O DaemonPortOptions 142 o OldStyleHeaders 143 P PostmasterCopy 144 p PrivacyOptions 145 Q QueueDirectory 146 q QueueFactor 147 R DontPruneRoutes 148 r, T Timeout 149 S StatusFile 150 s SuperSafe 151 t TimeZoneSpec 152 u DefaultUser 153 U UserDatabaseSpec 154 V FallbackMXhost 155 v Verbose 156 w TryNullMXList 157 x QueueLA 158 X RefuseLA 159 Y ForkEachJob 160 y RecipientFactor 161 z ClassFactor 162 Z RetryFactor 163 To avoid possible problems with an older sendmail, 164 configuration level 6 is accepted by this version of 165 sendmail; any config file using the new names should 166 specify "V6" in the configuration. 167 Change address parsing to properly note that a phrase before a 168 colon and a trailing semicolon are essentially the same 169 as text outside of angle brackets (i.e., sendmail should 170 treat them as comments). This is to handle the 171 ``group name: addr1, addr2, ..., addrN;'' syntax (it will 172 assume that ``group name:'' is a comment on the first 173 address and the ``;'' is a comment on the last address). 174 This requires config file support to get right. It does 175 understand that :: is NOT this syntax, and can be turned 176 off completely by setting the ColonOkInAddresses option. 177 Level 6 config files added with new mailer flags: 178 A Addresses are aliasable. 179 i Do udb rewriting on envelope as well as header 180 sender lines. Applies to the from address mailer 181 flags rather than the recipient mailer flags. 182 j Do udb rewriting on header recipient addresses. 183 Applies to the sender mailer flags rather than the 184 recipient mailer flags. 185 k Disable check for loops when doing HELO command. 186 o Always run as the mail recipient, even on local 187 delivery. 188 w Check for an /etc/passwd entry for this user. 189 5 Pass addresses through ruleset 5. 190 : Check for :include: on this address. 191 | Check for |program on this address. 192 / Check for /file on this address. 193 @ Look up sender header addresses in the user 194 database. Applies to the mailer flags for the 195 mailer corresponding to the envelope sender 196 address, rather than to recipient mailer flags. 197 Pre-level 6 configuration files set A, w, 5, :, |, /, and @ 198 on the "local" mailer, the o flag on the "prog" and "*file*" 199 mailers, and the ColonOkInAddresses option. 200 Eight-to-seven bit MIME conversions. This borrows ideas from 201 John Beck of Hewlett-Packard, who generously contributed 202 their implementation to me, which I then didn't use (see 203 mime.c for an explanation of why). This adds the 204 EightBitMode option (a.k.a. `8') and an F=8 mailer flag 205 to control handling of 8-bit data. These have to cope with 206 two types of 8-bit data: unlabelled 8-bit data (that is, 207 8-bit data that is entered without declaring it as 8-bit 208 MIME -- technically this is illegal according to the 209 specs) and labelled 8-bit data (that is, it was declared 210 as 8BITMIME in the ESMTP session or by using the 211 -B8BITMIME command line flag). If the F=8 mailer flag is 212 set then 8-bit data is sent to non-8BITMIME machines 213 instead of converting to 7 bit (essentially using 214 just-send-8 semantics). The values for EightBitMode are: 215 m convert unlabelled 8-bit input to 8BITMIME, and do 216 any necessary conversion of 8BITMIME to 7BIT 217 (essentially, the full MIME option). 218 p pass unlabelled 8-bit input, but convert labelled 219 8BITMIME input to 7BIT as required (default). 220 s strict adherence: reject unlabelled 8-bit input, 221 convert 8BITMIME to 7BIT as required. The F=8 222 flag is ignored. 223 Unlabelled 8-bit data is rejected in mode `s' regardless of 224 the setting of F=8. 225 Add new internal class 'n', which is the set of MIME Content-Types 226 which can not be 8 to 7 bit encoded because of other 227 considerations. Types "multipart/*" and "message/*" are 228 never directly encoded (although their components can be). 229 Add new internal class 'm', which is the set of subtypes of the 230 MIME message/* content type that can be treated as though 231 they are an RFC822 message. It is predefined to have 232 "rfc822". Suggested By Kari Hurtta. 233 Add new internal class 'e'. This is the set of MIME 234 Content-Transfer-Encodings that can be converted to 235 a seven bit format (Quoted-Printable or Base64). It is 236 preinitialized to contain "7bit", "8bit", and "binary". 237 Add C=charset mailer parameter and the the DefaultCharSet option (no 238 short name) to set the default character set to use in the 239 Content-Type: header when doing encoding of an 8-bit message 240 which isn't marked as MIME into MIME format. If the C= 241 parameter is set on the Envelope From address, use that as 242 the default encoding; else use the DefaultCharSet option. 243 If neither is set, it defaults to "unknown-8bit" as 244 suggested by RFC 1428 section 3. 245 Allow ``U=user:group'' field in mailer definition to set a default 246 user and group that a mailer will be executed as. This 247 overrides the 'u' and 'g' options, and if the `F=S' flag is 248 also set, it is the uid/gid that will always be used (that 249 is, the controlling address is ignored). The values may be 250 numeric or symbolic; if only a symbolic user is given (no 251 group) that user's default group in the passwd file is used 252 as the group. Based on code donated by Chip Rosenthal of 253 Unicom. 254 Allow `u' option to also accept user:group as a value, in the same 255 fashion as the U= mailer option. 256 Add the symbolic time zone name in the Arpanet format dates (as 257 a comment). This adds a new compile-time configuration 258 flag: TZ_TYPE can be set to TZ_TM_NAME (use the value 259 of (struct tm *)->tm_name), TZ_TM_ZONE (use the value 260 of (struct tm *)->tm_zone), TZ_TZNAME (use extern char 261 *tzname[(struct tm *)->tm_isdst]), TZ_TIMEZONE (use 262 timezone()), or TZ_NONE (don't include the comment). Code 263 from Chip Rosenthal. 264 The "Timeout" option (formerly "r") is extended to allow suboptions. 265 For example, 266 O Timeout.helo = 2m 267 There are also two new suboptions "queuereturn" and 268 "queuewarn"; these subsume the old T option. Thus, to 269 set them both the preferred new syntax is 270 O Timeout.queuereturn = 5d 271 O Timeout.queuewarn = 4h 272 Sort queue by host name instead of by message priority if the 273 QueueSortOrder option (no short name) is set is set to 274 ``host''. This makes better use of the connection cache, 275 but may delay more ``interactive'' messages behind large 276 backlogs under some circumstances. This is probably a 277 good option if you have high speed links or don't do lots 278 of ``batch'' messages, but less good if you are using 279 something like PPP on a 14.4 modem. Based on code 280 contributed by Roy Mongiovi of Georgia Tech (my main 281 contribution was to make it configurable). 282 Save i-number of df file in qf file to simplify rebuilding of queue 283 after disasterous disk crash. Suggested by Kyle Jones of 284 UUNET; closely based on code from KJS DECWRL code written 285 by Paul Vixie. NOTA BENE: The qf files produced by 8.7 286 are NOT back compatible with 8.6 -- that is, you can convert 287 from 8.6 to 8.7, but not the other direction. 288 Add ``F=d'' mailer flag to disable all use of angle brackets in 289 route-addrs in envelopes; this is because in some cases 290 they can be sent to the shell, which interprets them as 291 I/O redirection. 292 Don't include error file (option E) with return-receipts; this 293 can be confusing. 294 Don't send "Warning: cannot send" messages to owner-* or 295 *-request addresses. Suggested by Christophe Wolfhugel 296 of the Institut Pasteur, Paris. 297 Allow -O command line flag to set long form options. 298 Add "MinQueueAge" option to set the minimum time between attempts 299 to run the queue. For example, if the queue interval 300 (-q value) is five minutes, but the minimum queue age 301 is fifteen minutes, jobs won't be tried more often than 302 once every fifteen minutes. This can be used to give 303 you more responsiveness if your delivery mode is set to 304 queue-only. 305 Allow "fileopen" timeout (default: 60 seconds) for opening 306 :include: and .forward files. 307 Add "-k", "-v", and "-z" flags to map definitions; these set the 308 key field name, the value field name, and the field 309 delimiter. The field delimiter can be a single character 310 or the sequence "\t" or "\n" for tab or newline. 311 These are for use by NIS+ and similar access methods. 312 Change maps to always strip quotes before lookups; the -q flag 313 turns off this behaviour. Suggested by Motonori Nakamura. 314 Add "nisplus" map class. Takes -k and -v flags to choose the 315 key and value field names respectively. Code donated by 316 Sun Microsystems. 317 Add "hesiod" map class. The "file name" is used as the 318 "HesiodNameType" parameter to hes_resolve(3). Returns the 319 first value found for the match. Code donated by Scott 320 Hutton of Indiana University. 321 Add "netinfo" (NeXT NetInfo) map class. Maps can have a -k flag to 322 specify the name of the property that is searched as the 323 key and a -v flag to specify the name of the property that 324 is returned as the value (defaults to "members"). The 325 default map is "/aliases". 326 Add "text" map class. This does slow, linear searches through 327 text files. The -z flag specifies a column delimiter 328 (defaults to any sequence of white space), the -k flag 329 sets the key column number, and the -v flag sets the 330 value column number. Lines beginning with `#' are treated 331 as comments. 332 Add "program" map class to execute arbitrary programs. The search 333 key is presented as the last argument; the output is one 334 line read from the programs standard output. Exit statuses 335 are from sysexits.h. 336 Add "sequence" map class -- searches maps in sequence until it 337 finds a match. For example, the declarations: 338 Kmap1 ... 339 Kmap2 ... 340 Kmapseq sequence map1 map2 341 defines a map "mapseq" that first searches map1; if the 342 value is found it is returned immediately, otherwise 343 map2 is searched and the value returned. 344 Add "switch" map class. This is much like "sequence" except that 345 the ordering is fetched from an external file, usually 346 the system service switch. The parameter is the name of 347 the service to switch on, and the maps that it will use 348 are this name followed by ".service_type". For example, 349 if the declaration of the map is 350 Ksample switch hosts 351 and the system service switch specifies that hosts are 352 looked up using dns and nis in that order, then this is 353 equivalent to 354 Ksample sequence hosts.dns hosts.nis 355 The subordinate maps must already be defined. 356 Add "user" map class -- looks up users using getpwnam. Takes a 357 "-v field" flag on the definition that tells what passwd 358 entry to return -- legal values are name, passwd, uid, gid, 359 gecos, dir, and shell. Generally expected to be used with 360 the -m (matchonly) flag. 361 Add "bestmx" map class -- returns the best MX value for the host 362 listed as the value. If there are several "best" MX records 363 for this host, one will be chosen at random. 364 Add "userdb" map class -- looks up entries in the user database. 365 The "file name" is actually the tag that will be used, 366 typically "mailname". If there are multiple entries 367 matching the name, the one chosen is undefined. 368 Add multiple queue timeouts (both return and warning). These are 369 set by the Precedence: or Priority: header fields to one of 370 three values. If a Priority: is set and has value "normal", 371 "urgent", or "non-urgent" the corresponding timeouts are 372 used. If no priority is set, the Precedence: is consulted; 373 if negative, non-urgent timeouts are used; if greater than 374 zero, urgent timeouts are used. Otherwise, normal timeouts 375 are used. The timeouts are set by setting the six timeouts 376 queue{warn,return}.{urgent,normal,non-urgent}. 377 Fix problem when a mail address is resolved to a $#error mailer 378 with a temporary failure indication; it works in SMTP, 379 but when delivering locally the mail is silently discarded. 380 This patch, from Kyle Jones of UUNET, bounces it instead 381 of queueing it (queueing is very hard). 382 When using /etc/hosts or NIS-style lookups, don't assume that 383 the first name in the list is the best one -- instead, 384 search for the first one with a dot. For example, if 385 an /etc/hosts entry reads 386 128.32.149.68 mammoth mammoth.CS.Berkeley.EDU 387 this change will use the second name as the canonical 388 machine name instead of the initial, unqualified name. 389 Change dequote map to replace spaces in quoted text with a value 390 indicated by the -s flag on the dequote map definition. 391 For example, ``Mdequote dequote -s_'' will change 392 "Foo Bar" into an unquoted Foo_Bar instead of leaving it 393 quoted (because of the space character). Suggested by Dan 394 Oscarsson for use in X.400 addresses. 395 Implement long macro names as ${name}; long class names can 396 be similarly referenced as $={name} and $~{name}. 397 Definitions are (e.g.) ``D{name}value''. Names that have 398 a leading lower case letter or punctuation characters are 399 reserved for internal use by sendmail; i.e., config files 400 should use names that begin with a capital letter. Based 401 on code contributed by Dan Oscarsson. 402 Fix core dump if getgrgid returns a null group list (as opposed 403 to an empty group list, that is, a pointer to a list 404 with no members). Fix from Andrew Chang of Sun Microsystems. 405 Fix possible core dump if malloc fails -- if the malloc in xalloc 406 failed, it called syserr which called newstr which called 407 xalloc.... The newstr is now avoided for "panic" messages. 408 Reported by Stuart Kemp of James Cook University. 409 Improve connection cache timeouts; previously, they were not even 410 checked if you were delivering to anything other than an 411 IPC-connected host, so a series of (say) local mail 412 deliveries could cause cached connections to be open 413 much longer than the specified timeout. 414 If an incoming message exceeds the maximum message size, stop 415 writing the incoming bytes to the queue data file, since 416 this can fill your mqueue partition -- this is a possible 417 denial-of-service attack. 418 Don't reject all numeric local user names unless HESIOD is 419 defined. It turns out that Posix allows all-numeric 420 user names. Fix from Tony Sanders of BSDI. 421 Add service switch support. If the local OS has a service 422 switch (e.g., /etc/nsswitch.conf on Solaris or /etc/svc.conf 423 on DEC systems) that will be used; otherwise, it falls back 424 to using a local mechanism based on the ServiceSwitchFile 425 option (default: /etc/service.switch). For example, if the 426 service switch lists "files" and "nis" for the aliases 427 service, that will be the default lookup order. the "files" 428 ("local" on DEC) service type expands to any alias files 429 you listed in the configuration file, even if they aren't 430 actually file lookups. 431 Option I (NameServerOptions) no longer sets the "UseNameServer" 432 variable which tells whether or not DNS should be considered 433 canonical. This is now determined based on whether or not 434 "dns" is in the service list for "hosts". 435 Add preliminary support for the ESMTP "DSN" extension (Delivery 436 Status Notifications). This is not yet a standard 437 and the implementation is for experimentation only. 438 For this reason it only announces itself as "X-DSN-0" 439 instead of "DSN". DSN notifications override 440 Return-Receipt-To:. 441 Add T=mtstype keyletter to mailer definitions to define the value 442 for the Final-MTS-Type: and Remote-MTS-Type: fields in the 443 DSN-standard return message. 444 Extend heuristic to force running in ESMTP mode to look for the 445 six-character string "ESMTP " anywhere in the 220 greeting 446 message (not just the second line). This is to provide 447 better compatibility with other ESMTP servers. 448 Print sequence number of job when running the queue so you can 449 easily see how much progress you have made. Suggested 450 by Peter Wemm of DIALix. 451 Map newlines to spaces in logged message-ids; some versions of 452 syslog truncate the rest of the line after newlines. 453 Suggested by Fletcher Mattox of U. Texas. 454 Move up forking for job runs so that if a message is split into 455 multiple envelopes you don't get "fork storms" -- this 456 also improves the connection cache utilization. 457 Accept "<<>>", "<<<>>>", and so forth as equivalent to "<>" for 458 the purposes of refusing to send error returns. Suggested 459 by Motonori Nakamura of Ritsumeikan University. 460 Relax rules on when a file can be written when referenced from 461 the aliases file: use the default uid/gid instead of the 462 real uid/gid. This allows you to create a file owned by 463 and writable only by the default uid/gid that will work 464 all the time (without having the setuid bit set). Change 465 suggested by Shau-Ping Lo and Andrew Cheng of Sun 466 Microsystems. 467 Add "DialDelay" option (no short name) to provide an "extra" 468 delay for dial on demand systems. If this is non-zero 469 and a connect fails, sendmail will wait this long and 470 then try again. If it takes longer than the kernel 471 timeout interval to establish the connection, this 472 option can give the network software time to establish 473 the link. The default units are seconds. 474 Move logging of sender information to be as early as possible; 475 previously, it could be delayed a while for SMTP mail 476 sent to aliases. Suggested by Brad Knowles of the 477 Defense Information Systems Agency. 478 Call res_init() before setting RES_DEBUG; this is required by 479 BIND 4.9.3, or so I'm told. From Douglas Anderson of 480 the National Computer Security Center. 481 Add xdelay= field in logs -- this is a transaction delay, telling 482 you how long it took to deliver to this address on the 483 last try. It is intended to be used for sorting mailing 484 lists to favor "quick" addresses. Provided for use by 485 the mailprio scripts (see below). 486 If a map cannot be opened, and that map is non-optional, and 487 an address requires that map for resolution, queue the 488 map instead of bouncing it. This involves creating a 489 pseudo-class of maps called "bogus-map" -- if a required 490 map cannot be opened, the class is changed to bogus-map; 491 all queries against bogus-map return "tempfail". The 492 bogus-map class is not directly accessible. A sample 493 implementation was donated by Jem Taylor of Glasgow 494 University Computing Service. 495 Don't make a bad ``MAIL FROM:'' address on one message blow away 496 other messages to the same host later in the queue. 497 Problem noted by Eric Prestemon of American University. 498 Fix a possible core dump when mailing to a program that talks 499 SMTP on its standard input. Fix from Keith Moore of 500 the University of Kentucky. 501 Make it possible to resolve filenames to $#local $: @ /filename; 502 previously, the "@" would cause it to not be recognized 503 as a file. Problem noted by Brian Hill of U.C. Davis. 504 Accept a -1 signal to re-exec the daemon. This only works if 505 argv[0] is a full path to sendmail. 506 Fix bug in "addr=..." field in O option on little-endian machines 507 -- the network number wasn't being converted to network 508 byte order. Patch from Kurt Lidl of Pix Technologies 509 Corporation. 510 Pre-initialize the resolver early on; this is to avoid a bug with 511 BIND 4.9.3 that can cause the _res.retry field to get 512 reset to zero, causing all name server lookups to time 513 out. Fix from Matt Day of Artisoft. 514 Restore T line (trusted users) in config file -- but instead of 515 locking out the -f flag, they just tell whether or not 516 an X-Authentication-Warning: will be added. This really 517 just creates new entries in class 't', so "Ft/file/name" 518 can be used to read trusted user names from a file. 519 Trusted users are also allowed to execute programs even 520 if they have a shell that isn't in /etc/shells. 521 Improve NEWDB alias file rebuilding so it will create them 522 properly if they do not already exist. This had been 523 a MAYBENEXTRELEASE feature in 8.6.9. 524 Check for @:@ entry in NIS maps before starting up to avoid 525 (but not prevent, sigh) race conditions. This ought to 526 be handled properly in ypserv, but isn't. Suggested by 527 Michael Beirne of Motorola. 528 Refuse connections if there isn't enough space on the filesystem 529 holding the queue. Contributed by Robert Dana of Wolf 530 Communications. 531 Skip checking for directory permissions in the path to a file 532 when checking for file permissions iff setreuid() 533 succeeded -- it is unnecessary in that case. This avoids 534 significant performance problems when looking for .forward 535 files. Based on a suggestion by Win Bent of USC. 536 Allow symbolic ruleset names. Syntax can be "Sname" to get an 537 arbitrary ruleset number assigned or "Sname = integer" 538 to assign a specific ruleset number. Reference is 539 $>name_or_number. Names can be composed of alphas, digits, 540 underscore, or hyphen (first character must be non-numeric). 541 Allow -o flag on AliasFile lines to make the alias file optional. 542 From Bryan Costales of ICSI. 543 Add NoRecipientAction option to handle the case where there is 544 no legal recipient header in the message. It can take 545 on values: 546 None Leave the message as is. The 547 message will be passed on even 548 though it is in technically 549 illegal syntax. 550 Add-To Add a To: header with any 551 recipients that it can find from 552 the envelope. This risks exposing 553 Bcc: recipients. 554 Add-Apparently-To Add an Apparently-To: header. This 555 has almost no redeeming social value, 556 and is provided only for back 557 compatibility. 558 Add-To-Undisclosed Add a header reading 559 To: undisclosed-recipients:; 560 which will have the effect of 561 making the message legal without 562 exposing Bcc: recipients. 563 Add-Bcc To add an empty Bcc: header. 564 There is a chance that mailers down 565 the line will delete this header, 566 which could cause exposure of Bcc: 567 recipients. 568 The default is NoRecipientAction=None. 569 Truncate (rather than delete) Bcc: lines in the header. This 570 should prevent later sendmails (at least, those that don't 571 themselves delete Bcc:) from considering this message to 572 be non-conforming -- although it does imply that non-blind 573 recipients can see that a Bcc: was sent, albeit not to whom. 574 Add SafeFileEnvironment option. If declared, files named as delivery 575 targets must be regular files in addition to the regular 576 checks. Also, if the option is non-null then it is used as 577 the name of a directory that is used as a chroot(2) 578 environment for the delivery; the file names listed in an 579 alias or forward should include the name of this root. 580 For example, if you run with 581 O SafeFileEnvironment=/arch 582 then aliases should reference "/arch/rest/of/path". If a 583 value is given, sendmail also won't try to save to 584 /usr/tmp/dead.letter (instead it just leaves the job in the 585 queue as Qfxxxxxx). Inspired by *Hobbit*'s sendmail patch kit. 586 Support -A flag for alias files; this will comma concatenate like 587 entries. For example, given the aliases: 588 list: member1 589 list: member2 590 and an alias file declared as: 591 OAhash:-A /etc/aliases 592 the final alias inserted will be "list: member1,member2"; 593 without -A you will get an error on the second and subsequent 594 alias for "list". Contributed by Bryan Costales of ICSI. 595 Line-buffer transcript file. Suggested by Liudvikas Bukys. 596 Fix a problem that could cause very long addresses to core dump in 597 some special circumstances. Problem pointed out by Allan 598 Johannesen. 599 (Internal change.) Change interface to expand() (macro expansion) 600 to be simpler and more consistent. 601 Delete check for funny qf file names. This didn't really give 602 any extra security and caused some people some problems. 603 (If you -really- want this, define PICKY_QF_NAME_CHECK 604 at compile time.) Suggested by Kyle Jones of UUNET. 605 (Internal change.) Change EF_NORETURN to EF_NO_BODY_RETN and 606 merge with DSN code; this is simpler and more consistent. 607 This may affect some people who have written their own 608 checkcompat() routine. 609 (Internal change.) Eliminate `D' line in qf file. The df file 610 is now assumed to be the same name as the qf file (with 611 the `q' changed to a `d', of course). 612 Avoid forking for delivery if all recipient mailers are marked as 613 "expensive" -- this can be a major cost on some systems. 614 Essentially, this forces sendmail into "queue only" mode 615 if all it is going to do is queue anyway. 616 Avoid sending a null message in some rather unusual circumstances 617 (specifically, the RCPT command returns a temporary 618 failure but the connection is lost before the DATA 619 command). Fix from Scott Hammond of Secure Computing 620 Corporation. 621 Change makesendmail to use a somewhat more rational naming scheme: 622 Makefiles and obj directories are named $os.$rel.$arch, 623 where $os is the operating system (e.g., SunOS), $rel is 624 the release number (e.g., 5.3), and $arch is the machine 625 architecture (e.g., sun4). Any of these can be omitted, 626 and anything after the first dot in a release number can 627 be replaced with "x" (e.g., SunOS.4.x.sun4). The previous 628 version used $os.$arch.$rel and was rather less general. 629 Change makesendmail to do a "make depend" in the target directory 630 when it is being created. This involves adding an empty 631 "depend:" entry in most Makefiles. 632 Ignore IDENT return value if the OSTYPE field returns "OTHER", 633 as indicated by RFC 1413. Pointed out by Kari Hurtta 634 of the Finnish Meteorological Institute. 635 Fix problem that could cause multiple responses to DATA command 636 on header syntax errors (e.g., lines beginning with colons). 637 Problem noted by Jens Thomassen of the University of Oslo. 638 Don't let null bytes in headers cause truncation of the rest of 639 the header. 640 Log Authentication-Warning:s. Suggested by Motonori Nakamura. 641 Increase timeouts on message data puts to allow time for receivers 642 to canonify addresses in headers on the fly. This is still 643 a rather ugly heuristic. From Motonori Nakamura. 644 Add "HasWildcardMX" suboption to ResolverOptions; if set, MX 645 records are not used when canonifying names, and when MX 646 lookups are done for addressing they must be fully 647 qualified. This is useful if you have a wildcard MX record, 648 although it may cause other problems. In general, don't use 649 wildcard MX records. Patch from Motonori Nakamura. 650 Eliminate default two-line SMTP greeting message. Instead of 651 adding an extra "ESMTP spoken here" line, the word "ESMTP" 652 is added between the first and second word of the first 653 line of the greeting message (i.e., immediately after the 654 host name). This eliminates the need for the BROKEN_SMTP_PEERS 655 compile flag. Old sendmails won't see the ESMTP, but that's 656 acceptable because SIZE was the only useful extension that 657 old sendmails understand. 658 Avoid gethostbyname calls on UNIX domain sockets during SIGUSR1 659 invoked state dumps. From Masaharu Onishi. 660 Allow on-line comments in .forward and :include: files; they are 661 introduced by the string "<LWSP>#@#<LWSP>", where <LWSP> 662 is a space or a tab. This is intended for native 663 representation of non-ASCII sets such as Japanese, where 664 existing encodings would be unreadable or would lose 665 data -- for example, 666 <motonori@cs.ritsumei.ac.jp> NAKAMURA Motonori 667 (romanized/less information) 668 <motonori@cs.ritsumei.ac.jp> =?ISO-2022-JP?B?GyRCQ2ZCPBsoQg==?= 669 =?ISO-2022-JP?B?GyRCQUdFNRsoQg==?= 670 (with MIME encoding, not human readable) 671 <motonori@cs.ritsumei.ac.jp> #@# ^[$BCfB<^[(B ^[$BAGE5^[(B 672 (native encoding with ISO-2022-JP) 673 The last form is human readable in the Japanese environment. 674 Based on a fix from (surprise!) Motonori Nakamura. 675 Don't make SMTP error returns on MAIL FROM: line be "sticky" for all 676 messages to that host; these are most frequently associated 677 with addresses rather than the host, with the exception of 678 421 (service shutting down). The effect was to cause queues 679 to sometimes take an excessive time to flush. Reported by 680 Robert Sargent of Southern Geographics Technologies. 681 Add Nice=N mailer option to set the niceness at which a mailer will 682 run. 683 When looking for a default config file (that is, not specified using 684 a -C flag), try a configuration file name extended by the 685 binary version number -- e.g., sendmail.8.7.Alpha.9.cf, 686 sendmail.8.7.Alpha.cf, sendmail.8.7.cf, sendmail.8.cf, and 687 sendmail.cf in that order. This should make it easier to 688 test new versions in a shared environment. 689 Log queue runs that are skipped due to high loads. They are logged 690 at LOG_INFO priority iff the log level is > 8. Contributed 691 by Bruce Nagel of Data General. 692 Allow the error mailer to accept a DSN-style error status code 693 instead of an sysexits status code in the host part. 694 Anything with a dot will be interpreted as a DSN-style code. 695 Add new mailer flag: F=3 will tell translations to Quoted-Printable 696 to encode characters that might be munged by an EBCDIC system 697 in addition to the set required by RFC 1521. The additional 698 characters are !, ", #, $, @, [, \, ], ^, `, {, |, }, and ~. 699 (Think of "IBM 360" as the mnemonic for this flag.) 700 Change check for mailing to files to look for a pathname of [FILE] 701 rather than looking for the mailer named *file*. The mapping 702 of leading slashes still goes to the *file* mailer. This 703 allows you to implement the *file* mailer as a separate 704 program, for example, to insert a Content-Length: header 705 or do special security policy. However, note that the usual 706 initial checking for the file permissions is still done, and 707 the program in question needs to be very careful about how 708 it does the file write to avoid security problems. 709 Be able to read ~root/.forward even if the path isn't accessible to 710 regular users. This is disrecommended because sendmail 711 sometimes does not run as root (e.g., when an unsafe option 712 is specified on the command line), but should otherwise be 713 safe because .forward files must be owned by the user for 714 whom mail is being forwarded, and cannot be a symbolic link. 715 Suggested by Forrest Aldrich of Wang Laboratories. 716 Add new "HostsFile" option that is the pathname to the /etc/hosts 717 file. This is used for canonifying hostnames when the 718 service type is "files". 719 Implement programs on F (read class from file) line. The syntax is 720 Fc|/path/to/program to read the output from the program 721 into class "c". 722 Probe the network interfaces to find alternate names for this 723 host. Requires the SIOCGIFCONF ioctl call. Code 724 contributed by SunSoft. 725 Add "E" configuration line to set or propogate environment 726 variables into children. "E<envar>" will propogate 727 the named variable from the environment when sendmail 728 was invoked into any children it calls; "E<envar>=<value>" 729 sets the named variable to the indicated value. Any 730 variables not explicitly named will not be in the child 731 environment. However, sendmail still forces an 732 "AGENT=sendmail" environment variable, in part to enforce 733 at least one environment variable, since many programs and 734 libraries die horribly if this is not guaranteed. 735 Change heuristic for rebuilding both NEWDB and NDBM versions of 736 alias databases -- new algorithm looks for the substring 737 "/yp/" in the file name. This is more portable and involves 738 less overhead. Suggested by Motonori Nakamura. 739 Dynamically allocate the queue work list so that you don't lose 740 jobs in large queue runs. The old QUEUESIZE compile parameter 741 is replaced by QUEUESEGSIZE (the unit of allocation, which 742 should not need to be changed) and the MaxQueueRunSize option, 743 which is the absolute maximum number of jobs that will ever 744 be handled in a single queue run. Based on code contributed 745 by Brian Coan of the Institute for Global Communications. 746 Log message when a message is dropped because it exceeds the maximum 747 message size. Suggested by Leo Bicknell of Virginia Tech. 748 Allow trusted users (those on a T line or in $=t) to use -bs without 749 an X-Authentication-Warning: added. Suggested by Mark Thomas 750 of Mark G. Thomas Consulting. 751 Announce state of compile flags on -d0.1 (-d0.10 throws in the 752 OS-dependent defines). The old semantic of -d0.1 to not 753 run the daemon in background has been moved to -d99.100, 754 and the old 52.5 flag (to avoid disconnect() from closing 755 all output files) has been moved to 52.100. This makes 756 things more consistent (flags below .100 don't change 757 semantics) and separates out the backgrounding so that 758 it doesn't happen automatically on other unrelated debugging 759 flags. 760 If -t is used but no addresses are found in the header, give an 761 error message rather than just doing nothing. Fix from 762 Motonori Nakamura. 763 On systems (like SunOS) where the effective gid is not necessarily 764 included in the group list returned by getgroups(), the 765 `restrictmailq' option could sometimes cause an authorized 766 user to not be able to use `mailq'. Fix from Charles Hannum 767 of MIT. 768 Allow symbolic service names for [IPC] mailers. Suggested by 769 Gerry Magennis of Logica International. 770 Add DontExpandCnames option to prevent $[ ... $] from expanding CNAMEs 771 when running DNS. For example, if the name FTP.Foo.ORG is 772 a CNAME for Cruft.Foo.ORG, then when sitting on a machine in 773 the Foo.ORG domain a lookup of "FTP" returns "Cruft.Foo.ORG" 774 if this option is not set, or "FTP.Foo.ORG" if it is set. 775 This is technically illegal under RFC 822 and 1123, but the 776 IETF is moving toward legalizing it. Note that turning on 777 this option is not sufficient to guarantee that a downstream 778 neighbor won't rewrite the address for you. 779 Add "-m" flag to makesendmail script -- this tells you what object 780 directory and Makefile it will use, but doesn't actually do 781 the make. 782 Do some additional checking on the contents of the qf file to try 783 to detect attacks against the qf file. In particular, 784 abort on any line beginning "From ", and add an "end of 785 file" line -- any data after that line is prohibited. 786 Always use /etc/sendmail.cf, regardless of the arbitrary vendor 787 choices. This can be overridden in the Makefile by using 788 either -DUSE_VENDOR_CF_PATH to get the vendor location 789 (to the extent that we know it) or by defining 790 _PATH_SENDMAILCF (which is a "hard override"). This allows 791 sendmail 8 to have more consistent installation instructions. 792 PORTABILITY FIXES: 793 Solaris 2 from Rob McMahon <cudcv@csv.warwick.ac.uk>. 794 System V Release 4 from Motonori Nakamura of Ritsumeikan 795 University. This expands the disk size 796 checking to include all (?) SVR4 configurations. 797 System V Release 4 from Kimmo Suominen -- initgroups(3) 798 and setrlimit(2) are both available. 799 System V Release 4 from sob@sculley.ffg.com -- some versions 800 apparently "have EX_OK defined in other headerfiles." 801 Linux Makefile typo. 802 Linux getusershell(3) is broken in Slackware 2.0 -- 803 from Andrew Pam of Xanadu Australia. 804 More Linux tweaking from John Kennedy of California State 805 University, Chico. 806 Cray changes from Eric Wassenaar: ``On Cray, shorts, 807 ints, and longs are all 64 bits, and all structs 808 are multiples of 64 bits. This means that the 809 sizeof operator returns only multiples of 8. 810 This requires adaptation of code that really 811 deals with 32 bit or 16 bit fields, such as IP 812 addresses or nameserver fields.'' 813 DG/UX 5.4.3 from Mark T. Robinson <mtr@ornl.gov>. To 814 get the old behaviour, use -DDGUX_5_4_2. 815 DG/UX hack: add _FORCE_MAIL_LOCAL_=yes environment 816 variable to fix bogus /bin/mail behaviour. 817 Tandem NonStop-UX from Rick McCarty <mccarty@mpd.tandem.com>. 818 This also cleans up some System V Release 4 compile 819 problems. 820 Solaris 2: sendmail.cw file should be in /etc/mail to 821 match all the other configuration files. Fix 822 from Glenn Barry of Emory University. 823 Solaris 2.3: compile problem in conf.c. Fix from Alain 824 Nissen of the University of Liege, Belgium. 825 Ultrix: freespace calculation was incorrect. Fix from 826 Takashi Kizu of Osaka University. 827 SVR4: running in background gets a SIGTTOU because the 828 emulation code doesn't realize that "getpeername" 829 doesn't require reading the file. Fix from Peter 830 Wemm of DIALix. 831 Solaris 2.3: due to an apparent bug in the socket emulation 832 library, sockets can get into a "wedged" state where 833 they just return EPROTO; closing and re-opening the 834 socket clears the problem. Fix from Bob Manson 835 of Ohio State University. 836 Hitachi 3050R & 3050RX running HI-UX/WE2: portability 837 fixes from Akihiro Hashimoto ("Hash") of Chiba 838 University. 839 AIX changes to allow setproctitle to work from Rainer Sch�pf 840 of Zentrum f�r Datenverarbeitung der Universit�t 841 Mainz. 842 AIX changes for load average from Ed Ravin of NASA/Goddard. 843 SCO Unix from Chip Rosenthal of Unicom (code was using the 844 wrong statfs call). 845 ANSI C fixes from Adam Glass (NetBSD project). 846 Stardent Titan/ANSI C fixes from Kate Hedstrom of Rutgers 847 University. 848 DG-UX fixes from Bruce Nagel of Data General. 849 IRIX64 updates from Mark Levinson of the University of 850 Rochester Medical Center. 851 Altos System V (``the first UNIX/XENIX merge the Altos 852 did for their Series 1000 & Series 2000 line; 853 their merged code was licenced back to AT&T and 854 Microsoft and became System V release 3.2'') from 855 Tim Rice <timr@crl.com>. 856 OSF/1 running on Intel Paragon from Jeff A. Earickson 857 <jeff@ssd.intel.com> of Intel Scalable Systems 858 Divison. 859 Amdahl UTS System V 2.1.5 (SVr3-based) from Janet Jackson 860 <janet@dialix.oz.au>. 861 System V Release 4 (statvfs semantic fix) from Alain 862 Durand of I.M.A.G. 863 HP-UX 10.x multiprocessor load average changes from 864 Scott Hutton and Jeff Sumler of Indiana University. 865 Cray CSOS from Scott Bolte of Cray Computer Corporation. 866 Unicos 8.0 from Douglas K. Rand of the University of North 867 Dakota, Scientific Computing Center. 868 Solaris 2.4 fixes from Sanjay Dani of Dani Communications. 869 ConvexOS 11.0 from Christophe Wolfhugel. 870 IRIX 4.0.5 from David Ashton-Reader of CADcentre. 871 ISC UNIX from J. J. Bailey. 872 HP-UX 9.xx on the 8xx series machines from Remy Giraud 873 of Meteo France. 874 HP-UX configuration from Tom Lane <tgl@sss.pgh.pa.us>. 875 IRIX 5.2 and 5.3 from Kari E. Hurtta. 876 FreeBSD 2.0 from Mike Hickey of Federal Data Corporation. 877 Sony NEWS-OS 4.2.1R and 6.0.3 from Motonori Nakamura. 878 Omron LUNA unios-b, mach from Motonori Nakamura. 879 NEC EWS-UX/V 4.2 from Motonori Nakamura. 880 NeXT 2.1 from Bryan Costales. 881 AUX patch thanks to Mike Erwin of Apple Computer. 882 HP-UX 10.0 from John Beck of Hewlett-Packard. 883 Ultrix: allow -DBROKEN_RES_SEARCH=0 if you are using a 884 non-DEC resolver. Suggested by Allan Johannesen. 885 UnixWare 2.0 fixes from Petr Lampa of the Technical 886 University of Brno (Czech Republic). 887 MAKEMAP: allow -d flag to allow insertion of duplicate aliases 888 in type ``btree'' maps. The semantics of this are undefined 889 for regular maps, but it can be useful for the user database. 890 MAKEMAP: lock database file while rebuilding to avoid sendmail 891 lookups while the rebuild is going on. There is a race 892 condition between the open(... O_TRUNC ...) and the lock 893 on the file, but it should be quite small. 894 SMRSH: sendmail restricted shell added to the release. This can 895 be used as an alternative to /bin/sh for the "prog" mailer, 896 giving the local administrator more control over what 897 programs can be run from sendmail. 898 MAIL.LOCAL: add this local mailer to the tape. It is not really 899 part of the release proper, and isn't fully supported; in 900 particular, it does not run on System V based systems and 901 never will. 902 CONTRIB: a patch to rmail.c from Bill Gianopoulos of Raytheon 903 to allow rmail to compile on systems that don't have 904 function prototypes and systems that don't have snprintf. 905 CONTRIB: add the "mailprio" scripts that will help you sort mailing 906 lists by transaction delay times so that addresses that 907 respond quickly get sent first. This is to prevent very 908 sluggish servers from delaying other peoples' mail. 909 Contributed by Tony Sanders of BSDI. 910 CONTRIB: add the "bsdi.mc" file as contributed by Tony Sanders 911 of BSDI. This has a lot of comments to help people out. 912 CONFIG: fix mail from <> so it will properly convert to 913 MAILER-DAEMON on local addresses. 914 CONFIG: fix code that was supposed to catch colons in host 915 names. Problem noted by John Gardiner Myers of CMU. 916 CONFIG: allow use of SMTP_MAILER_MAX in nullclient configuration. 917 From Paul Riddle of the University of Maryland, Baltimore 918 County. 919 CONFIG: Catch and reject "." as a host address. 920 CONFIG: Generalize domaintable to look up all domains, not 921 just unqualified ones. 922 CONFIG: Delete OLD_SENDMAIL support -- as near as I can tell, it 923 was never used and didn't work anyway. 924 CONFIG: Set flags A, w, 5, :, /, |, and @ on the "local" mailer 925 and d on all mailers in the UUCP class. 926 CONFIG: Allow "user+detail" to be aliased specially: it will first 927 look for an alias for "user+detail", then for "user+*", and 928 finally for "user". This is intended for forwarding mail 929 for system aliases such as root and postmaster to a 930 centralized hub. 931 CONFIG: add confEIGHT_BIT_HANDLING to set option 8 (see above). 932 CONFIG: add smtp8 mailer; this has the F=8 (just-send-8) flag set. 933 The F=8 flag is also set on the "relay" mailer, since 934 this is expected to be another sendmail. 935 CONFIG: avoid qualifying all UUCP addresses sent via SMTP with 936 the name of the UUCP_RELAY -- in some cases, this is the 937 wrong value (e.g., when we have local UUCP connections), 938 and this can create unreplyable addresses. From Chip 939 Rosenthal of Unicom. 940 CONFIG: add confRECEIVED_HEADER to change the format of the 941 Received: header inserted into all messages. Suggested by 942 Gary Mills of the University of Manitoba. 943 CONFIG: Make "notsticky" the default; use FEATURE(stickyhost) 944 to get the old behaviour. I did this upon observing 945 that almost everyone needed this feature, and that the 946 concept I was trying to make happen didn't work with 947 some user agents anyway. FEATURE(notsticky) still works, 948 but it is a no-op. 949 CONFIG: Add LUSER_RELAY -- the host to which unrecognized user 950 names are sent, rather than immediately diagnosing them 951 as User Unknown. 952 CONFIG: Add SMTP_MAILER_ARGS, ESMTP_MAILER_ARGS, SMTP8_MAILER_ARGS, 953 and RELAY_MAILER_ARGS to set the arguments for the 954 indicated mailers. All default to "IPC $h". Patch from 955 Larry Parmelee of Cornell University. 956 CONFIG: pop mailer needs F=n flag to avoid "annoying side effects 957 on the client side" and F=P to get an appropriate 958 return-path. From Kimmo Suominen. 959 CONFIG: add FEATURE(local_procmail) to use the procmail program 960 as the local mailer. For addresses of the form "user+detail" 961 the "detail" part is passed to procmail via the -a flag. 962 Contributed by Kimmo Suominen. 963 CONFIG: add MAILER(procmail) to add an interface to procmail for 964 use from mailertables. This lets you execute arbitrary 965 procmail scripts. Contributed by Kimmo Suominen. 966 CONFIG: add T= fields (MTS type) to local, smtp, and uucp mailers. 967 CONFIG: add OSTYPE(ptx2) for DYNIX/ptx 2.x from Sequent. From 968 Paul Southworth of CICNet Systems Support. 969 CONFIG: use -a$g as default to UUCP mailers, instead of -a$f. 970 This causes the null return path to be rewritten as 971 MAILER-DAEMON; otherwise UUCP gets horribly confused. 972 From Michael Hohmuth of Technische Universitat Dresden. 973 CONFIG: Add FEATURE(bestmx_is_local) to cause any hosts that 974 list us as the best possible MX record to be treated as 975 though they were local (essentially, assume that they 976 are included in $=w). This can cause additional DNS 977 traffic, but is easier to administer if this fits your 978 local model. It does not work reliably if there are 979 multiple hosts that share the best MX preference. 980 Code contributed by John Oleynick of Rutgers. 981 CONFIG: Add FEATURE(smrsh) to use smrsh (the SendMail Restricted 982 SHell) instead of /bin/sh as the program used for delivery 983 to programs. If an argument is included, it is used as 984 the path to smrsh; otherwise, /usr/local/etc/smrsh is 985 assumed. 986 CONFIG: Add LOCAL_MAILER_MAX and PROCMAILER_MAILER_MAX to limit the 987 size of messages to the local and procmail mailers 988 respectively. Contributed by Brad Knowles of the Defense 989 Information Systems Agency. 990 CONFIG: Handle leading ``phrase:'' and trailing ``;'' as comments 991 (just like text outside of angle brackets) in order to 992 properly deal with ``group: addr1, ... addrN;'' syntax. 993 CONFIG: Require OSTYPE macro (the defaults really don't apply to 994 any real systems any more) and tweak the DOMAIN macro 995 so that it is less likely that users will accidently use 996 the Berkeley defaults. Also, create some generic files 997 that really can be used in the real world. 998 CONFIG: Add new configuration macros to set character sets for 999 messages _arriving from_ various mailers: LOCAL_MAILER_CHARSET, 1000 SMTP_MAILER_CHARSET, and UUCP_MAILER_CHARSET. 1001 CONFIG: Change UUCP_MAX_SIZE to UUCP_MAILER_MAX for consistency. 1002 The old name will still be accepted for a while at least. 1003 CONFIG: Implement DECNET_RELAY as spec for host to which DECNET 1004 mail (.DECNET pseudo-domain or node::user) will be sent. 1005 As with all relays, it can be ``mailer:hostname''. Suggested 1006 by Scott Hutton. 1007 CONFIG: Add MAILER(mail11) to get DECnet support. Code contributed 1008 by Barb Dijker of Labyrinth Computer Services. 1009 CONFIG: change confCHECK_ALIASES to default to False -- it has poor 1010 performance for large alias files, and this confused many 1011 people. 1012 CONFIG: Add confCF_VERSION to append local information to the 1013 configuration version number displayed during SMTP startup. 1014 CONFIG: fix some.newsgroup.usenet@local.host syntax (previously it 1015 would only work when locally addressed. Fix from 1016 Edvard Tuinder of Cistron Internet Services. 1017 NEW FILES: 1018 cf/cf/cs-hpux10.mc 1019 cf/cf/cs-solaris2.mc 1020 cf/cf/generic-hpux10.mc 1021 cf/cf/generic-hpux9.mc 1022 cf/cf/generic-osf1.mc 1023 cf/cf/generic-solaris2.mc 1024 cf/cf/generic-sunos4.1.mc 1025 cf/cf/generic-ultrix4.mc 1026 cf/cf/huginn.cs.mc 1027 cf/domain/berkeley-only.m4 1028 cf/domain/generic.m4 1029 cf/feature/bestmx_is_local.m4 1030 cf/feature/local_procmail.m4 1031 cf/feature/smrsh.m4 1032 cf/feature/stickydomain.m4 1033 cf/mailer/mail11.m4 1034 cf/mailer/procmail.m4 1035 cf/ostype/amdahl-uts.m4 1036 cf/ostype/hpux10.m4 1037 cf/ostype/isc4.1.m4 1038 cf/ostype/ptx2.m4 1039 cf/ostype/unknown.m4 1040 contrib/bsdi.mc 1041 contrib/mailprio 1042 contrib/rmail.oldsys.patch 1043 smrsh/README 1044 smrsh/smrsh.8 1045 smrsh/smrsh.c 1046 src/Makefiles/Makefile.CSOS 1047 src/Makefiles/Makefile.EWS-UX_V 1048 src/Makefiles/Makefile.HP-UX.10 1049 src/Makefiles/Makefile.IRIX.5.x 1050 src/Makefiles/Makefile.IRIX64 1051 src/Makefiles/Makefile.ISC 1052 src/Makefiles/Makefile.NEWS-OS.4.x 1053 src/Makefiles/Makefile.NEWS-OS.6.x 1054 src/Makefiles/Makefile.NEXTSTEP 1055 src/Makefiles/Makefile.NonStop-UX 1056 src/Makefiles/Makefile.Paragon 1057 src/Makefiles/Makefile.SunOS.5.3 1058 src/Makefiles/Makefile.SunOS.5.4 1059 src/Makefiles/Makefile.SunOS.5.5 1060 src/Makefiles/Makefile.UNIX_SV.4.x.i386 1061 src/Makefiles/Makefile.uts.systemV 1062 src/mime.c 1063 test/t_seteuid.c 1064 RENAMED FILES: 1065 cf/cf/alpha.mc => cf/cf/s2k-osf1.mc 1066 cf/cf/chez.mc => cf/cf/chez.cs.mc 1067 cf/cf/hpux-cs-exposed.mc => cf/cf/cs-hpux9.mc 1068 cf/cf/osf1-cs-exposed.mc => cf/cf/cs-osf1.mc 1069 cf/cf/s2k.mc => cf/cf/s2k-ultrix4.mc 1070 cf/cf/sunos4.1-cs-exposed.mc => cf/cf/cs-sunos4.1.mc 1071 cf/cf/ultrix4.1-cs-exposed.mc => cf/cf/cs-ultrix4.mc 1072 cf/cf/vangogh.mc => cf/cf/vangogh.cs.mc 1073 cf/domain/Berkeley.m4 => cf/domain/Berkeley.EDU.m4 1074 cf/domain/cs-exposed.m4 => cf/domain/CS.Berkeley.EDU.m4 1075 cf/domain/eecs-hidden.m4 => cf/domain/EECS.Berkeley.EDU.m4 1076 cf/domain/s2k.m4 => cf/domain/S2K.Berkeley.EDU.m4 1077 cf/ostype/hpux.m4 => cf/ostype/hpux9.m4 1078 cf/ostype/ultrix4.1.m4 => cf/ostype/ultrix4.m4 1079 src/Makefile.* => src/Makefiles/Makefile.* 1080 src/Makefile.BSDI => src/Makefiles/Makefile.BSD-OS 1081 src/Makefile.DGUX => src/Makefiles/Makefile.dgux 1082 src/Makefile.SunOS.4.0.3 => src/Makefiles/Makefile.SunOS.4.0 1083 OBSOLETED FILES: 1084 cf/cf/cogsci.mc 1085 cf/cf/cs-exposed.mc 1086 cf/cf/cs-hidden.mc 1087 cf/cf/hpux-cs-hidden.mc 1088 cf/cf/knecht.mc 1089 cf/cf/osf1-cs-hidden.mc 1090 cf/cf/sunos3.5-cs-exposed.mc 1091 cf/cf/sunos3.5-cs-hidden.mc 1092 cf/cf/sunos4.1-cs-hidden.mc 1093 cf/cf/ultrix4.1-cs-hidden.mc 1094 cf/domain/cs-hidden.m4 1095 contrib/rcpt-streaming 1096 src/Makefiles/Makefile.SunOS.5.x 1097 10988.6.12/8.6.12 95/03/28 1099 Fix to IDENT code (it was getting the size of the reply buffer 1100 too small, so nothing was ever accepted). Fix from several 1101 people, including Allan Johannesen, Shane Castle of the 1102 Boulder County Information Services, and Jeff Smith of 1103 Warwick University (all arrived within a few hours of 1104 each other!). 1105 Fix a problem that could cause large jobs to run out of 1106 file descriptors on systems that use vfork() rather 1107 than fork(). 1108 11098.6.11/8.6.11 95/03/08 1110 The ``possible attack'' message would be logged more often 1111 than necessary if you are using Pine as a user agent. 1112 The wrong host would be reported in the ``possible attack'' 1113 message when attempted from IDENT. 1114 In some cases the syslog buffer could be overflowed when 1115 reporting the ``possible attack'' message. This can 1116 cause denial of service attacks. Truncate the message 1117 to 80 characters to prevent this problem. 1118 When reading the IDENT response a loop is needed around the 1119 read from the network to ensure that you don't get 1120 partial lines. 1121 Password entries without any shell listed (that is, a null 1122 shell) wouldn't match as "ok". Problem noted by 1123 Rob McMahon. 1124 When running BIND 4.9.x a problem could occur because the 1125 _res.options field is initialized differently than it 1126 was historically -- this requires that sendmail call 1127 res_init before it tweaks any bits. 1128 Fix an incompatibility in openxscript() between the file open mode 1129 and the stdio mode passed to fdopen. This caused UnixWare 1130 2.0 to have conniptions. Fix from Martin Sohnius of 1131 Novell Labs Europe. 1132 Fix problem with static linking of local getopt routine when 1133 using GNU's ld command. Fix from John Kennedy of 1134 Cal State Chico. 1135 It was possible to turn off privacy flags. Problem noted by 1136 *Hobbit*. 1137 Be more paranoid about writing files. Suggestions by *Hobbit* 1138 and Liudvikas Bukys. 1139 MAKEMAP: fixes for 64 bit machines (DEC Alphas in particular) 1140 from Spider Boardman. 1141 CONFIG: No changes (version number only, to keep it in sync 1142 with the binaries). 1143 11448.6.10/8.6.10 95/02/10 1145 SECURITY: Diagnose bogus values to some command line flags that 1146 could allow trash to get into headers and qf files. 1147 Validate the name of the user returned by the IDENT protocol. 1148 Some systems that really dislike IDENT send intentionally 1149 bogus information. Problem pointed out by Michael Bushnell 1150 of the Free Software Foundation. Has some security 1151 implications. 1152 Fix a problem causing error messages about DNS problems when 1153 the host name contained a percent sign to act oddly 1154 because it was passed as a printf-style format string. 1155 In some cases this could cause core dumps. 1156 Avoid possible buffer overrun in returntosender() if error 1157 message is quite ling. From Fletcher Mattox of the 1158 University of Texas. 1159 Fix a problem that would silently drop "too many hops" error 1160 messages if and only if you were sending to an alias. 1161 From Jon Giltner of the University of Colorado and 1162 Dan Harton of Oak Ridge National Laboratory. 1163 Fix a bug that caused core dumps on some systems if -d11.2 was 1164 set and e->e_message was null. Fix from Bruce Nagel of 1165 Data General. 1166 Fix problem that can still cause df files to be left around 1167 after "hop count exceeded" messages. Fix from Andrew 1168 Chang and Shau-Ping Lo of SunSoft. 1169 Fix a problem that can cause buffer overflows on very long 1170 user names (as might occur if you piped to a program 1171 with a lot of arguments). 1172 Avoid returning an error and re-queueing if the host signature 1173 is null; this can occur on addresses like ``user@.''. 1174 Problem noted by Wesley Craig and the University of 1175 Michigan. 1176 Avoid possible calls to malloc(0) if MCI caching is turned 1177 off. Bug fix from Pierre David of the Laboratoire 1178 Parallelisme, Reseaux, Systemes et Modelisation (PRiSM), 1179 Universite de Versailles - St Quentin, and Jacky 1180 Thibault. 1181 Make a local copy of the line being sent via senttolist() -- in 1182 some cases, buffers could get trashed by map lookups 1183 causing it to do unexpected things. This also simplifies 1184 some of the map code. 1185 CONFIG: No changes (version number only, to keep it in sync 1186 with the binaries). 1187 11888.6.9/8.6.9 94/04/19 1189 Do all mail delivery completely disconnected from any terminal. 1190 This provides consistency with daemon delivery and 1191 may have some security implications. 1192 Make sure that malloc doesn't get called with zero size, 1193 since that fails on some systems. Reported by Ed 1194 Hill of the University of Iowa. 1195 Fix multi-line values for $e (SMTP greeting message). Reported 1196 by Mike O'Connor of Ford Motor Company. 1197 Avoid syserr if no NIS domain name is defined, but the map it 1198 is trying to open is optional. From Win Bent of USC. 1199 Changes for picky compilers from Ed Gould of Digital Equipment. 1200 Hesiod support for UDB from Todd Miller of the University of 1201 Colorado. Use "hesiod" as the service name in the U 1202 option. 1203 Fix a problem that failed to set the "authentic" host name (that 1204 is, the one derived from the socket info) if you called 1205 sendmail -bs from inetd. Based on code contributed by 1206 Todd Miller (this problem was also reported by Guy Helmer 1207 of Dakota State University). This also fixes a related 1208 problem reported by Liudvikas Bukys of the University of 1209 Rochester. 1210 Parameterize "nroff -h" in all the Makefiles so people with 1211 variant versions can use them easily. Suggested by 1212 Peter Collinson of Hillside Systems. 1213 SMTP "MAIL" commands with multiple ESMTP parameters required two 1214 spaces between parameters instead of one. Reported by 1215 Valdis Kletnieks of Virginia Tech. 1216 Reduce the number of system calls during message collection by 1217 using global timeouts around the collect() loop. This 1218 code was contributed by Eric Wassenaar. 1219 If the initial hostname name gathering results in a name 1220 without a dot (usually caused by NIS misconfiguration) 1221 and BIND is compiled in, directly access DNS to get 1222 the canonical name. This should make life easier for 1223 Solaris systems. If it still can't be resolved, and 1224 if the name server is listed as "required", try again 1225 in 30 seconds. If that also fails, exit immediately to 1226 avoid bogus "config error: mail loops back to myself" 1227 messages. 1228 Improve the "MAIL DELETED BECAUSE OF LACK OF DISK SPACE" error 1229 message to explain how much space was available and 1230 sound a bit less threatening. Suggested by Stan Janet 1231 of the National Institute of Standards and Technology. 1232 If mail is delivered to an alias that has an owner, deliver any 1233 requested return-receipt immediately, and strip the 1234 Return-Receipt-To: header from the subsequent message. 1235 This prevents a certain class of denial of service 1236 attack, arguably gives more reasonable semantics, and 1237 moves things more towards what will probably become a 1238 network standard. Suggested by Christopher Davis of 1239 Kapor Enterprises. 1240 Add a "noreceipts" privacy flag to turn off all return receipts 1241 without recompiling. 1242 Avoid printing ESMTP parameters as part of the error message 1243 if there are errors during parsing. This change is 1244 purely cosmetic. 1245 Avoid sending out error messages during the collect phase of 1246 SMTP; there is an MVS mailer from UCLA that gets 1247 confused by this. Of course, I think it's their bug.... 1248 Check for the $j macro getting undefined, losing a dot, or getting 1249 lost from $=w in the daemon before accepting a connection; 1250 if it is, it dumps state, prints a LOG_ALERT message, 1251 and drops core for debugging. This is an attempt to 1252 track down a bug that I thought was long since gone. 1253 If you see this, please forward the log fragment to 1254 sendmail@CS.Berkeley.EDU. 1255 Change OLD_NEWDB from a #ifdef to a #if so it can be turned off 1256 with -DOLD_NEWDB=0 on the command line. From Christophe 1257 Wolfhugel. 1258 Instead of trying to truncate the listen queue for the server 1259 SMTP port when the load average is too high, just close 1260 the port completely and reopen it later as needed. 1261 This ensures that the other end gets a quick "connection 1262 refused" response, and that the connection can be 1263 recovered later. In particular, some socket emulations 1264 seem to get confused if you tweak the listen queue 1265 size around and can never start listening to connections 1266 again. The down side is that someone could start up 1267 another daemon process in the interim, so you could 1268 have multiple daemons all not listening to connections; 1269 this could in turn cause the sendmail.pid file to be 1270 incorrect. A better approach might be to accept the 1271 connection and give a 421 code, but that could break 1272 other mailers in mysterious ways and have paging behaviour 1273 implications. 1274 Fix a glitch in TCP-level debugging that caused flag 16.101 to 1275 set debugging on the wrong socket. From Eric Wassenaar. 1276 When creating a df* temporary file, be sure you truncate any 1277 existing data in the file -- otherwise system crashes 1278 and the like could result in extra data being sent. 1279 DOC: Replace the CHANGES-R5-R8 readme file with a paper in the 1280 doc directory. This includes some additional 1281 information. 1282 CONFIG: change UUCP rules to never add $U! or $k! on the front 1283 of recipient envelope addresses. This should have been 1284 handled by the $&h trick, but broke if people were 1285 mixing domainized and UUCP addresses. They should 1286 probably have converted all the way over to uucp-uudom 1287 instead of uucp-{new,old}, but the failure mode was to 1288 loop the mail, which was bad news. 1289 Portability fixes: 1290 Newer BSDI systems (several people). 1291 Older BSDI systems from Christophe Wolfhugel. 1292 Intergraph CLIX, from Paul Southworth of CICNet. 1293 UnixWare, from Evan Champion. 1294 NetBSD from Adam Glass. 1295 Solaris from Quentin Campbell of the University of 1296 Newcastle upon Tyne. 1297 IRIX from Dean Cookson and Bill Driscoll of Mitre 1298 Corporation. 1299 NCR 3000 from Kevin Darcy of Chrysler Financial Corporation. 1300 SunOS (it has setsid() and setvbuf() calls) from 1301 Jonathan Kamens of OpenVision Technologies. 1302 HP-UX from Tor Lillqvist. 1303 New Files: 1304 src/Makefile.CLIX 1305 src/Makefile.NCR3000 1306 doc/changes/Makefile 1307 doc/changes/changes.me 1308 doc/changes/changes.ps 1309 13108.6.8/8.6.6 94/03/21 1311 SECURITY: it was possible to read any file as root using the 1312 E (error message) option. Reported by Richard Jones; 1313 fixed by Michael Corrigan and Christophe Wolfhugel. 1314 13158.6.7/8.6.6 94/03/14 1316 SECURITY: it was possible to get root access by using wierd 1317 values to the -d flag. Thanks to Alain Durand of 1318 INRIA for forwarding me the notice from the bugtraq 1319 list. 1320 13218.6.6/8.6.6 94/03/13 1322 SECURITY: the ability to give files away on System V-based 1323 systems proved dangerous -- don't run as the owner 1324 of a :include: file on a system that allows giveaways. 1325 Unfortunately, this also applies to determining a 1326 valid shell. 1327 IMPORTANT: Previous versions weren't expiring old connections 1328 in the connection cache for a long time under some 1329 circumstances. This could result in resource exhaustion, 1330 both at your end and at the other end. This checks the 1331 connections for timeouts much more frequently. From 1332 Doug Anderson of NCSC. 1333 Fix a glitch that snuck in that caused programs to be run as 1334 the sender instead of the recipient if the mail was 1335 from a local user to another local user. From 1336 Motonori Nakamura of Kyoto University. 1337 Fix "wildcard" on /etc/shell matching -- instead of looking 1338 for "*", look for "/SENDMAIL/ANY/SHELL/". From 1339 Bryan Costales of ICSI. 1340 Change the method used to declare the "statfs" availability; 1341 instead of HASSTATFS and/or HASUSTAT with a ton of 1342 tweaking in conf.c, there is a single #define called 1343 SFS_TYPE which takes on one of six values (SFS_NONE 1344 for no statfs availability, SFS_USTAT for the ustat(2) 1345 syscall, SFS_4ARGS for a four argument statfs(2) call, 1346 and SFS_VFS, SFS_MOUNT, or SFS_STATFS for a two argument 1347 statfs(2) call with the declarations in <sys/vfs.h>, 1348 <sys/mount.h>, or <sys/statfs.h> respectively). 1349 Fix glitch in NetInfo support that could return garbage if 1350 there was no "/locations/sendmail" property. From 1351 David Meyer of the University of Virginia. 1352 Change HASFLOCK from defined/not-defined to a 0/1 definition 1353 to allow Linux to turn it off even though it is a 1354 BSD-like system. 1355 Allow setting of "ident" timeout to zero to turn off the ident 1356 protocol entirely. 1357 Make 7-bit stripping local to a connection (instead of to a 1358 mailer); this allows you to specify that SMTP is a 1359 7-bit channel, but revert to 8-bit should it advertise 1360 that it supports 8BITMIME. You still have to specify 1361 mailer flag 7 to get this stripping at all. 1362 Improve makesendmail script so it handles more cases automatically. 1363 Tighten up restrictions on taking ownership of :include: files 1364 to avoid problems on systems that allow you to give away 1365 files. 1366 Fix a problem that made it impossible to rebuild the alias 1367 file if it was on a read-only file system. From 1368 Harry Edmon of the University of Washington. 1369 Improve MX randomization function. From John Gardiner Myers 1370 of CMU. 1371 Fix a minor glitch causing a bogus message to be printed (used 1372 %s instead of %d in a printf string for the line number) 1373 when a bad queue file was read. From Harry Edmon. 1374 Allow $s to remain NULL on locally generated mail. I'm not 1375 sure this is necessary, but a lot of people have complained 1376 about it, and there is a legitimate question as to whether 1377 "localhost" is legal as an 822-style domain. 1378 Fix a problem with very short line lengths (mailer L= flag) in 1379 headers. This causes a leading space to be added onto 1380 continuation lines (including in the body!), and also 1381 tries to wrap headers containing addresses (From:, To:, 1382 etc) intelligently at the shorter line lengths. Problem 1383 Reported by Lars-Johan Liman of SUNET Operations Center. 1384 Log the real user name when logging syserrs, since these can have 1385 security implications. Suggested by several people. 1386 Fix address logging of cached connections -- it used to always 1387 log the numeric address as zero. This is a somewhat 1388 bogus implementation in that it does an extra system 1389 call, but it should be an inexpensive one. Fix from 1390 Motonori Nakamura. 1391 Tighten up handling of short syslog buffers even more -- there 1392 were cases where the outgoing relay= name was too long 1393 to share a line with delay= and mailer= logging. 1394 Limit the overhead on split envelopes to one open file descriptor 1395 per envelope -- previously the overhead was three 1396 descriptors. This was in response to a problem reported 1397 by P{r (Pell) Emanuelsson. 1398 Fixes to better handle the case of unexpected connection closes; 1399 this redirects the output to the transcript so the info 1400 is not lost. From Eric Wassenaar. 1401 Fix potential string overrun if you macro evaluate a string that 1402 has a naked $ at the end. Problem noted by James Matheson 1403 <jmrm@eng.cam.ac.uk>. 1404 Make default error number on $#error messages 553 (``Requested 1405 action not taken: mailbox name not allowed'') instead of 1406 501 (``Syntax error in parameters or arguments'') to 1407 avoid bogus "protocol error" messages. 1408 Strip off any existing trailing dot on names during $[ ... $] 1409 lookup. This prevents it from ending up with two dots 1410 on the end of dot terminated names. From Wesley Craig 1411 of the University of Michigan and Bryan Costales of ICSI. 1412 Clean up file class reading so that the debugging information is 1413 more informative. It hadn't been using setclass, so you 1414 didn't see the class items being added. 1415 Avoid core dump if you are running a version of sendmail where 1416 NIS is compiled in, and you specify an NIS map, but 1417 NIS is not running. Fix from John Oleynick of 1418 Rutgers. 1419 Diagnose bizarre case where res_search returns a failure value, 1420 but sets h_errno to a success value. 1421 Make sure that "too many hops" messages are considered important 1422 enough to send an error to the Postmaster (that is, the 1423 address specified in the P option). This fix should 1424 help problems that cause the df file to be left around 1425 sometimes -- unfortunately, I can't seem to reproduce 1426 the problem myself. 1427 Avoid core dump (null pointer reference) on EXPN command; this 1428 only occurred if your log level was set to 10 or higher 1429 and the target account was an alias or had a .forward file. 1430 Problem noted by Janne Himanka. 1431 Avoid "denial of service" attacks by someone who is flooding your 1432 SMTP port with bad commands by shutting the connection 1433 after 25 bad commands are issued. From Kyle Jones of 1434 UUNET. 1435 Fix core dump on error messages with very long "to" buffers; 1436 fmtmsg overflows the message buffer. Fixed by trimming 1437 the to address to 203 characters. Problem reported by 1438 John Oleynick. 1439 Fix configuration for HASFLOCK -- there were some spots where 1440 a #ifndef was incorrectly #ifdef. Pointed out by 1441 George Baltz of the University of Maryland. 1442 Fix a typo in savemail() that could cause the error message To: 1443 lists to be incorrect in some places. From Motonori 1444 Nakamura. 1445 Fix a glitch that can cause duplicate error messages on split 1446 envelopes where an address on one of the lists has a 1447 name server failure. Fix from Voradesh Yenbut of the 1448 University of Washington. 1449 Fix possible bogus pointer reference on ESMTP parameters that 1450 don't have an ``=value'' part. 1451 CNAME loops caused an error message to be generated, but also 1452 re-queued the message. Changed to just re-queue the 1453 message (it's really hard to just bounce it because 1454 of the wierd way the name server works in the presence 1455 of CNAME loops). Problem noted by James M.R.Matheson 1456 of Cambridge University. 1457 Avoid giving ``warning: foo owned process doing -bs'' messages 1458 if they use ``MAIL FROM:<foo>'' where foo is their true 1459 user name. Suggested by Andreas Stolcke of ICSI. 1460 Change the NAMED_BIND compile flag to be a 0/1 flag so you can 1461 override it easily in the Makefile -- that is, you can 1462 turn it off using -DNAMED_BIND=0. 1463 If a gethostbyname(...) of an address with a trailing dot fails, 1464 try it without the trailing dot. This is because if 1465 you have a version of gethostbyname() that falls back 1466 to NIS or the /etc/hosts file it will fail to find 1467 perfectly reasonable names that just don't happen to 1468 be dot terminated in the hosts file. You don't want to 1469 strip the dot first though because we're trying to ensure 1470 that country names that match one of your subdomains get 1471 a chance. 1472 PRALIASES: fix bogus output on non-null-terminated strings. 1473 From Bill Gianopoulos of Raytheon. 1474 CONFIG: Avoid rewriting anything that matches $w to be $j. 1475 This was in code intended to only catch the self-literal 1476 address (that is, [1.2.3.4], where 1.2.3.4 is your 1477 IP address), but the code was broken. However, it will 1478 still do this if $M is defined; this is necessary to 1479 get client configurations to work (sigh). Note that this 1480 means that $M overrides :mailname entries in the user 1481 database! Problem noted by Paul Southworth. 1482 CONFIG: Fix definition of Solaris help file location. From 1483 Steve Cliffe <steve@gorgon.cs.uow.edu.au>. 1484 CONFIG: Fix bug that broke news.group.USENET mappings. 1485 CONFIG: Allow declaration of SMTP_MAILER_MAX, FAX_MAILER_MAX, 1486 and USENET_MAILER_MAX to tweak the maximum message 1487 size for various mailers. 1488 CONFIG: Change definition of USENET_MAILER_ARGS to include argv[0] 1489 instead of assuming that it is "inews" for consistency 1490 with other mailers. From Michael Corrigan of UC San Diego. 1491 CONFIG: When mail is forwarded to a LOCAL_RELAY or a MAIL_HUB, 1492 qualify the address in the SMTP envelope as user@{relay|hub} 1493 instead of user@$j. From Bill Wisner of The Well. 1494 CONFIG: Fix route-addr syntax in nullrelay configuration set. 1495 CONFIG: Don't turn off case mapping of user names in the local 1496 mailer for IRIX. This was different than most every other 1497 system. 1498 CONFIG: Avoid infinite loops on certainly list:; syntaxes in 1499 envelope. Noted by Thierry Besancon 1500 <besancon@excalibur.ens.fr>. 1501 CONFIG: Don't include -z by default on uux line -- most systems 1502 don't want it set by default. Pointed out by Philippe 1503 Michel of Thomson CSF. 1504 CONFIG: Fix some bugs with mailertables -- for example, if your 1505 host name was foo.bar.ray.com and you matched against 1506 ".ray.com", the old implementation bound %1 to "bar" 1507 instead of "foo.bar". Also, allow "." in the mailertable 1508 to match anything -- essentially, take over SMART_HOST. 1509 This also moves matching of explicit local host names 1510 before the mailertable so they don't have to be special 1511 cased in the mailertable data. Reported by Bill 1512 Gianopoulos of Raytheon; the fix for the %1 binding 1513 problem was contributed by Nicholas Comanos of the 1514 University of Sydney. 1515 CONFIG: Don't include "root" in class $=L (users to deliver 1516 locally, even if a hub or relay exists) by default. 1517 This is because of the known bug where definition of 1518 both a LOCAL_RELAY and a MAIL_HUB causes $=L to ignore 1519 both and deliver into the local mailbox. 1520 CONFIG: Move up bitdomain and uudomain handling so that they 1521 are done before .UUCP class matching; uudomain was 1522 reported as ineffective before. This also frees up 1523 diversion 8 for future use. Problem reported by Kimmo 1524 Suominen. 1525 CONFIG: Don't try to convert dotted IP address (e.g., [1.2.3.4]) 1526 into host names. As pointed out by Jonathan Kamens, 1527 these are often used because either the forward or reverse 1528 mapping is broken; this translation makes it broken again. 1529 DOC: Clarify $@ and $: in the Install & Op Guide. From Kimmo 1530 Suominen. 1531 Portability fixes: 1532 Unicos from David L. Kensiski of Sterling Sofware. 1533 DomainOS from Don Lewis of Silicon Systems. 1534 GNU m4 1.0.3 from Karst Koymans of Utrecht University. 1535 Convex from Kimmo Suominen <kim@tac.nyc.ny.us>. 1536 NetBSD from Adam Glass <glass@sun-lamp.cs.berkeley.edu>. 1537 BSD/386 from Tony Sanders of BSDI. 1538 Apollo from Eric Wassenaar. 1539 DGUX from Doug Anderson. 1540 Sequent DYNIX/ptx 2.0 from Tim Wright of Sequent. 1541 NEW FILES: 1542 src/Makefile.DomainOS 1543 src/Makefile.PTX 1544 src/Makefile.SunOS.5.1 1545 src/Makefile.SunOS.5.2 1546 src/Makefile.SunOS.5.x 1547 src/mailq.1 1548 cf/ostype/domainos.m4 1549 doc/op/Makefile 1550 doc/intro/Makefile 1551 doc/usenix/Makefile 1552 15538.6.5/8.6.5 94/01/13 1554 Security fix: /.forward could be owned by anyone (the test 1555 to allow root to own any file was backwards). From 1556 Bob Campbell at U.C. Berkeley. 1557 Security fix: group ids were not completely set when programs 1558 were invoked. This caused programs to have group 1559 permissions they should not have had (usually group 1560 daemon instead of their own group). In particular, 1561 Perl scripts would refuse to run. 1562 Security: check to make sure files that are written are not 1563 symbolic links (at least under some circumstances). 1564 Although this does not respond to a specific known 1565 attack, it's just a good idea. Suggested by 1566 Christian Wettergren. 1567 Security fix: if a user had an NFS mounted home directory on 1568 a system with a restricted shell listed in their 1569 /etc/passwd entry, they could still execute any 1570 program by putting that in their .forward file. 1571 This fix prevents that by insisting that their shell 1572 appear in /etc/shells before allowing a .forward to 1573 execute a program or write a file. You can disable 1574 this by putting "*" in /etc/shells. It also won't 1575 permit world-writable :include: files to reference 1576 programs or files (there's no way to disable this). 1577 These behaviours are only one level deep -- for 1578 example, it is legal for a world-writable :include: 1579 file to reference an alias that writes a file, on 1580 the assumption that the alias file is well controlled. 1581 Security fix: root was not treated suspiciously enough when 1582 looking into subdirectories. This would potentially 1583 allow a cracker to examine files that were publically 1584 readable but in a non-publically searchable directory. 1585 Fix a problem that causes an error on QUIT on a cached 1586 connection to create problems on the current job. 1587 These are typically unrelated, so errors occur in 1588 the wrong place. 1589 Reset CurrentLA in sendall() -- this makes sendmail queue 1590 runs more responsive to load average, and fixes a 1591 problem that ignored the load average in locally 1592 generated mail. From Eric Wassenaar. 1593 Fix possible core dump on aliases with null LHS. From 1594 John Orthoefer of BB&N. 1595 Revert to using flock() whenever possible -- there are just 1596 too many bugs in fcntl() locking, particularly over 1597 NFS, that cause sendmail to fail in perverse ways. 1598 Fix a bug that causes the connection cache to get confused 1599 when sending error messages. This resulted in 1600 "unexpected close" messages. It should fix itself 1601 on the following queue run. Problem noted by 1602 Liudvikas Bukys of the University of Rochester. 1603 Include $k in $=k as documented in the Install & Op Guide. 1604 This seems odd, but it was documented.... From 1605 Michael Corrigan of UCSD. 1606 Fix problem that caused :include:s from alias files to be 1607 forced to be owned by root instead of daemon 1608 (actually DefUid). From Tim Irvin. 1609 Diagnose unrecognized I option values -- from Mortin Forssen 1610 of the Chalmers University of Technology. 1611 Make "error" mailer work consistently when there is no error 1612 code associated with it -- previously it returned OK 1613 even though there was a real problem. Now it assumes 1614 EX_UNAVAILABLE. 1615 Fix bug that caused the last header line of messages that had 1616 no body and which were terminated with EOF instead of 1617 "." to be discarded. Problem noted by Liudvikas Bukys. 1618 Fix core dump on SMTP mail to programs that failed -- it tried 1619 to go to a "next MX host" when none existed, causing 1620 a core dump. From der Mouse at McGill University. 1621 Change IDENTPROTO from a defined/not defined to a 0/1 switch; 1622 this makes it easier to turn it off (using 1623 -DIDENTPROTO=0 in the Makefile). From der Mouse. 1624 Fix YP_MASTER_NAME store to use the unupdated result of 1625 gethostname() (instead of myhostname(), which tries 1626 to fully qualify the name) to be consistent with 1627 SunOS. If your hostname is unqualified, this fixes 1628 transfers to slave servers. Bug noted by Keith 1629 McMillan of Ameritech Services, Inc. 1630 Fix Ultrix problem: gethostbyname() can return a very large 1631 (> 500) h_length field, which causes the sockaddr 1632 to be trashed. Use the size of the sockaddr instead. 1633 Fix from Bob Manson of Ohio State. 1634 Don't assume "-a." on host lookups if NAMED_BIND is not 1635 defined -- this confuses gethostbyname on hosts 1636 file lookups, which doesn't understand the trailing 1637 dot convention. 1638 Log SMTP server subprocesses that die with a signal instead 1639 of from a clean exit. 1640 If you don't have option "I" set, don't assume that a DNS 1641 "host unknown" message is authoritative -- it 1642 might still be found in /etc/hosts. 1643 Fix a problem that would cause Deferred: messages to be sent 1644 as the subject of an error message, even though the 1645 actual cause of a message was more severe than that. 1646 Problem noted by Chris Seabrook of OSSI. 1647 Fix race condition in DBM alias file locking. From Kyle 1648 Jones of UUNET. 1649 Limit delivery syslog line length to avoid bugs in some 1650 versions of syslog(3). This adds a new compile time 1651 variable SYSLOG_BUFSIZE. From Jay Plett of Princeton 1652 University, which is in turn derived from IDA. 1653 Fix quotes inside of comments in addresses -- previously 1654 it insisted that they be balanced, but the 822 spec 1655 says that they should be ignored. 1656 Dump open file state to syslog upon receiving SIGUSR1 (for 1657 debugging). This also evaluates ruleset 89, if set 1658 (with the null input), and logs the result. This 1659 should be used sparingly, since the rewrite process 1660 is not reentrant. 1661 Change -qI, -qR, and -qS flags to be case-insensitive as 1662 documented in the Bat Book. 1663 If the mailer returned EX_IOERR or EX_OSERR, sendmail did not 1664 return an error message and did not requeue the message. 1665 Fix based on code from Roland Dirlewanger of 1666 Reseau Regional Aquarel, Bordeaux, France. 1667 Fix a problem that caused a seg fault if you got a 421 error 1668 code during some parts of connection initialization. 1669 I've only seen this when talking to buggy mailers on 1670 the other end, but it shouldn't give a seg fault in 1671 any case. From Amir Plivatsky. 1672 Fix core dump caused by a ruleset call that returns null. 1673 Fix from Bryan Costales of ICSI. 1674 Full-Name: field was being ignored. Fix from Motonori Nakamura 1675 of Kyoto University. 1676 Fix a possible problem with very long input lines in setproctitle. 1677 From P{r Emanuelsson. 1678 Avoid putting "This is a warning message" out on return receipts. 1679 Suggested by Douglas Anderson. 1680 Detect loops caused by recursive ruleset calls. Suggested by 1681 Bryan Costales. 1682 Initialize non-alias maps during alias rebuilds -- they may be 1683 needed for parsing. Problem noted by Douglas Anderson. 1684 Log sender address even if no message was collected in SMTP 1685 (e.g., if all RCPTs failed). Suggested by Motonori 1686 Nakamura. 1687 Don't reflect the owner-list contents into the envelope sender 1688 address if the value contains ", :, /, or | (to avoid 1689 illegal addresses appearing there). 1690 Efficiency hack for toktype macro -- from Craig Partridge of 1691 BB&N. 1692 Clean up DNS error printing so that a host name is always 1693 included. 1694 Remember to set $i during queue runs. Reported by Stephen 1695 Campbell of Dartmouth University. 1696 If ${HOSTALIASES} is set, use it during canonification so that 1697 headers are properly mapped. Reported by Anne Bennett 1698 of Concordia University. 1699 Avoid printing misleading error message if SMTP mailer (not 1700 using [IPC]) should die on a core dump. 1701 Avoid incorrect diagnosis of "file 1 closed" when it is caused 1702 by the other end closing the connection. From 1703 Dave Morrison of Oracle. 1704 Improve several of the error messages printed by "mailq" 1705 to include a host name or other useful information. 1706 Add NetInfo preliminary support for NeXT systems. From Vince 1707 DeMarco. 1708 Fix a glitch that sometimes caused :include:s that pointed to 1709 NFS filesystems that were down to give an "aliasing/ 1710 forwarding loop broken" message instead of queueing 1711 the message for retry. Noted by William C Fenner of 1712 the NRL Connection Machine Facility. 1713 Fix a problem that could cause a core dump if the input sequence 1714 had (or somehow acquired) a \231 character. 1715 Make sure that route-addrs always have <angle brackets> around 1716 them in non-SMTP envelopes (SMTP envelopes already do 1717 this properly). 1718 Avoid wierd headers on unbalanced punctuation of the form: 1719 ``Joe User <user)'' -- this caused reference to the 1720 null macro. Fix from Rick McCarty of IO.COM. 1721 Fix a problem that caused an alias "user: user@local.host" to 1722 not have the QNOTREMOTE bit set; this caused configs 1723 to act as if FEATURE(notsticky) was defined even when 1724 it was not. The effect of the problem was to make it 1725 very hard to to set up satellite sites that had a few 1726 local accounts, with everything else forwarded to a 1727 corporate hub. Reported by Detlef Drewanz of the 1728 University of Rostock and Mark Frost of NCD. 1729 Change queuing to not call rulesets 3, {1 or 2}, 4 on header 1730 addresses. This is more efficient (fewer name server 1731 calls) and fixes certain unusual configurations, such 1732 as those that have ruleset 4 do something that is 1733 non-idempotent unless a mailer-specific ruleset did 1734 something else. Problem reported by Brian J. Coan 1735 of the Institute for Global Communications. 1736 Fix the "obsolete argument" routine in main to better understand 1737 new arguments. For example, if you used ``sendmail 1738 -C config -v -q'' it would choke on the -q because 1739 the -C would stop looking for old-format arguments. 1740 Fix the code that was intended to allow two users to forward their 1741 mail to the same program and have them appear unique. 1742 Portability fixes for: 1743 SCO UNIX from Murray Kucherawy. 1744 SCO Open Server 3.2v4 from Philippe Brand. 1745 System V Release 4 from Rick Ellis and others. 1746 OSF/1 from Steve Campbell. 1747 DG/UX from Ben Mesander of the USGS and Bryan Curnutt 1748 of Stoner Associates. 1749 Motorola SysV88 from Kevin Johnson of Motorola. 1750 Solaris 2.3 from Casper H.S. Dik of the University 1751 of Amsterdam and John Caruso of University 1752 of Maryland. 1753 FreeBSD from Ollivier Robert. 1754 NetBSD from Adam Glass. 1755 TitanOS from Kate Hedstrom of Rutgers University. 1756 Irix from Bryan Curnutt. 1757 Dynix from Jim Davis of the University of Arizona. 1758 RISC/os. 1759 Linux from John Kennedy of California State University 1760 at Chico. 1761 Solaris 2.x from Tony Boner of the U.S. Air Force. 1762 NEXTSTEP 3.x from Vince DeMarco. 1763 HP-UX from various people. NOTA BENE: the location 1764 of the config file has moved to /usr/lib 1765 to match the HP-UX version of sendmail. 1766 CONFIG: Don't do any recipient rewriting on relay mailer; 1767 since this is intended only for internal use, the 1768 usual RFC 821/822/1123 rules can be relaxed. The 1769 main point of this is to avoid munging (ugh) UUCP 1770 addresses when relaying internally. 1771 CONFIG: fix typo in mailer/uucp.m4 that mutilates list:; 1772 syntax addresses delivered via UUCP. Solution 1773 provided by Peter Wemm. 1774 CONFIG: fix thumb-fumble in default UUCP relaying in ruleset 1775 zero; it caused double @ signs in addresses. From 1776 Irving Reid of the University of Toronto. 1777 CONFIG: Portability fixes for SCO Unix 3.2 with TCP/IP 1.2.1 1778 from Markku Toijala of ICL Personal Systems Oy. 1779 CONFIG: Add trailing "." on pseudo-domains for consistency; 1780 this fixes a problem (noted by Al Whaley of Sunnyside) 1781 that made it hard to recognize your own pseudodomain 1782 names. 1783 CONFIG: catch "@host" syntax errors (i.e., null local-parts) 1784 rather than letting them get "local configuration 1785 error"s. Problem noted by John Gardiner Myers. 1786 CONFIG: add uucp-uudom mailer variant, based on code posted 1787 by Spider Boardman <spider@Orb.Nashua.NH.US>; this 1788 has uucp-dom semantics but old UUCP syntax. This 1789 also permits "uucp-old" as an alias for "uucp" and 1790 "uucp-new" as a synonym for "suucp" for consistency. 1791 CONFIG: add POP mailer support (from Kimmo Suominen 1792 <kim@grendel.lut.fi>). 1793 CONFIG: drop CSNET_RELAY support -- CSNET is long gone. 1794 CONFIG: fix bug caused with domain literal addresses (e.g., 1795 ``[128.32.131.12]'') when FEATURE(allmasquerade) 1796 was set; it would get an additional @masquerade.host 1797 added to the address. Problem noted by Peter Wan 1798 of Georgia Tech. 1799 CONFIG: make sure that the local UUCP name is in $=w. From 1800 Jim Murray of Stratus. 1801 CONFIG: changes to UUCP rewriting to simulate IDA-style "V" 1802 mailer flag. Briefly, if you are sending to host 1803 "foo", then it rewrites "foo!...!baz" to "...!baz", 1804 "foo!baz" remains "foo!baz", and anything else has 1805 the local name prepended. 1806 CONFIG: portability fixes for HP-UX. 1807 DOC: several minor problems fixed in the Install & Op Guide. 1808 MAKEMAP: fix core dump problem on lines that are too long or 1809 which lack newline. From Mark Delany. 1810 MAILSTATS: print sums of columns (total messages & kbytes 1811 in and out of the system). From Tom Ferrin of UC 1812 San Francisco Computer Graphics Lab. 1813 SIGNIFICANT USER- OR SYSAD-VISIBLE CHANGES: 1814 On HP-UX, /etc/sendmail.cf has been moved to 1815 /usr/lib/sendmail.cf to match HP sendmail. 1816 Permissions have been tightened up on world-writable 1817 :include: files and accounts that have shells 1818 that are not listed in /etc/shells. This may 1819 cause some .forward files that have worked 1820 before to start failing. 1821 SIGUSR1 dumps some state to the log. 1822 NEW FILES: 1823 src/Makefile.DGUX 1824 src/Makefile.Dynix 1825 src/Makefile.FreeBSD 1826 src/Makefile.Mach386 1827 src/Makefile.NetBSD 1828 src/Makefile.RISCos 1829 src/Makefile.SCO 1830 src/Makefile.SVR4 1831 src/Makefile.Titan 1832 cf/mailer/pop.m4 1833 cf/ostype/bsdi1.0.m4 1834 cf/ostype/dgux.m4 1835 cf/ostype/dynix3.2.m4 1836 cf/ostype/sco3.2.m4 1837 makemap/Makefile.dist 1838 praliases/Makefile.dist 1839 18408.6.4/8.6.4 93/10/31 1841 Repair core-dump problem (write to read-only memory segment) 1842 if you fall back to the return-to-Postmaster case in 1843 savemail. Problem reported by Richard Liu. 1844 Immediately diagnose bogus sender addresses in SMTP. This 1845 makes quite certain that crackers can't use this 1846 class of attack. 1847 Reliability Fix: check return value from fclose() and fsync() 1848 in a few critical places. 1849 Minor problem in initsys() that reversed a condition for 1850 redirecting the output channel on queue runs. It's 1851 not clear this code even does anything. From Eric 1852 Wassenaar of the Dutch National Institute for Nuclear 1853 and High-Energy Physics. 1854 Fix some problems that caused queue runs to do "too much work", 1855 such as double-reading the Errors-To: header. From 1856 Eric Wassenaar. 1857 Error messages on writing the temporary file (including the 1858 data file) were getting suppressed in SMTP -- this 1859 fix causes them to be properly reported. From Eric 1860 Wassenaar. 1861 Some changes to support AF_UNIX sockets -- this will only 1862 really become relevant in the next release, but some 1863 people need it for local patches. From Michael 1864 Corrigan of UC San Diego. 1865 Use dynamically allocated memory (instead of static buffers) 1866 for macros defined in initsys() and settime(); since 1867 these can have different values depending on which 1868 envelope they are in. From Eric Wassenaar. 1869 Improve logging to show ctladdr on to= logging; this tells you 1870 what uid/gid processes ran as. 1871 Fix a problem that caused error messages to be discarded if 1872 the sender address was unparseable for some reason; 1873 this was supposed to fall back to the "return to 1874 postmaster" case. 1875 Improve aliaswait backoff algorithm. 1876 Portability patches for Linux (8.6.3 required another header 1877 file) (from Karl London) and SCO UNIX. 1878 CONFIG: patch prog mailer to not strip host name off of envelope 1879 addresses (so that it matches local again). From 1880 Christopher Davis. 1881 CONFIG: change uucp-dom mailer so that "<>" translates to $n; 1882 this prevents uux from seeing lines with null names like 1883 ``From Sat Oct 30 14:55:31 1993''. From Motonori 1884 Nakamura of Kyoto University. 1885 CONFIG: handle <list:;> syntax correctly. This isn't legal, but 1886 it shouldn't fail miserably. From Motonori Nakamura. 1887 18888.6.3/8.6.3 93/10/24 1889 IMPORTANT FIX: Fix several problems that caused open files to 1890 be "lost" during queue runs; this overflowed the open 1891 file table on large runs. An assumption that fdopen 1892 always succeeds sometimes resulted in core dumps when 1893 this happens; sometimes the message is delivered twice, 1894 sometimes (probably) infinite times. This problem in 1895 various form was reported by P{r (Pell) Emanuelsson and 1896 Robert Campbell of U.C. Berkeley. 1897 Special diagnosis of EMFILE error conditions -- it now prints 1898 the known open file descriptors so you can figure out 1899 what is consuming so much resources. 1900 Fix a couple of problems caused by early address parsing 1901 errors -- one caused it to return a "this is only a 1902 warning" when it really wasn't, and the other started 1903 parsing through a random pointer. The first was 1904 noted by Eric Wassenaar. 1905 Fix an infinite loop problem caused by null components in the 1906 host signature. Problem noted by Jan Sorensen. 1907 Be sure to reset the "current date" when sending an error 1908 message -- PostMasterCopy messages were being sent 1909 with an old Date: header. 1910 Fix a problem that caused duplicated mail when sendmail was 1911 (1) compiled without HASFLOCK, (2) you are sending to 1912 an alias that has an owner-* alias, (3) you execute 1913 sendmail with -t flag, (4) you run in -odb mode, and 1914 (5) the sender specifies both the alias name and 1915 another alias [i.e., the envelope is split], then 1916 duplicate messages are sent. The problem description 1917 and one-line fix are from Motonori Nakamura of Kyoto 1918 University. 1919 Avoid a problem that causes error messages to be discarded 1920 in some cases -- this was the result of a "fix" to 1921 avoid duplicate error messages, but two are better 1922 than zero. Reported by Tim Rylance. 1923 Fix a minor botch in checkfd012() -- fix from Dave Hill of 1924 Computervision R&D Ltd. 1925 Remove "X-Authentication-Warning: <user> set sender to <address> 1926 using -f" entirely -- it is far too eager to include 1927 this, and it is confusing folks. I'll try to make it 1928 work "right" in 8.7. Problem noted by Yoshitaka 1929 Tokugawa of dit Co., Ltd. 1930 Fix a race condition with the errno value in tick() and 1931 reapchild() -- this caused occasional misdiagnosis 1932 of problems. Kyle Jones of UUNET helped this along. 1933 Repair rule loop-detection code. From Michael Corrigan of 1934 U.C. San Diego. 1935 Fix a problem that caused sender domain addition (C mailer 1936 flag to be ignored if you use -odq or use -odb with 1937 a high load average. Problem reported by Jim Murray 1938 of Stratus. 1939 Fix ident protocol on multi-homed machines. It was not 1940 always using the correct interface. Fix from J.R. 1941 Oldroyd of Opal. 1942 Previously, sendmail assumed that any SMTP greeting message 1943 that wasn't 2xx was a temporary failure -- it should 1944 only take 4xx as a temporary failure, and return a 1945 solid error message on anything else -- for example, 1946 to allow you to reject connections on a workstation 1947 that is MXed to a mail server. 1948 Portability enhancements for 386BSD/FreeBSD/NetBSD from 1949 Ollivier Robert. 1950 CONFIG: FEATURE(always_add_domain) didn't always add the domain; 1951 in particular, on local mail it modified the header sender 1952 but not the header recipient address(es). Reported by 1953 Jeffrey Honig of Cornell University. Also, strip 1954 any host from envelope recipient address(es), since 1955 local mailers don't understand host names -- this is 1956 to help mailertable entries. From Christopher Davis. 1957 CONFIG: masquerading didn't apply to addresses that already 1958 had a domain. This change replaces a local hostname 1959 by the masquerade name in the SMTP mailer (previously 1960 it only added the masquerade name if it didn't already 1961 have a domain name). Several people complained about 1962 this. 1963 19648.6.2/8.6.2 93/10/15 1965 Put a "successful delivery" message in the transcript for 1966 addresses that get return-receipts. 1967 Put a prominent "this is only a warning" message in warning 1968 messages -- some people don't read carefully enough 1969 and end up sending the message several times. 1970 Include reason for temporary failure in the "warning" return 1971 message. Currently, it just says "cannot send for 1972 four hours". 1973 Fix the "Original message received" time generated for 1974 returntosender messages. It was previously listed as 1975 the current time. Bug reported by Eric Hagberg of 1976 Cornell University Medical College. 1977 If there is an error when writing the body of a message, 1978 don't send the trailing dot and wait for a response 1979 in sender SMTP, as this could cause the connection to 1980 hang up under some bizarre circumstances. From Eric 1981 Wassenaar. 1982 Fix some server SMTP synchronization problems caused when 1983 connections fail during message collection. From 1984 Eric Wassenaar. 1985 Fix a problem that can cause srvrsmtp to reject mail if the 1986 name server is down -- it accepts the RCPT but rejects 1987 the DATA command. Problem reported by Jim Murray of 1988 Stratus. 1989 Fix a problem that can cause core dumps if the config file 1990 incorrectly resolves to a null hostname. Reported by 1991 Allan Johannesen of WPI. 1992 Non-root use of -C flag, dangerous -f flags, and use of -oQ 1993 by non-root users were not put into 1994 X-Authentication-Warning:s as intended because the 1995 config file hadn't set the PrivacyFlags yet. Fix 1996 from Sven-Ove Westberg of the University of Lulea. 1997 Under very odd circumstances, the alias file rebuild code 1998 could get confused as to whether a database was 1999 open or not. 2000 Check "vendor code" on the end of V lines -- this is 2001 intended to provide a hook for vendor-specific 2002 configuration syntax. (This is a "new feature", 2003 but I've made an exception to my rule in a belief 2004 that this is a highly exceptional case.) 2005 Portability fixes for DG/UX (from Douglas Anderson of NCSC), 2006 SCO Unix (from Murray Kucherawy), A/UX, and OSF/1 2007 (from Jon Forrest of UC Berkeley) 2008 CONFIG: fix ``mailer:host'' form of UUCP relay naming. 2009 20108.6.1/8.6 93/10/08 2011 Portability fixes for A/UX and Encore UMAX V. 2012 Fix error message handling -- if you had a name server down 2013 causing an error during parsing, that message was never 2014 propogated to the queue file. 2015 20168.6/8.6 93/10/05 2017 Configuration cleanup: make it easier to undo IDENTPROTO in 2018 conf.h (other systems have the same bug). 2019 If HASGETDTABLESIZE and _SC_OPEN_MAX are both defined, assume 2020 getdtablesize() instead of sysconf(); a disturbingly 2021 large number of systems defined _SC_OPEN_MAX in the 2022 header files but don't have the syscall. 2023 Another patch to really truly ignore MX records in getcanonname 2024 if trymx == FALSE. 2025 Fix problem that caused the "250 IAA25499 Message accepted for 2026 delivery" message to be omitted if there was an error 2027 in the header of the message (e.g., a bad Errors-To: 2028 line). Pointed out by Michael Corrigan of UCSD. 2029 Announce name of host we are chatting when we get errors; this 2030 is an IDA-ism suggested by Christophe Wolfhugel. 2031 Portability fixes for Alpha OSF/1 (from Anthony Baxter of the 2032 Australian Artificial Intelligence Institute), SCO Unix 2033 (from Murray Kucherawy of Hookup Communication Corp.), 2034 NeXT (from Vince DeMarco and myself), Linux (from 2035 Karl London <karl@borg.demon.co.uk>), BSDI (from 2036 Christophe Wolfhugel, and SVR4 on Dell (from Kimmo 2037 Suominen), AUX 3.0 on Macintosh, and ANSI C compilers. 2038 Some changes to get around gcc optimizer bugs. From Takahiro 2039 Kanbe. 2040 Fix error recovery in queueup if another tf file of the same 2041 name already exists. Problem stumbled over by Bill 2042 Wisner of The Well. 2043 Output YP_MASTER_NAME and YP_LAST_MODIFIED without null bytes. 2044 Problem noted by Keith McMillan of Ameritech Services. 2045 Deal with group permissions properly when opening .forward and 2046 :include: files. This relaxes the 8.1C restrictions 2047 slightly more. This includes proper setting of groups 2048 when reading :include: files, allowing you to read some 2049 files that you should be able to read but have previously 2050 been denied unless you owned them or they had "other" 2051 read permission. 2052 Make certain that $j is in $=w (after the .cf is read) so that 2053 if the user is forced to override some silly system, 2054 MX suppression will still work. 2055 Fix a couple of efficiency problems where newstr was double- 2056 calling expensive routines. In at least one case, it 2057 wasn't guaranteed that they would always return the 2058 same result. Problem noted by Christophe Wolfhugel. 2059 Fix null pointer dereference in putoutmsg -- only on an error 2060 condition from a non-SMTP mailer. From Motonori 2061 Nakamura. 2062 Macro expand "C" line class definitions before scanning so that 2063 "CX $Z" works. 2064 Fix problem that caused error message to be sent while still 2065 trying to send the original message if the connection 2066 is closed during a DATA command after getting an error 2067 on an RCPT command (pretty obscure). Problem reported 2068 by John Myers of CMU. 2069 Fix reply to NOOP to be 250 instead of 200 -- this is a long 2070 term bug. 2071 Fix a nasty bug causing core dumps when returning the "warning: 2072 cannot deliver for N hours -- will keep trying" message; 2073 it only occurred if you had PostMasterCopy set and 2074 only on some architectures. Although sendmail would 2075 keep trying, it would send error messages on each 2076 queue interval. This is an important fix. 2077 Allow u and g options to take user and group names respectively. 2078 Don't do a chdir into the queue directory in -bt mode to make 2079 ruleset testing a bit easier. 2080 Don't allow users to turn off logging (using -oL) on the command 2081 line -- command line can only raise, not lower, logging 2082 level. 2083 Set $u to the original recipient on the SMTP transaction or on 2084 the command line. This is only done if there is exactly 2085 one recipient. Technically, this does not meet the 2086 specs, because it does not guarantee a domain on the 2087 address. 2088 Fix a problem that dumped error messages on bad addresses if 2089 you used the -t flag. Problem noted by Josh Smith of 2090 Harvey Mudd College. 2091 Given an address such as ``<foo> <bar>'', auto-quote the first 2092 ``<foo>'' part, giving ``"<foo>" <bar>''. This is to 2093 avoid the problem of people who use angle brackets in 2094 their full name information. 2095 Fix a null pointer dereference if you set option "l", have 2096 an Errors-To: header in the message, and have Errors-To: 2097 defined in the config file H lines. From J.R. Oldroyd. 2098 Put YPCOMPAT on #ifdef NIS instead -- it's one less thing to get 2099 wrong when compiling. Suggested by Rick McCarty of TI. 2100 Fix a problem that could pass negative SIZE parameter if the 2101 df file got lost; this would cause servers to always 2102 give a temporary failure, making the problem even worse. 2103 Problem noted by Allan Johannesen of WPI. 2104 Add "ident" timeout (one of the "r" option selectors) for IDENT 2105 protocol timeouts (30s default). Requested by Murray 2106 Kucherawy of HookUp Communication Corp. to handle bogus 2107 PC TCP/IP implementations. 2108 Change $w default definition to be just the first component of 2109 the domain name on config level 5. The $j macro defaults 2110 to the FQDN; $m remains as before. This lets well-behaved 2111 config files use any of the short, long, or subdomain 2112 names. 2113 Add makesendmail script in src to try to automate multi-architecture 2114 builds. I know, this is sub-optimal, but it is still 2115 helpful. 2116 Fix very obscure race condition that can cause a queue run to 2117 get a queue file for an already completed job. This 2118 problem has existed for years. Problem noted by the 2119 long suffering Allan Johannesen of WPI. 2120 Fix a problem that caused the raw sender name to be passed to 2121 udbsender instead of the canonified name -- this caused 2122 it to sometimes miss records that it should have found. 2123 Relax check of name on HELO packet so that a program using -bs 2124 that claims to be itself works properly. 2125 Restore rewriting of $: part of address through 2, R, 4 in 2126 buildaddr -- this requires passing a lot of flags to get 2127 it right. Unlike old versions, this ONLY rewrites 2128 recipient addresses, not sender addresses. 2129 Fix a bug that caused core dumps in config files that cannot 2130 resolve /file/name style addresses. Fix from Jonathan 2131 Kamens of OpenVision Technologies. 2132 Fix problem with fcntl locking that can cause error returns to 2133 be lost if the lock is lost; this required fully 2134 queueing everything, dropping the envelope (so errors 2135 would get returned), and then re-reading the queue from 2136 scratch. 2137 Fix a problem that caused aliases that redefine an otherwise 2138 true address to still send to the original address 2139 if and only if the alias failed in certain bizarre 2140 ways (e.g, if they pointed at a list:; syntax address). 2141 Problem pointed out by Jonathan Kamens. 2142 Remove support for frozen configuration files. They caused 2143 more trouble than it was worth. 2144 Fix problem that can cause error messages to get ignored when 2145 using both -odb and -t flags. Problem noted by Rob 2146 McNicholas at U.C. Berkeley. 2147 Include all "normal" variations on hostname in $=w. For example, 2148 if the host name is vangogh.cs.berkeley.edu, $=w will 2149 contain vangogh, vangogh.cs, and vangogh.cs.berkeley.edu. 2150 Add "restrictqrun" privacy flag -- without this, anyone can run 2151 the queue. 2152 Reset SmtpPhase global on initial connection creation so that 2153 messages don't come out with stale information. 2154 Pass an "ext" argument to lockfile so that error/log messages 2155 will properly reflect the true filename being locked. 2156 Put all [...] address forms into $=w -- this eliminates the need 2157 for MAXIPADDR in conf.h. Suggested by John Gardiner 2158 Myers of CMU. 2159 Fix a bug that can cause qf files to be left around even after 2160 an SMTP RSET command. Problem and fix from Michael 2161 Corrigan. 2162 Don't send a PostMasterCopy to errors when the Precedence: is 2163 negative. Error reports still go to the envelope 2164 sender address. 2165 Add LA_SHORT for load averages. 2166 Lock sendmail.st file when posting statistics. 2167 Add "SendBufSize" and "RcvBufSize" suboptions to "O" option to 2168 set the size of the TCP send and receive buffers; if you 2169 run over a slow slip line you may need to set these down 2170 (although it would be better to fix the SLIP implementation 2171 so that it's not necessary to recompile every program 2172 that does bulk data transfer). 2173 Allow null defaults on $( ... $) lookups. Problem reported by 2174 Amir Plivatsky. 2175 Diagnose crufty S and V config lines. This resulted from an 2176 observation that some people were using the SITE macro 2177 without the SITECONFIG macro first, which was causing 2178 bogus config files that were not caught. 2179 Fix makemap -f flag to turn off case folding (it was turning it 2180 on instead). THIS IS A USER VISIBLE CHANGE!!! 2181 Fix a problem that caused multiple error messages to be sent if 2182 you used "sendmail -t -oem -odb", your system uses fcntl 2183 locking, and one of the recipient addresses is unknown. 2184 Reset uid earlier in include() so that recursive .forwards or 2185 :include:s don't use the wrong uid. 2186 If file descriptor 0, 1, or 2 was closed when sendmail was 2187 called, the code to recover the descriptor was broken. 2188 This sometimes (only sometimes) caused problems with the 2189 alias file. Fix from Motonori Nakamura. 2190 Fix a problem that caused aliaswait to go into infinite recursion 2191 if the @:@ metasymbol wasn't found in the alias file. 2192 Improve error message on newaliases if database files cannot be 2193 opened or if running with no database format defined. 2194 Do a better estimation of the size of error messages when NoReturn 2195 is set. Problem noted by P{r (Pell) Emanuelsson. 2196 Fix a problem causing the "c" option (don't connect to expensive 2197 mailers) to be ignored in SMTP. Problem noted and the 2198 solution suggested by Robert Elz of Munnari University. 2199 Improve connection caching algorithm by passing "[host]" to 2200 hostsignature, which strips the square brackets and 2201 returns the real name. This allows mailertable entries 2202 to match regular entries. 2203 Re-enable Return-Receipt-To: -- people seem to want this stupid 2204 feature, even if it doesn't work right. 2205 Catch and log attempts to try the "wiz" command in server SMTP. 2206 This also ups the log level from LOG_NOTICE to LOG_CRIT. 2207 Be more generous at assigning $z to the home directory -- do this 2208 for programs that are specified through a .forward file. 2209 Fix from Andrew Chang of Sun Microsystems. 2210 Always save a fatal error message in preference to a non-fatal 2211 error message so that the "subject" line of return 2212 messages is the best possible. 2213 CONFIG: reduce the number of quotes needed to quote configuration 2214 parameters with commas: two quotes should work now, e.g., 2215 define(ALIAS_FILE, ``/etc/aliases,/etc/aliases.local''). 2216 CONFIG: class $=Z is a set of UUCP hosts that use uucp-dom 2217 connections (domain-ized UUCP). 2218 CONFIG: fix bug in default maps (-o must be before database file 2219 name). Pointed out by Christophe Wolfhugel. 2220 CONFIG: add FEATURE(nodns) to state that we are not relying on 2221 DNS. This would presumably be used in UUCP islands. 2222 CONFIG: add OSTYPE(nextstep) and OSTYPE(linux). 2223 CONFIG: log $u in Received: line. This is in technical violation 2224 of the standards, since it doesn't guarantee a domain 2225 on the address. 2226 CONFIG: don't assume "m" in local mailer flags -- this means that 2227 if you redefine LOCAL_MAILER_FLAGS you will have to include 2228 the "m" flag should you want it. Apparently some Solaris 2.2 2229 installations can't handle multiple local recipients. 2230 Problem noted by Josh Smith. 2231 CONFIG: add confDOMAIN_NAME to set $j (if undefined, $j defaults). 2232 CONFIG: change default version level from 4 to 5. 2233 CONFIG: add FEATURE(nullclient) to create a config file that 2234 forwards all mail to a hub without ever looking at the 2235 addresses in any detail. 2236 CONFIG: properly strip mailer: information off of relays when 2237 used to change .BITNET form into %-hack form. 2238 CONFIG: fix a problem that caused infinite loops if presented 2239 with an address such as "!foo". 2240 CONFIG: check for self literal (e.g., [128.32.131.12]) even if 2241 the reverse "PTR" mapping is broken. There's a better 2242 way to do this, but the change is fairly major and I 2243 want to hold it for another release. Problem noted by 2244 Bret Marquis. 2245 22468.5/8.5 93/07/23 2247 Serious bug: if you used a command line recipient that was unknown 2248 sendmail would not send a return message (it was treating 2249 everything as though it had an SMTP-style client that 2250 would do the return itself). Problem noted by Josh Smith. 2251 Change "trymx" option in getcanonname() to ignore all MX data, 2252 even during a T_ANY query. This actually didn't break 2253 anything, because the only time you called getcanonname 2254 with !trymx was if you already knew there were no MX 2255 records, but it is somewhat cleaner. From Motonori 2256 Nakamura. 2257 Don't call getcanonname from getmxrr if you already know there 2258 are no DNS records matching the name. 2259 Fix a problem causing error messages to always include "The 2260 original message was received ... from localhost". 2261 The correct original host information is now included. 2262 Previous change to cf/sh/makeinfo.sh doesn't port to Ultrix (their 2263 version of "test" doesn't have the -x flag). Change it 2264 to use -f instead. From John Myers. 2265 CONFIG: 8.4 mistakenly set the default SMTP-style mailer to 2266 esmtp -- it should be smtp. 2267 CONFIG: send all relayed mail using confRELAY_MAILER (defaults 2268 to "relay" (a variant of "smtp") if MAILER(smtp) is used, 2269 else "suucp" if MAILER(uucp) is used, else "unknown"); 2270 this cleans up the configs somewhat. This fixes a serious 2271 problem that caused route-addrs to get mistaken as relays, 2272 pointed out by John Myers. WARNING: this also causes 2273 the default on SMART_HOST to change from "suucp" to 2274 "relay" if you have MAILER(smtp) specified. 2275 22768.4/8.4 93/07/22 2277 Add option `w'. If you receive a message that comes to you because 2278 you are the best (lowest preference) target of an MX, and 2279 you haven't explicitly recognized the source MX host in 2280 your .cf file, this option will cause you to try the target 2281 host directly (as if there were no MX for it at all). If 2282 `w' is not set, this case is a configuration error. 2283 Beware: if `w' is set, senders may get bogus errors like 2284 "message timed out" or "host unknown" for problems that 2285 are really configuration errors. This option is 2286 disrecommended, provided only for compatibility with 2287 UIUC sendmail. 2288 Fix a problem that caused the incoming socket to be left open 2289 when sendmail forks after the DATA command. This caused 2290 calling systems to wait in FIN_WAIT_2 state until the 2291 entire list was processed and the child closed -- a 2292 potentially prodigious amount of time. Problem noted 2293 by Neil Rickert. 2294 Fix problem (created in 6.64) that caused mail sent to multiple 2295 addresses, one of which was a bad address, to completely 2296 suppress the sending of the message. This changes 2297 handling of EF_FATALERRS somewhat, and adds an 2298 EF_GLOBALERRS flag. This also fixes a potential problem 2299 with duplicate error messages if there is a syntax error 2300 in the header of a message that isn't noticed until late 2301 in processing. Original problem pointed out by Josh Smith 2302 of Harvey Mudd College. This release includes quite a bit 2303 of dickering with error handling (see below). 2304 Back out SMTP transaction if MAIL gets nested 501 error. This 2305 will only hurt already-broken software and should help 2306 humans. 2307 Fix a problem that broke aliases when neither NDBM nor NEWDB were 2308 compiled in. It would never read the alias file. 2309 Repair unbalanced `)' and `>' (the "open" versions are already 2310 repaired). 2311 Logging of "done" in dropenvelope() was incorrect: it would 2312 log this even when the queue file still existed. Change 2313 this to only log "done" (at log level 11) when the 2314 queue file is actually removed. From John Myers. 2315 Log "lost connection" in server SMTP at log level 20 if there 2316 is no pending transaction. Some senders just close the 2317 connection rather than sending QUIT. 2318 Fix a bug causing getmxrr to add a dot to the end of unqualified 2319 domains that do not have MX records -- this would cause 2320 the subsequent host name lookup to fail. The problem 2321 only occurred if you had FEATURE(nocanonify) set. 2322 Problem noted by Rick McCarty of Texas Instruments. 2323 Fix invocation of setvbuf when passed a -X flag -- I had 2324 unwittingly used an ANSI C extension, and this caused 2325 core dumps on some machines. 2326 Diagnose self-destructive alias loops on RCPT as well as EXPN. 2327 Previously it just gave an empty send queue, which 2328 then gave either "Need RCPT (recipient)" at the DATA 2329 (confusing, since you had given an RCPT command which 2330 returned 250) or just dropped the email, depending on 2331 whether you were running VERBose mode. Now it usually 2332 diagnoses this case as "aliasing/forwarding loop broken". 2333 Unfortunately, it still doesn't adequately diagnose 2334 some true error conditions. 2335 Add internal concept of "warning messages" using 6xx codes. 2336 These are not reported only to Postmaster. Unbalanced 2337 parens, brackets, and quotes are printed as 653 codes. 2338 They are always mapped to 5xx codes before use in SMTP. 2339 Clean up error messages to tell both the actual address that 2340 failed and the alias they arose from. This makes it 2341 somewhat easier to diagnose problems. Difficulty noted 2342 by Motonori Nakamura. 2343 Fix a problem that inappropriately added a ctladdr to addresses 2344 that shouldn't have had one during a queue run. This 2345 caused error messages to be handled differently during 2346 a queue run than a direct run. 2347 Don't print the qf name and line number if you get errors during 2348 the direct run of the queue from srvrsmtp -- this was 2349 just extra stuff for users to crawl through. 2350 Put command line flags on second line of pid file so you can 2351 auto-restart the daemon with all appropriate arguments. 2352 Use "kill `head -1 /etc/sendmail.pid`" to stop the 2353 daemon, and "eval `tail -1 /etc/sendmail.pid`" to 2354 restart it. 2355 Remove the ``setuid(getuid())'' in main -- this caused the 2356 IDENT daemon to screw up. This required that I change 2357 HASSETEUID to HASSETREUID and complicate the mode 2358 changing somewhat because both Ultrix and SunOS seem 2359 to have a bug causing seteuid() to set the saved uid 2360 as well as the effective. The program test/t_setreuid.c 2361 will test to see if your implementation of setreuid(2) 2362 is appropriately functional. 2363 The FallBackMX (option V) handling failed to properly identify 2364 fallback to yourself -- most of the code was there, 2365 but it wasn't being enabled. Problem noted by Murray 2366 Kucherawy of the University of Waterloo. 2367 Change :include: open timeout from ETIMEDOUT to an internal 2368 code EOPENTIMEOUT; this avoids adding "during SmtpPhase 2369 with CurHostName" in error messages, which can be 2370 confusing. Reported by Jonathan Kamens of OpenVision 2371 Technologies. 2372 Back out setpgrp (setpgid on POSIX systems) call to reset the 2373 process group id. The original fix was to get around 2374 some problems with recalcitrant MUAs, but it breaks 2375 any call from a shell that creates a process group id 2376 different from the process id. I could try to fix 2377 this by diddling the tty owner (using tcsetpgrp or 2378 equivalent) but this is too likely to break other 2379 things. 2380 Portability changes: 2381 Support -M as equivalent to -oM on Ultrix -- apparently 2382 DECnet calls sendmail with -MrDECnet -Ms<HOST> -bs 2383 instead of using standard flags. Oh joy. This 2384 behaviour reported by Jon Giltner of University 2385 of Colorado. 2386 SGI IRIX -- this includes several changes that should 2387 help other strict ANSI compilers. 2388 SCO Unix -- from Murray Kucherawy of HookUp Communication 2389 Corporation. 2390 Solaris running the Sun C compiler (which despite the 2391 documentation apparently doesn't define 2392 __STDC__ by default). 2393 ConvexOS from Eric Schnoebelen of Convex. 2394 Sony NEWS workstations and Omron LUNA workstations from 2395 Motonori Nakamura. 2396 CONFIG: add confTRY_NULL_MX_LIST to set option `w'. 2397 CONFIG: delete `C' and `e' from default SMTP mailers flags; 2398 several people have made a good argument that this 2399 creates more problems than it solves (although this 2400 may prove painful in the short run). 2401 CONFIG: generalize all the relays to accept a "mailer:host" 2402 format. 2403 CONFIG: move local processing in ruleset 0 into a new ruleset 2404 98 (8 on old sendmail). Domain literal [a.b.c.d] 2405 addresses are also passed through this ruleset. 2406 CONFIG: if neither SMART_HOST nor MAILER(smtp) were defined, 2407 internet-style addresses would "fall off the end" of 2408 ruleset zero and be interpreted as local -- however, 2409 the angle brackets confused the recursive call. 2410 These are now diagnosed as "Unrecognized host name". 2411 CONFIG: USENET rules weren't included in S0 because of a mistaken 2412 ifdef(`_MAILER_USENET_') instead of 2413 ifdef(`_MAILER_usenet_'). Problem found by Rein Tollevik 2414 of SINTEF RUNIT, Oslo. 2415 CONFIG: move up LOCAL_RULE_0 processing so that it happens very 2416 early in ruleset 0; this allows .mc authors to bypass 2417 things like the "short circuit" code for local addresses. 2418 Prompted by a comment by Bill Wisner of The Well. 2419 CONFIG: add confSMTP_MAILER to define the mailer used (smtp or 2420 esmtp) to send SMTP mail. This allows you to default 2421 to esmtp but use a mailertable or other override to 2422 deal with broken servers. This logic was pointed out 2423 to me by Bill Wisner. Ditto for confLOCAL_MAILER. 2424 Changes to cf/sh/makeinfo.sh to make it portable to SVR4 2425 environments. Ugly as sin. 2426 24278.3/8.3 93/07/13 2428 Fix setuid problems introduced in 8.2 that caused messages 2429 like "Cannot create qfXXXXXX: Invalid argument" 2430 or "Cannot reopen dfXXXXXX: Permission denied". This 2431 involved a new compile flag "HASSETEUID" that takes 2432 the place of the old _POSIX_SAVED_IDS -- it turns out 2433 that the POSIX interface is broken enough to break 2434 some systems badly. This includes some fixes for 2435 HP-UX. Also fixes problems where the real uid is 2436 not reset properly on startup (from Neil Rickert). 2437 Fix a problem that caused timed out messages to not report the 2438 addresses that timed out. Error messages are also more 2439 "user friendly". 2440 Drop required bandwidth on connections from 64 bytes/sec to 2441 16 bytes/sec. 2442 Further Solaris portability changes -- doesn't require the BSD 2443 compatibility library. This also adds a new 2444 "HASGETDTABLESIZE" compile flag which can be used if 2445 you want to use getdtablesize(2) instead of sysconf(2). 2446 These are loosely based on changes from David Meyer at 2447 University of Oregon. This now seems to work, at least 2448 for quick test cases. 2449 Fix a problem that can cause duplicate error messages to be 2450 sent if you are in SMTP, you send to multiple addresses, 2451 and at least one of those addresses is good and points 2452 to an account that has a .forward file (whew!). 2453 Fix a problem causing messages to be discarded if checkcompat() 2454 returned EX_TEMPFAIL (because it didn't properly mark 2455 the "to" address). Problem noted by John Myers. 2456 Fix dfopen to return NULL if the open failed; I was depending 2457 on fdopen(-1) returning NULL, which isn't the case. This 2458 isn't serious, but does result in wierd error diagnoses. 2459 From Michael Corrigan. 2460 CONFIG: add UUCP_MAX_SIZE M4 macro to set the maximum size of 2461 messages sent through UUCP-family mailers. Suggested 2462 by Bill Wisner of The Well. 2463 CONFIG: if both MAILER(uucp) and MAILER(smtp) are specified, 2464 include a "uucp-dom" mailer that uses domain-style 2465 addressing. Suggested by Bill Wisner. 2466 CONFIG: Add LOCAL_SHELL_FLAGS and LOCAL_SHELL_ARGS to match 2467 LOCAL_MAILER_FLAGS and LOCAL_MAILER_ARGS. Suggested by 2468 Christophe Wolfhugel. 2469 CONFIG: Add OSTYPE(aix3). From Christophe Wolfhugel. 2470 24718.2/8.2 93/07/11 2472 Don't drop out on config file parse errors in -bt mode. 2473 On older configuration files, assume option "l" (use Errors-To 2474 header) for back compatibility. NOTE: this DOES NOT 2475 imply an endorsement of the Errors-To: header in any way. 2476 Accept -x flag on AIX-3 as well as OSF/1. Why, why, why??? 2477 Don't log errors on EHLO -- it isn't a "real" error for an old 2478 SMTP server to give an error on this command, and 2479 logging it in the transcript can be confusing. Fix 2480 from Bill Wisner. 2481 IRIX compatibility changes provided by Dan Rich 2482 <drich@sandman.lerc.nasa.gov>. 2483 Solaris 2 compatibility changes. Provided by Bob Cunningham 2484 <bob@kahala.soest.hawaii.edu>, John Oleynick 2485 <juo@klinzhai.rutgers.edu> 2486 Debugging: -d17 was overloaded (hostsignature and usersmtp.c); 2487 move usersmtp (smtpinit and smtpmailfrom) to -d18 to 2488 match the other flags in that file. 2489 Flush transcript before fork in mailfile(). From Eric Wassenaar. 2490 Save h_errno in mci struct and improve error message display. 2491 Changes from Eric Wassenaar. 2492 Open /dev/null for the transcript if the create of the xf file 2493 failed; this avoids at least one possible null pointer 2494 reference in very wierd cases. From Eric Wassenaar. 2495 Clean up statistics gathering; it was over-reporting because of 2496 forks. From Eric Wassenaar. 2497 Fix problem that causes old Return-Path: line to override new 2498 Return-Path: line (conf.c needs H_FORCE to avoid 2499 re-using old value). From Motonori Nakamura. 2500 Fix broken -m flag in K definition -- even if -m (match only) 2501 was specified, it would still replace the key with the 2502 value. Noted by Rick McCarty of Texas Instruments. 2503 If the name server timed out over several days, no "timed out" 2504 message would ever be sent back. The timeout code 2505 has been moved from markfailure() to dropenvelope() 2506 so that all such failures should be diagnosted. Pointed 2507 out by Christophe Wolfhugel and others. 2508 Relax safefile() constraints: directories in an include or 2509 forward path must be readable by self if the controlling 2510 user owns the entry, readable by all otherwise (e.g., 2511 when reading your .forward file, you have to own and 2512 have X permssion in it; everyone needs X permission in 2513 the root and directories leading up to your home); 2514 include files must be readable by anyone, but need not 2515 be owned by you. 2516 If _POSIX_SAVED_IDS is defined, setuid to the owner before 2517 reading a .forward file; this gets around some problems 2518 on NFS mounts if root permission is not exported and 2519 the user's home directory isn't x'able. 2520 Additional NeXT portability enhancements from Axel Zinser. 2521 Additional HP-UX portability enhancements from Brian Bullen. 2522 Add a timeout around SMTP message writes; this assumes you can 2523 get throughput of at least 64 bytes/second. Note that 2524 this does not impact the "datafinal" default, which 2525 is separate; this is just intended to work around 2526 network clogs that will occur before the final dot 2527 is sent. From Eric Wassenaar. 2528 Change map code to set the "include null" flag adaptively -- 2529 it initially tries both, but if it finds anything 2530 matching without a null it never tries again with a 2531 null and vice versa. If -N is specified, it never 2532 tries without the null and creates new maps with a 2533 null byte. If -O is specified, it never tries with 2534 the null (for efficiency). If -N and -O are specified, 2535 you get -NO (get it?) lookup at all, so this would 2536 be a bad idea. If you don't specify either -N or -O, 2537 it adapts. 2538 Fix recognition of "same from address" so that MH submissions 2539 will insert the appropriate full name information; 2540 this used to work and got broken somewhere along the 2541 way. 2542 Some changes to eliminate some unnecessary SYSERRs in the 2543 log. For example, if you lost a connection, don't 2544 bother reporting that fact on the connection you lost. 2545 Add some "extended debugging" flags to try to track down 2546 why we get occassional problems with file descriptor 2547 one being closed when execing a mailer; it seems to 2548 only happen when there has been another error in the 2549 same transaction. This requires XDEBUG, defined 2550 by default in conf.h. 2551 Add "-X filename" command line flag, which logs both sides of 2552 all SMTP transactions. This is intended ONLY for 2553 debugging bad implementations of other mailers; start 2554 it up, send a message from a mailer that is failing, 2555 and then kill it off and examine the indicated log. 2556 This output is not intended to be particularly human 2557 readable. This also adds the HASSETVBUF compile 2558 flag, defaulted on if your compiler defines __STDC__. 2559 CONFIG: change SMART_HOST to override an SMTP mailer. If you 2560 have a local net that should get direct connects, you 2561 will need to use LOCAL_NET_CONFIG to catch these hosts. 2562 See cf/README for an example. 2563 CONFIG: add LOCAL_MAILER_ARGS (default: `mail -d $u') to handle 2564 sites that don't use the -d flag. 2565 CONFIG: hide recipient addresses as well as sender addresses 2566 behind $M if FEATURE(allmasquerade) is specified; this 2567 has been requested by several people, but can break 2568 local aliases. For example, if you mail to "localalias" 2569 this will be rewritten as "localalias@masqueradehost"; 2570 although initial delivery will work, replies will be 2571 broken. Use it sparingly. 2572 CONFIG: add FEATURE(domaintable). This maps unqualified domains 2573 to qualified domains in headers. I believe this is 2574 largely equivalent to the IDA feature of the same name. 2575 CONFIG: use $U as UUCP name instead of $k. This permits you 2576 to override the "system name" as your UUCP name -- 2577 in particular, to use domain-ized UUCP names. From 2578 Bill Wisner of The Well. 2579 CONFIG: create new mailer "esmtp" that always tries EHLO 2580 first. This is currently unused in the config files, 2581 but could be used in a mailertable entry. 2582 25838.1C/8.1B 93/06/27 2584 Serious security bug fix: it was possible to read any file on 2585 the system, regardless of ownership and permissions. 2586 If a subroutine returns a fully qualified address, return it 2587 immediately instead of feeding it back into rewriting. 2588 This fixes a problem with mailertable lookups. 2589 CONFIG: fix some M4 frotz (concat => CONCAT) 2590 25918.1B/8.1A 93/06/12 2592 Serious bug fix: pattern matching backup algorithm stepped by 2593 two tokens in classes instead of one. Found by Claus 2594 Assmann at University of Kiel, Germany. 2595 25968.1A/8.1A 93/06/08 2597 Another mailertable fix.... 2598 25998.1/8.1 93/06/07 2600 4.4BSD freeze. No semantic changes. 2601 26026.65/6.34 93/06/06 2603 Fix some lintish problems. 2604 Fix some cases where server SMTP behaved poorly when handed bogus 2605 input, pointed out by Eric Wassenaar. 2606 CONFIG: fix some more (sigh) mailertable bugs -- thanks to 2607 Motonori Nakamura of Kyoto University (again). 2608 26096.64/6.33 93/06/05 2610 Don't send 050 (-v) information after the 250 response to a QUIT 2611 command in srvrsmtp -- clients usually close the connection 2612 at this point, and it causes bogus error messages. 2613 Don't send messages that have errors on input (such as unbalanced 2614 parentheses) during SMTP transactions, since a return 2615 message has (probably) already been sent. 2616 Give better diagnostics on timeouts during network reads, including 2617 information similar to the SMTP phase. 2618 Fix bug that caused SMTP messages to deliver synchronously; this 2619 happened after the DATA 250, and hence caused reading the 2620 next command to be delayed. 2621 Ignore Errors-To: header unless 'l' (lower case el) header is 2622 specified. The Errors-To: header violates RFC 1123. 2623 Errors-To: was only needed to take the place of the 2624 envelope sender in the days when most Unix mailers 2625 didn't understand about the two kinds of senders. 2626 Don't send warning messages in response to automatically generated 2627 messages (that is, those From:<>). 2628 CONFIG: fix some rather stupid typos in the mailertable code 2629 pointed out by Motonori Nakamura of Kyoto University. 2630 CONFIG: add confUSE_ERRORS_TO configuration option. 2631 CONFIG: if ALWAYS_ADD_DOMAIN is selected, try to use $M 2632 (masquerade name) instead of $j. 2633 CONFIG: don't add dots to relay names (added in 6.29); it breaks 2634 several things, and can be simulated by dot terminating 2635 the names of relays. For example, use: 2636 DBbit.net.relay. 2637 (note the trailing dot). 2638 26396.63/6.32 93/06/01 2640 Fix prototypes to eliminate chars in argument lists -- some 2641 compilers are pissy about this. 2642 Log protocol ($r) and body type if set so we can determine if 2643 the adaptive algorithms are working. 2644 Pessimize on locking of database files (particularly for NEWDB 2645 databases) during opens. There were problems with 2646 processes opening the file while it was rebuilt; since 2647 NEWDB caches heavily, the reader opened an empty file, 2648 which is an error. If your system has the ability to 2649 lock atomically on open, this works properly; otherwise, 2650 there are race conditions. 2651 Check mod time on .pag file instead of .dir in NDBM aliases 2652 because the .dir file doesn't get updated for small 2653 alias files. From John Gardiner Myers of CMU. 2654 More Solaris portability -- it now compiles on Solaris, but 2655 hangs up in gethostbyname(). 2656 Move setting of RES_DEBUG flag before first myhostname() call 2657 so we can see name server traffic on that call. 2658 Fsync() queue files. 2659 Fix a problem that causes -bi to try to rebuild maps other than 2660 the alias file(s). 2661 Fix a problem that caused udb to reject entries from any but 2662 the first database listed. 2663 Rearrange doc subdirectory for 4.4BSD release tape. 2664 CONFIG: put $r into the Received line. This was an oversight. 2665 CONFIG: fix typo (call to ruleset 99 should have been rulset 90). 2666 CONFIG: move "auxiliary" subroutines to be in ruleset 90-99 2667 range -- in the long run, single digit rulesets may 2668 become reserved for builtin use by sendmail. 2669 CONFIG: fix major problem that causes host aliases (that is, 2670 anything in $=w != $j) to not be recognized. This has 2671 been around since 6.30. 2672 26736.62/6.31 93/05/28 2674 BETA RELEASE 2675 Fix recursive syserr (if there is an error printing a syserr 2676 message). This makes the code much less eager to consider 2677 a write error as serious. This also includes some 2678 heuristics to be clever about closed connections. 2679 Lock NEWDB files during gets. This requires version 1.5 or later 2680 of the db library. If you have an older version, you 2681 can use -DOLD_NEWDB. This will go away in a few weeks. 2682 Fix problem causing aliases that use host maps to get overwritten. 2683 Do appropriate byte swapping on port numbers in ident protocol 2684 code. Fix from Allan Johannesen of WPI. 2685 Defer opening of map files to the same time as alias files so that 2686 the daemon will tend to pick up new versions more promptly. 2687 Prototype a bunch more functions. 2688 Some Solaris 2.1 changes (still doesn't link though). 2689 Try to simplify Makefiles by including more subordinate #defines 2690 in conf.h (based on OS type). 2691 CONFIG: check for domains if FEATURE(mailertable) is defined. 2692 For example, if the host name is "knecht.cs.berkeley.edu" 2693 it will search the following mailertable keys: 2694 knecht.cs.berkeley.edu 2695 .cs.berkeley.edu 2696 .berkeley.edu 2697 .edu 2698 This could be used to replace the special relays for bitnet 2699 and similar nets. 2700 27016.61/6.30 93/05/24 2702 Fix problem that prevented appending dots on canonified host 2703 names. This breaks tons of config files -- very 2704 important fix. 2705 Fix improper pointer dereference in response to HELO command. 2706 Fix core dump if debugging set in map_rewrite. 2707 CONFIG: add FEATURE(always_add_domain) to always attach the 2708 local domain (only impacts local mail). 2709 CONFIG: try to avoid turning names into $j -- although 2710 technically a host can only have one "canonical name", 2711 it seems to be common practice to have several. 2712 27136.60/6.29 93/05/22 2714 Major change: merge alias databases with maps. This expands and 2715 changes the map class interface but fixes a bunch of bugs. 2716 The important user-visible change is that the file name 2717 in a K line now does not include the ".db" extension; this 2718 is added automatically. Also, the -d (NIS domain) flag is 2719 missing from the K config line; use @domain instead. 2720 When compiling, the *_MAP names are gone -- just compile 2721 in NDBM, NEWDB, and/or NIS support. 2722 Announce mailer/host/user triple on -bv flag -- from Brian 2723 Bullen of Stirling University. 2724 Don't send more than one line in response to HELO -- it confuses 2725 Pony Express, which then behaves very badly. However, 2726 this change does send two line 220 greetings, with the 2727 second line reading "ESMTP spoken here". The usersmtp 2728 module recognizes this and goes into ESMTP mode regardless 2729 of the setting of the "a" mailer flag. Thus, "a" means 2730 "always try EHLO". 2731 AIX portability changes (thanks to Christophe Wolfhugel of 2732 Herve Schauer Consultants (Paris) for providing me with 2733 an INSA account for this purpose). Lightly tested. Use 2734 -D_AIX3. This probably breaks compatibility with some 2735 older systems (e.g., 4.2bsd) but still works on SunOS 2736 4.1.2, Ultrix 4.2A, HP-UX 8.07, OSF/1 T1.3, and AIX 3.2.3. 2737 Fix a problem causing an error message loop if the output channel 2738 is hosed. 2739 Add the Makefiles that I use for various environments -- some are 2740 Berkeley make versions and some are old make versions. 2741 My makefile for the NeXT box has gotten lost, alas! 2742 PRALIASES: support for printing NEWDB databases. From 2743 Michael J. Corrigan of U.C. San Diego. 2744 CONFIG: don't pass pseudo-domains to $[ ... $] (if you have 2745 a wildcard MX it can have wierd results). From 2746 Christophe Wolfhugel. 2747 CONFIG: dot terminate relay hostnames in S0. From Christophe 2748 Wolfhugel. 2749 27506.59/6.28 93/05/13 2751 Log version with SMTP daemon startup message. 2752 Adjust setproctitle to work on NetBSD and BSD/386. 2753 Fix null pointer reference in MX fallback code. 2754 A bunch of minor fixes from Eric Wassenaar: 2755 If deliver cannot execv the mailer, return EX_OSERR 2756 instead of EX_TEMPFAIL (to give better 2757 error messages). 2758 Consistently malloc e_message. 2759 Catch degenerate case of calling returntosender() 2760 with an empty returnq. 2761 MIME reformatting. 2762 27636.58/6.28 93/05/13 2764 Fix bug that can cause incorrect verbose display of user smtp 2765 messages. 2766 Disable SMTP VERB command if PRIV_NOEXPN is set (since this 2767 could reveal the same information. 2768 Allow failure when reading SMTP greeting message to go on to 2769 next MX host. 2770 Add "MIME-Version: 1.0" header if using MIME (this was NOT 2771 included in RFC 1344, but Bill King of Allan-Bradley 2772 Company forwarded me email from Nathaniel Borenstein 2773 claiming that it was an inadvertent omission). 2774 Don't use Content-Type: X-message-header. According to John 2775 Myers of CMU, many MIME readers will completely ignore 2776 the data if they don't recognize it. Instead, just 2777 add a blank line to make it a legal (empty) message. 2778 Fix problem causing dots to keep getting appended to cached 2779 hostnames. This can cause buffer overrun conditions. 2780 The problem was found by Erik Forsberg of Retix, 2781 although I used a different bug fix than he provided. 2782 Fix parsing of split header/envelope rewriting specs -- from 2783 Eric Forsberg. 2784 Fix from Eric Wassenaar to correct To: lists in error messages. 2785 27866.57/6.28 93/05/11 2787 Fix minor glitch causing extra ctladdrs to be output to queue 2788 file. Just an annoyance. 2789 Cache results of name server canonification lookups to avoid 2790 backed up queue runs. 2791 Major rewrite of alias.c: considerable cleanup, plus sample 2792 (untested) support for NIS aliases. The "A" option 2793 can now be a comma separated list (or be repeated) -- 2794 that is, you can have multiple alias databases. Each 2795 database can have the syntax ``class:file''; if no class 2796 is specified, the "implicit" class is assumed. Implicit 2797 searches through a list of compiled in types -- hash, 2798 dbm, nis, and stab. Alias files are searched in the 2799 order they are listed. For example: 2800 OAhash:/etc/aliases.local,/etc/aliases 2801 OAnis:mail.aliases@my.nis.domain 2802 first searches the hash database /etc/aliases.local, 2803 then the regular /etc/aliases database, then the NIS 2804 map "mail.aliases" in the NIS domain "my.nis.domain". 2805 If in Verbose mode (probably from VERB command) run SMTP job 2806 in foreground and don't do RCPT optimizations. 2807 Add udb :mailsender as equivalent to owner- for regular aliases. 2808 Delete option 8; add option 7 that means the opposite. That is, 2809 default to 8-bit mode; a special option is needed to 2810 force sendmail into 7 bit mode. 2811 Send error messages in encapsulated MIME format. 2812 New compile flag "NIS" that turns on NIS alias and NIS map 2813 support. 2814 Add "j" option to send error messages in MIME (RFC 1341) 2815 encapsulated message format per RFC 1344. The 2816 syntax is pretty ugly if you don't have MIME-aware 2817 user agents. 2818 Clean up message handling (for display in mailq output). 2819 New setproctitle implementation for 4.4bsd. 2820 Create files (such as ~/dead.letter) using mode FileMode (the 2821 F option value) instead of 0666. 2822 Fix bug causing output of EXPN command to not be fully qualified. 2823 This may cause some problems with UUCP addresses that 2824 will require some config file assistance -- specifically, 2825 the $: part has to include the host name for this output 2826 to make sense. 2827 Fix a problem that sometimes diagnosed errors and still sent the 2828 message if the header syntax was bad. 2829 Fix a bug that caused an error message to be emailed when sendmail 2830 was operating in -bv mode. 2831 Add "ListenQueueSize" keyword to daemon options option (OO) to 2832 set the queue size parameter passed to listen(). You 2833 will normally have to tweak your kernel to up this. 2834 Strip spaces off of beginning of message-id before logging (in 2835 case it was folded across lines). 2836 Tweak compile flags in daemon.c -- there were some cases where 2837 it wouldn't work without NETINET. 2838 Change *file* mailer to output all the usual default headers 2839 (From, Date, Message-Id). It gets used when sending 2840 back error messages. 2841 CONFIG: explicitly catch and diagnose list:; syntax in ruleset 2842 zero -- this is not a valid recipient syntax according 2843 to RFC 821. 2844 CONFIG: add confMIME_FORMAT_ERRORS to send error messages in 2845 MIME format. Defaults to on. 2846 CONFIG: add SMTP_MAILER_FLAGS and UUCP_MAILER_FLAGS to augment 2847 the flags for those mailers. 2848 28496.56/6.27 93/05/01 2850 Fix problem that causes the fallback mail to postmaster 2851 (case ESM_POSTMASTER in savemail()) to not look at 2852 aliases (ugh). 2853 Some more HPUX tweaking (compile flag hpux => __hpux so it 2854 still works in ANSI mode). 2855 Don't try to flock non-regular files when mailing to a file. 2856 In particular, this was a problem if you tried to 2857 send to /dev/null. 2858 Fix a wierd bug that can cause senders to be queued as 2859 recipients if the name server is down when the mail 2860 is initially sent. This hack just ignores sender 2861 deletion (essentially, it sets the MeToo flag) if there 2862 is a TEMPFAIL during processing of the sender address. 2863 Obscure. 2864 Fix a dangling else problem -- from Brian Bullen from University 2865 of Stirling, UK. 2866 Add the "b" mailer flag to force a blank line on the end of 2867 messages. Some brilliant versions of /bin/mail insist 2868 on this but do not add it themselves. 2869 Add the "g" mailer flag to prevent user SMTP from sending 2870 "MAIL From:<>". This is only intended to be a 2871 transitional gesture, and should not be used if at 2872 all possible. It appears that Berkeley and IDA 2873 config files have always handled this properly; the 2874 UK config kit apparently does not. 2875 Don't lowercase and then capitalize header field names -- leave 2876 them with original capitalization. Fixes from Bill 2877 King of Allen-Bradley Company. 2878 Further cleanup and improved reporting of error messages, 2879 particularly conditions that cause messages to be 2880 requeued for future delivery. 2881 Tweak syslog priorities in some cases. 2882 CONFIG: clean up route-addr on UUCP addresses. 2883 28846.55/6.25 93/04/27 2885 HPUX 8.07 compatibility changes in getla() -- I had to make 2886 these changes to get it to work at Berkeley, although 2887 others seem to have been working before (???). 2888 Various patches to XLA code. 2889 Fix problem that causes setuid bit on files to be ignored from 2890 SMTP or in queue runs. Problem noted by Jason Ornstein 2891 of Under The Wire, Inc. 2892 Fix problem that can cause CNAMEs to be ignored. 2893 Generalize getmxrr to match local host in $=w instead of a 2894 single name passed in. 2895 Some cleanup from Eric Wassenaar: 2896 Use FileMailer instead of ProgMailer in two places. 2897 Eliminate duplicate 8th-bit stripping in commaize. 2898 Fix a problem with mis-parsing of backslash escapes 2899 under some circumstances. 2900 NIS map fix (was always including trailing null character) 2901 from Mike Glendinning of Ingres UK. 2902 Add "a" mailer flag to try using ESMTP. It tries the EHLO 2903 command and if that fails falls back to regular SMTP. 2904 Also parses EHLO option keywords. If host supports 2905 SIZE extension, this is added to the MAIL FROM: 2906 command. 2907 Extend "b" option to include a second value which is the 2908 maximum message size this server is willing to accept. 2909 For example, a value of "10/1000000" says that there 2910 must be ten blocks free, and sendmail will reject 2911 any message larger than one megabyte. 2912 Some portability hooks for NeXT (this could be applicable 2913 to Mach in general). You have to create an empty 2914 file called "unistd.h" to get it to compile. 2915 Adjust config values (MAXLINE, MAXATOM, and PSBUFSIZE) to 2916 be more generous. 2917 Add X400-Received: to the list of headers tagged with H_TRACE 2918 in conf.c. From Bill King, Allen-Bradley Co. 2919 29206.54/6.25 93/04/19 2921 Fix problem that caused redefinition of SMTP and QUEUE compile 2922 flags. Pointed out by Jon Forrest of the Sequoia 2000 2923 project at Berkeley. 2924 Properly handle \! hack -- it was treating host\!user as one 2925 token (host!user) instead of three (host, !, user). 2926 Fix from Eric Wassenaar of NIKHEF-H. 2927 Fix compilation problem in getauthinfo() if IDENTPROTO is off. 2928 Turn off DEFNAMES and DNSRCH when getting the hostsignature 2929 (i.e., MX records) in level 1 configuration files; this 2930 matches the old behaviour. From Motonori Nakamura of 2931 Kyoto University. 2932 Improve error message printing -- if sent through an alias, 2933 error messages include the name of the alias in the 2934 message. Unfortunately, in order to make this work 2935 properly in queue runs, this changes the format of the 2936 C line in the qf file. The relatively uselessness of 2937 the previous information was pointed out to me by 2938 Allan E Johannesen of WPI. 2939 Add XLA compile flag to add hooks to Christophe Wolfhugel's 2940 extended load average code. This is still in very early 2941 form. For information regarding the guts of the xla 2942 code, contact Christophe.Wolfhugel@grasp.insa-lyon.fr. 2943 Additional hooks for detecting tempfails in rewriting rules 2944 (that is, in map lookups). 2945 29466.53/6.25 93/04/15 2947 Properly diagnose ruleset zero returning null (instead of a mailer 2948 triple). From Motonori Nakamura of Kyoto University. 2949 More generalization of socket code for other protocols. 2950 Shorten timeouts on reverse name lookups -- since they are done 2951 during connection establishment, long timeouts here can 2952 cause higher level timeouts. This mainly serves to accept 2953 mail from hosts that do not have proper reverse (PTR) DNS 2954 records set up. 2955 Reset e_statmsg before each mailer invocation to avoid bogus 2956 messages in the log. 2957 Redefine $r, $s, and $_ in error envelopes so you don't get 2958 incorrect cruft in the error message. Problem noted by 2959 Motonori Nakamura of Kyoto University. 2960 Fix a problem that can cause failure to return errors to Postmaster 2961 in certain cases. From Motonori Nakamura. 2962 Fix a problem that can cause some systems to give duplicate error 2963 messages when a bad syntax address such as "<a" is presented 2964 to an SMTP server. It doesn't seem to occur on all 2965 machines. From Motonori Nakamura. 2966 Default IDENTPROTO off for Ultrix and HPUX, which apparently have 2967 the interesting "feature" that when they receive a "Host 2968 unreachable" message they closes all open connections to 2969 that host. However, some firewall gateways send this message 2970 if you try to connect to an unauthorized port, such as the 2971 IDENT port (113). Thus, no email can be received from such 2972 hosts. There is some evidence that versions of Ultrix before 2973 4.3 do not have this problem. Thanks to Tom Ivar Helbekkmo 2974 for pointing out this behaviour to me and to Michael Corrigan 2975 of U.C. San Diego for informing me about the HPUX problem. 2976 Allow IPC mailers to return a colon-separated list of hosts in the 2977 $@ clause; these are searched in order as though they were 2978 MX records. 2979 When sending an error report, print the list of addresses tagged 2980 as bad. Requested by Allan E Johannesen of WPI. 2981 Change map function calls to return a status code. This gets 2982 passed back as the result of rewrite. Parseaddr marks 2983 the address as a QUEUEUP address if the return code is 2984 EX_TEMPFAIL. All this to queue properly if the name 2985 server is down. This code is not well tested. This code 2986 changes the interface to map lookup functions (a fifth 2987 parameter, int *statp, is added). Feature requested by 2988 Dan Oscarsson. 2989 Don't delete quotes (in the dequote map) if there are spaces in 2990 the string, since this would cause them to be replaced by 2991 the SpaceSub character. 2992 Accept BODY=8BITMIME on SMTP MAIL command. This isn't advertised 2993 because the 8BIT to 7BIT translation doesn't exist yet. 2994 This does add a "bodytype" field to both envelope and 2995 queue file and a -B command line flag to pass the type in 2996 during direct invocations. 2997 Discard return error messages only on responses to responses to 2998 responses, not on responses to responses. That is, the 2999 algorithm is to try return to sender, then return to 3000 postmaster, then discard. Previously it discarded 3001 immediately if the return to sender pass failed. 3002 CONFIG: back out change to hide unqualified hostnames behind %-hack. 3003 This screws up local aliases and .forward files. 3004 CONFIG: add FEATURE(nocanonify) to turn off calls to $[ ... $]; 3005 some sites only handle completely canonified names. 3006 Requested by John Gardiner Myers of CMU. 3007 CONFIG: some UUCP code was still included even if FEATURE(nouucp) 3008 was specified. 3009 30106.52/6.24 93/04/10 3011 Clean up some minor glitches on error return messages pointed out 3012 by Motonori Nakamura of Kyoto University. 3013 Fix reply() to not reset SmtpReplyBuffer on fatal errors; this 3014 was supposed to reset SmtpMsg Buffer. This makes the 3015 client side code virtually useless. Reported by Allan 3016 E Johannesen of WPI and Phil Brandenberger of Swarthmore. 3017 Better debug messages if fuzzy is disabled, suggested by Allan 3018 E Johannesen of WPI. 3019 Offset SmtpReplyBuffer by four in usersmtp when checking for 3020 loopback. From Eric Wassenaar. 3021 Don't set $s until after runinchild in srvrsmtp -- otherwise 3022 it gets cleared. From Eric Wassenaar. 3023 Implement IDA-style $&x for deferred macro expansion. 3024 More POSIX compatibility. 3025 CONFIG: Hide unqualified hostnames behind %-hack using $s as the 3026 actual sender. This is only done if $r is non-null, that 3027 is, if this is not locally submitted mail. 3028 CONFIG: Add FEATURE(bitdomain) allowing mapping of BITNET host 3029 names to internet domains. A program contributed by 3030 John Gardiner Myers of CMU to create the maps is included 3031 in the contrib directory (in the "misc" tar file). 3032 CONFIG: Add FEATURE(uucpdomain) for a similar mapping for UUCP 3033 hosts. There is currently no tool to create this map. 3034 30356.51/6.23 93/04/04 3036 Add D= mailer flag to specify a path of possible working directories 3037 in which to execute the mailer. This is intended for the 3038 prog mailer; some shells can get upset if they don't have 3039 access to the current directory. 3040 Add RFC 1413 (IDENT) protocol support. This is only very loosely 3041 tested. This adds a $_ macro to be the authenticated 3042 info (in ``user@domain [address]'' form) and debug flag 3043 9 to trace the protocol. 3044 Check for loopbacks in usersmtp instead of srvrsmtp -- there is no 3045 reason for a local agent to not be talking to the localhost 3046 (although the inverse is not true). 3047 Add a few hooks for automated map rebuilding. This is certainly 3048 not done yet. 3049 CONFIG: Have prog mailer specify a path of ``D=$z:/'' -- that is, 3050 user's home directory then the root. 3051 CONFIG: Log RFC 1413 identification in Received: line. 3052 30536.50/6.22 93/04/01 3054 Fixes to requeueing code to make it compute priority, nrcpts, 3055 and the like properly. 3056 30576.49/6.22 93/04/01 3058 Diagnose incorrect privacy flags. Suggested by Bryan Costales 3059 of ICSI. 3060 Some ANSI C fixes. 3061 Arrange to quote backslashes as well as other special characters 3062 in the phrase part of a route-addr. 3063 Some fixes to FallBackMX code suggested by Motonori Nakamura of 3064 Kyoto University. 3065 More vigorous zeroing of CurHostAddr to avoid logging of bogus 3066 host addresses when you are actually just printing 3067 information from the MCI structure; problem noted by 3068 Michael Corrigan of U.C. San Diego. 3069 Don't ignore rest of queue if any job is not runnable. This can 3070 also cause an incorrect job to be lost. Fix from 3071 Eric Wassenaar. 3072 Always respond "quickly" to RCPT command; do alias expansion and 3073 the like later. This also means that mail for lists that 3074 have errors will be acccepted, and an error sent back 3075 later. This is done by instantiating the queue file 3076 and then immediately running and requeueing it. 3077 30786.48/6.22 93/03/30 3079 Fix incorrect diagnosis of infinite loop in ruleset. Problem noted 3080 by several people. 3081 Improve information printed when infinite loops are discovered. 3082 Zero CurHostAddr to fix erroneous internet addresses in log when no 3083 addresses can be bound. Pointed out by Motonori Nakamura 3084 of Kyoto University. 3085 "Probe" SMTP connections using RSET instead of NOOP "just in case". 3086 Suggested by John Gardiner Myers of CMU. 3087 Don't warn about -f if you are setting sender to yourself. 3088 30896.47/6.22 93/03/29 3090 Fix incompatible call to endmailer in smtpquit which causes core 3091 dumps. Noted by Allan E Johannesen of WPI. 3092 HPUX portability changes from Michael J. Corrigan of UC San Diego. 3093 Require MAIL before RCPT command in srvrsmtp.c. This had been 3094 intentional from the 821 draft days when the order wasn't 3095 clear, but is silly now. 3096 Fix bug in nis_magic routine that was initializing parameters 3097 incorrectly. Fix from Takahiro Kanbe of Fuji Xerox 3098 Information Systems Co., Ltd. 3099 Change default for PrivacyFlags in conf.c to 0 -- since it always 3100 "or"s in new values, there was no way to turn off the 3101 AuthWarning stuff. 3102 Add O option to set SMTP daemon options. 3103 Add V option to set fallback MX host. This always sorts at lower 3104 priority than anything it gets from the name server. It 3105 should only be used for environments with very bad network 3106 connectivity. Requested by several people. 3107 Log sending info. It's not clear this is a good idea. 3108 CONFIG: fix typo in mailertable code. Noted by Phil Brandenberger 3109 of Swarthmore. 3110 CONFIG: add confDAEMON_OPTIONS and confFALLBACK_MX to set options 3111 O and V, respectively. 3112 31136.46/6.21 93/03/26 3114 Fix botch in server SMTP that broke transactions that did not 3115 use HELO first (like MH). Fix from Michael Corrigan 3116 of U.C. San Diego. 3117 Fall back to other MX records if there is an error anywhere 3118 in delivery (actually on MAIL or DATA -- RCPT is harder). 3119 Suggested by John Gardiner Myers and Motonori Nakamura. 3120 Revert to non-prototypes -- it turns out that our ANSI C 3121 compiler is more forgiving than most others about 3122 mixing prototyped extern declarations with non-prototyped 3123 function definitions. 3124 Fix a problem with multi-word class matching pointed out by 3125 Neil Rickert. Given: 3126 CX b a.b.c 3127 R$+ $=X $+ $: $1 < $2 > $3 3128 the input "user@a.b.c" failed instead of being properly 3129 rewritten as "user@a.<b>.c". 3130 Neil also convinced me that it was correct that $~ should match 3131 only one token -- the problem is that it's always possible 3132 to add another token, so $~ matches far too eagerly. 3133 31346.45/6.21 93/03/25 3135 Implement multi-word classes (properly!). 3136 31376.44/6.21 93/03/25 3138 Add X-Authentication-Warning: headers to clue users into possible 3139 attempts to forge mail. This is on the authwarnings 3140 privacy flag, but is the default. Suggested by Bryan 3141 Costales of ICSI. 3142 Pass default units for convtime in so they can be more reasonable. 3143 Allow config files to always add a new Comments: header (i.e., 3144 they will be added even if an old one already exists). 3145 Suggested by Bryan Costales of ICSI. 3146 Allow config files to delete an existing Return-Path: header. 3147 These should only be added at final delivery. Suggested 3148 by Bryan Costales of ICSI. 3149 Some debugging additions. Suggested by Bryan Costales of ICSI. 3150 Clean up logging of Family 0 addresses. Noted by David Muir 3151 Sharnoff and others. 3152 Add a "dequote" map class. This allows config files to strip 3153 quotes off of addresses. Note that this is not a builtin 3154 map, just a class -- so you have to define the map 3155 using the K line. 3156 Fix a bug in the queueup() loop getting a locked tf where in 3157 very odd cases it can fall off the bottom and core dump. 3158 Of course, it was P{r Emanuelsson who found it.... 3159 Open a new transcript when splitting an envelope. Problem found 3160 by Allan E Johannesen of WPI. 3161 Improved error output in endmailer if the mailer core dumps. 3162 CONFIG: Fix typo in UUCP mailer definition. 3163 CONFIG: Default several of the new options on: eight bit input, 3164 privacy flags set to "authwarnings", and message warning 3165 set to 4h. 3166 CONFIG: Use dequote map. 3167 31686.43/6.20 93/03/23 3169 Fix problem with assumption of an sa_len field in a generic 3170 sockaddr -- it turns out that most vendors haven't 3171 picked up this (very important) fix. 3172 Change compilation flags for daemon code -- select one or both 3173 of NETINET or NETISO, but don't ever set DAEMON manually. 3174 CONFIG: add FEATURE(mailertable) to do IDA-style mailertables. 3175 31766.42/6.19 93/03/19 3177 Use Postmaster as default fallback return address, not root. 3178 POSIX changes for file descriptor handling. 3179 Diagnose errors writing new queue file. 3180 If you change the owner using an owner- alias, also change the 3181 error mode to EM_MAIL so that errors don't get dropped 3182 into an inappropriate directory. Problem noted by 3183 Allan E Johannesen of WPI. 3184 If you are su'ed to root, send email as who you really are, not 3185 as root. From Brian Kantor of U.C. San Diego. 3186 Allow warning messages to be sent after a configurable interval 3187 has passed without delivery. The message is sent only 3188 once per envelope. This changes the format of the qf 3189 file to have an F line, and the format of the T option 3190 to accept take the format "return/warn" (both intervals). 3191 Don't force all local names to lower case -- this was left over 3192 from the wierd handling of case mapping on aliases. It 3193 is now driven (as expected) by the "u" mailer flag. 3194 Problem noted by P{r Emanuelsson. 3195 Fix problem that caused headers on returned email to be trashed; 3196 they were getting freed, but are still accessible via 3197 BlankEnvelope. 3198 Fix problem that caused bogus ids to be created on returned 3199 mail. 3200 Add support for ISO and other non-INET networking. This is by 3201 no means finished yet. This does assume a lot of other 3202 system support, like a version of gethostbyname that 3203 returns non-AF_INET addresses. 3204 CONFIG: change default on prog mailer to keep upper case in 3205 user names (i.e., in the program command line). 3206 CONFIG: strip trailing dots off of hosts in uucp mailer before 3207 convert to bang format. 3208 CONFIG: create new "relay" mailer for $R (LOCAL_RELAY) and $H 3209 (MAIL_HUB) delivery that doesn't add local domain. Note 3210 that this violates 821, but is probably "more correct" 3211 for what we are trying to do. Problem pointed out by 3212 Michael Graff of Iowa State. 3213 32146.41/6.18 93/03/18 3215 Clean up unnecessary creates of queue ids (i.e., empty qf files) 3216 when not needed, such as when starting up an SMTP 3217 connection. 3218 Fix problem where split envelopes aren't instantiated in the queue. 3219 This is quite a serious bug. 3220 Owner- aliases had problems with leading spaces causing a 3221 premature delimitation. 3222 32236.40/6.18 93/03/18 3224 Have ending 250 (after DATA) include the id; suggested by 3225 Brian Kantor of UC San Diego. 3226 Add logging on envelope splitting. 3227 Change queue ids to have one more letter encoding the hour of 3228 the day so that during a single day there is a greater 3229 likelihood of uniqueness; requested by Brian Kantor. 3230 32316.39/6.18 93/03/18 3232 Fix minor compile problem if LOCKF is defined. 3233 Define size of tobuf in conf.h. Observed by Toshinari Takahashi 3234 of Toshiba. 3235 Restore e_sender -- this is equivalent to e_from.q_paddr without 3236 decorations such as angle brackets and comments. 3237 OSF/1 on Alpha changes from Allan E Johannesen of WPI. 3238 CONFIG: fix typo in S3 for list syntax (;: => :;). Thanks to 3239 Christopher Hoover for noting the problem. 3240 32416.38/6.17 93/03/17 3242 Pass envelope to disconnect to avoid another use of CurEnv, which 3243 can apparently end up being null at inopportune times. 3244 Log "received from" as "relay=" for consistency (suggested by 3245 John Gardiner Myers). 3246 Fix major bug in header handling: if no From: line existed in 3247 the header (so sendmail inserts one), and the sender is 3248 an alias that has an owner, the From: line shows the 3249 owner (as well as the envelope). Fixed by early binding 3250 the headers (which will change debugging output). 3251 HPUX portability patches from Michael J. Corrigan of UC San Diego. 3252 Some attempts to adapt better to out of open file conditions. 3253 Some changes to ctladdr handling in queue files. 3254 32556.37/6.17 93/03/16 3256 MAJOR CHANGE: delete e_sender and e_returnpath (why are these 3257 different from e_from?) and $< macro. 3258 Log correct IP address in relay= field even if the connection 3259 times out. 3260 Log "received from [RESPONSE]" on EF_RESPONSE messages (from 3261 John Gardiner Myers). 3262 Fixes to SysExMsg logging (sometimes just got "message: %s" 3263 instead of "message: error message"), noted by Eric 3264 Wassenaar. Also reported by Motonori Nakamura. 3265 Improvements to MX piggybacking code, from Motonori Nakamura. 3266 Fix case where CurHostName points to an auto variable that has 3267 been deallocated (from Motonori Nakamura). 3268 Fix bug causing newlines to be included in aliases if option 3269 "n" (check alias RHS) is set; bug noted by David Muir 3270 Sharnoff. 3271 Fix problem causing user names that should be mapped to lower 3272 case to not be mapped if they are sent during a queue 3273 run. This greatly simplifies the case mapping code. 3274 Problem noted by Allan E Johannesen of WPI. 3275 Don't do recipient address rewriting in buildaddr. This 3276 improperly did recipient rewriting on sender addresses, 3277 and just seems bogus in general -- but the change could 3278 break some .cf files. 3279 Pass TZ envariable to child processes for System V. 3280 CONFIG: allow LOCAL_RULE_1 and LOCAL_RULE_2 if you want to 3281 define those rulesets. 3282 KNOWN PROBLEM: I have seen some problems on SunOS that causes 3283 the User Data Base to give errors on some addresses. I 3284 have tracked the problem back at least as far as 93.02.15 3285 (version 6.22). Running with debugging on makes it 3286 go away, so I conclude that it is referencing uninitialized 3287 stack data. I haven't been able to track this down yet. 3288 32896.36/6.16 93/03/08 3290 Allow local mailer to specify $@host -- this lets you assign the 3291 "foo" part of jgm+foo to $h for passing in to the local 3292 mailer. 3293 Additional debug printing in getcanonname (show query type). 3294 Don't add the e_fromdomain on sender addresses -- this interacts 3295 wierdly with the owner- code. 3296 Improve delivery logging to not log obvious or meaningless stuff. 3297 Include numeric IP address in Received: lines per RFC 1123 section 3298 5.2.8. 3299 Fixed a bug in checking stat() return value if restrictmailq is 3300 set. Also, check the entire group set instead of just the 3301 primary group. Both from John Gardiner Myers. 3302 Don't have usrerr automatically print errno, since this is often 3303 misleading. 3304 Use transienterror() in makeconnection after connect() fails and 3305 in openmailer after execve() fails (from Eric Wassenaar). 3306 Also moved transienterror() from util.c to conf.c. 3307 Clean up from= logging on response messages. 3308 Undo patch allowing prescan to return a null vector -- it breaks 3309 too many things. 3310 Config: FEATURE(notsticky) lets you use UDB for everything coming 3311 in to the machine, even if it is specifically targetted 3312 to this machine. Without it, UDB is bypassed if the user 3313 name is fully qualified. 3314 Config: fix another minor botch with <> (local mailer wasn't 3315 mapping them properly). 3316 33176.35/6.15 93/03/05 3318 Fix getrealhostname to return null if sinlen <= 0 -- this can 3319 occur if stdin is a pipe. 3320 Avoid infinite loop in getcanonname if name server return 3321 NO_DATA (for example). 3322 Config: avoid having C flag qualify list syntax and error syntax. 3323 33246.34/6.14 93/03/05 3325 Fix logging in deliver to not pass too many parameters to Ultrix 3326 versions of syslog. 3327 Don't write the pid file until after the daemon has actually 3328 opened and conditioned the connection. 3329 Consider addresses "different" if their q_uids differ (so that 3330 two users forwarding to the same program will be seen 3331 as different, rather than the same). 3332 Fix problem with bad parameters in main() -- they set ExitStat 3333 but don't exit. 3334 Fix null pointer references through RealHostName -- painfully 3335 discovered by Allan E Johannesen of WPI. 3336 Fix bug causing user@@localhost to core dump (yuch). 3337 Config: don't put two @host.dom.ain on users in $=E in SMTP 3338 mailer. Also, catch user@ (no host) in ruleset 0. 3339 33406.33/6.13 93/03/03 3341 Config: add confCW_FILE as the name of the cw configuration file 3342 (defaults to /etc/sendmail.cw). From P{r Emanuelsson. 3343 Allow prescan to return a pointer to an empty list -- this is 3344 not an error. Also, clean up error reporting to avoid 3345 double errors (prescan reports once, then the caller 3346 reports again). 3347 Changes to avoid trusting T_ANY queries -- run them, but if you 3348 don't get the info you expected, do T_A and T_MX queries 3349 anyhow. This also fixes an oversight where _res.options 3350 bits were being ignored. 3351 If PRIV_NOVRFY is set, use 252 response code instead of 502 per 3352 RFC 1123 section 5.2.3. It's not 100% clear that this 3353 is correct, but it probably works better with stupid 3354 mailers that do a VRFY and only check the first digit. 3355 33566.32/6.12 93/03/02 3357 Fix uninitialized variable "protocol" in smtp code. 3358 Include <unistd.h> in sendmail.h -- move towards POSIX/ANSI. 3359 Additional hooks for RFC 1427 (ESMTP SIZE extension). This 3360 includes requiring that enoughspace() know the system 3361 block size, which will undoubtedly break most ports. 3362 Trace flag 19 in use for srvrsmtp.c. 3363 Additional logging -- notably the sending mailer name. This 3364 also changes the delivery logging to strict field=value 3365 syntax. 3366 Fix some problems with messages getting sent even to addresses 3367 that had been marked bad -- from Eric Wassenaar. 3368 More WIDE changes: accept host name inside [...] as non-MXed 3369 host. This is intended ONLY for use inside firewalled 3370 environments, where the MX points at the gateway. 3371 Change .cf file conventions so that mapping for <> addresses 3372 don't have an @ in them (to avoid confusing the C mailer 3373 flag). Pointed out by Neil Rickert. 3374 Config extensions for Sam Leffler's FlexFAX software. 3375 33766.31/6.10 93/02/28 3377 Fix some more bugs in alias owner code -- there were some wierd 3378 cases where an error in a non-aliased name would override 3379 the return info in an aliased name with an owner. 3380 Changes from WIDE Project, forwarded to me by Motonori Nakamura: 3381 Log actual delivery host (after MX et al); from 3382 yasuhiro@dcl.co.jp. 3383 Log daemon startup. 3384 Deliver Postmaster copies without a body. 3385 Better logging of SMTP senders. 3386 Send all program email as daemon even when local. 3387 As requested in various forms from many people, accept -qIstring 3388 to limit queue runs to jobs with queue-id matching string. 3389 Similarly for -qRstring for recipients, -qSstring for 3390 senders. 3391 Initial hooks for ESMTP support (see RFC 1425). 3392 Fixed a syntax error in the UUCP mailer specification that caused 3393 core dumps on startup. 3394 Check for missing A= or P= arguments in mailer definitions. 3395 33966.30/6.10 93/02/27 3397 Require FROZENCONFIG compilation flag to include frozen 3398 configuration code. Frozen configuration is really 3399 not a very good idea any more, particularly in shared 3400 library environments. 3401 Do better checking of errno after opens of :include: and .forward 3402 files to defer delivery on network and other transient 3403 errors. Suggestion from Craig Everhart. 3404 Fix minor botch in read timeout macro processing. 3405 Add FEATURE(nouucp) to config files for sites that know absolutely 3406 nothing about UUCP. 3407 Add built cf files to distribution tape and clarify how to build 3408 them if you don't have the Berkeley make. 3409 Some sizeof(long) portability changes for the Alpha, from Allan 3410 E Johannesen. 3411 Add "restrictmailq" privacy flag -- if set, only people in the same 3412 group as your queue directory can print the queue. If you 3413 set this, be sure you also restrict access to log files.... 3414 Fix another bug in owner-list stuff that can cause data files to 3415 be "lost". 3416 Fix a bug with queue runs that cause forwards to yourself to go 3417 into alias/forwarding loops. I'm still iffy about this 3418 fix. 3419 Fix from Eric Wassenaar for suppression of return message code. 3420 34216.29/6.9 93/02/24 3422 Fix yet another problem in alias owner code -- put the wrong return 3423 address on the enclosed return-to-sender letter. 3424 34256.28/6.9 93/02/24 3426 Fix botch in alias owner code that caused it to not operate if the 3427 error was detected locally. 3428 34296.27/6.9 93/02/24 3430 M_LOCAL => M_LOCALMAILER to avoid conflict with Ultrix include 3431 file <sys/mount.h>. 3432 Miscellaneous bug fixes from Eric Wassenaar: 3433 sendmail -bv -t logs the from line even though in verify 3434 mode only. 3435 sendmail -v can go into queue mode if shouldqueue returns 3436 TRUE. 3437 Add route-addr pruning per RFC 1123 section 5.3.3. This can be 3438 disabled using the "R" option. 3439 Delete (always undocumented) -R flag (save original recipients); 3440 there are ways to syslog(3) these now. 3441 Clean up SMTP reply codes -- specify them as needed in the code, 3442 instead of in conf.c -- this was needed during the NCP to 3443 TCP transition, but seems silly now. This also changes 3444 parameters to message and nmessage. 3445 Have mailstats read the .cf file to find the sendmail.st file and 3446 get text versions of mailer names. An initial version of 3447 this code was provided by Tuominen Keijo (although the 3448 comments indicate the good bits were written by "E.V."). 3449 Add yet more System V compatibility hacks. 3450 Fix bug in VRFY code (assumes everything must be a local user). 3451 Allow specification of any of the hard-wired pathnames in the 3452 Makefile. 3453 Delete concept of "trusted users" -- this really didn't provide 3454 any security anyway, and caused some problems. 3455 Delete last vestige of support for the word "at" as an equivalent 3456 to the character "@". 3457 Propagate owner-foo alias information into the envelope sender. 3458 Based on code from John Gardiner Myers. This is a major 3459 semantic change -- beware! 3460 Allow $@ on LHS to indicate "match zero" -- this is used to match 3461 the null expression. 3462 34636.26/6.8 93/02/21 3464 Don't "lose" queue runs. Very important fix from (who else?) 3465 Eric Wassenaar. 3466 Completely reset state on RSET command -- from Eric Wassenaar. 3467 Send error messages and return receipts using an envelope sender 3468 of <> regardless of the setting of $n. Rewriting rules 3469 can undo this if they feel the necessity, as might be 3470 needed for networks that don't understand the syntax. 3471 This is permitted by RFC 821 section 3.6 and required by 3472 RFC 1123 section 5.3.3. THIS REQUIRES VERSION 4 CONFIG 3473 FILES because the rulesets must be able to parse <> 3474 properly. 3475 Don't ever send error messages to "<>" -- they will get sent to 3476 the local postmaster or dumped in /usr/tmp/dead.letter 3477 instead. Per RFC 1123 section 5.3.3. 3478 Explicitly check for email to yourself as a dotted quad. You 3479 have to call $[ [ ... ] $] to get this. 3480 Up the message timeout to five days per RFC 1123 section 5.3.1.1. 3481 Make all read timeouts individually configurable, as strongly 3482 recommended by RFC 1123 section 5.3.2. 3483 Use f_bavail (blocks available to regular users) instead of f_bfree 3484 (blocks available to superuser) in free block checks. 3485 Change $d macro to be the current time, not the origination time, 3486 since this is consistent with how it is used now. 3487 Generalization of enoughspace from Eric Wassenaar covering 3488 SGI, Apollo, HPUX, Ultrix, and SunOS. 3489 Ignore process group signals -- some front ends can do this if 3490 you kill a window too quickly. From Eric Wassenaar. 3491 Change umask to 022. 3492 34936.25/6.8 93/02/20 3494 Close all cached connections before calling mailers and after 3495 forking for delivery (caused double closes which resulted 3496 in false errors). 3497 Add FEATURE(redirect) in config files -- this allows you to alias 3498 old addresses to a pointer to the new address that will 3499 give a 551 error message, but not deliver the mail. 3500 Some code changes to make the 551 errors look pretty. 3501 Names of M4 program paths in config files have changed -- they 3502 are all XXX_MAILER_PATH now, to match XXX_MAILER_FLAGS. 3503 Fix a bug in the QSELFREF code having to do with empty .forward 3504 files, reported by Eric Wassenaar. 3505 Add option "p" (privacy flags); this allows you to tune how 3506 picky the SMTP server will be. This also adds the 3507 confPRIVACY_FLAGS M4 macro in the config files. 3508 Add option "b" (minimum blocks free). If there are fewer than 3509 this number of blocks free on the filesystem containing 3510 the queue directory, the SMTP MAIL command will return 3511 a 452 response and ask you to try again later. This 3512 also adds the confMIN_FREE_BLOCKS M4 macro in the config 3513 files. 3514 Made VRFY just verify (doesn't expand aliases and .forward files); 3515 EXPN does full expansion. RCPT in queue-only mode also 3516 doesn't chase aliases and .forward. 3517 35186.24/6.7 93/02/19 3519 Increase the number of domain search entries in domain.c to allow 3520 for the extra "" entry indicating the root domain. 3521 Reported by Motonori Nakamura of Kyoto U. 3522 Add a "SMART_HOST" in the configs for UUCP-connected sites that 3523 want to forward all mail with extra "@"s to that site. 3524 Also allows SMART_HOST, LOCAL_RELAY, and MAIL_HUB to 3525 be specified as ``mailer:hostname'' to use an alternate 3526 mailer. 3527 Clarified and updated some wording in the Operations Guide. 3528 Add the "c" mailer flag -- this suppresses all comment parts of 3529 addresses (requested by John Curran of NEARnet). 3530 Have -v print prompts in -bt mode even if stdin is not a terminal 3531 (default behaviour is to be silent if not reading from 3532 a terminal). Suggested by Bryan Costales, ICSI. 3533 Move the metacharacters from C0 space (\001-\037) into C1 space 3534 (\201-\237). This also fixes a bunch of potential bugs 3535 with G1 characters (\240-\276) in headers relating to 3536 negative numbers passed to isspace() et al. 3537 Add YP_LAST_MODIFIED and YP_MASTER_NAME to DBM version of alias 3538 database if YPCOMPAT is #defined. Enhancement from 3539 Takahiro Kanbe of Fuji Xerox Information Systems Co., Ltd. 3540 Add "list" Precedence (-30); this can be used with old sendmails 3541 which will map to precedence 0 (which will return error 3542 messages). Suggested by Stephen R. van den Berg. 3543 Many bug fixes from Eric Wassenaar of the National Institute for 3544 Nuclear and High-Energy Physics, Amsterdam: 3545 Clear timeouts properly on open failures in include(). 3546 Don't dereference through NULL if no home directory found. 3547 Re-establish SIGCHLD signal on System 5 in reapchild(). 3548 Avoid NULL pointer reference on -pFOO flag. 3549 Properly handle backslash escapes in comments. 3550 Correctly check reply status on SMTP NOOP command. 3551 Properly save SMTP error message if peer gives 3552 "Service Shutting Down" message. 3553 Avoid writing to the transcript if it couldn't be opened. 3554 Signal errors in SMTP children to parent properly. 3555 Handle self references in a list more globally (include a 3556 QSELFREF bit in the address flags). This enhancement 3557 was suggested by Eric Wassenaar. 3558 Use initgroups() in hpux, even though it's System-V based. The 3559 HASINITGROUPS compile flag can set this on other systems. 3560 This HPUX behaviour was pointed out by Eric Wassenaar. 3561 35626.23/6.6 93/02/16 3563 Clean up handling of LogLevel to make it easier to figure out 3564 what's on what level. 3565 Change log levels to have some consistency: 3566 1 serious system failures, security problems 3567 2 lost communications, protocol failures 3568 3 other serious failures 3569 4 minor errors 3570 5 message collection 3571 6 vrfy logging, creation of return-to-sender 3572 7 delivery failures 3573 8 delivery successes 3574 9 delivery tempfails (queue ups) 3575 10 database expansion 3576 >64 debugging 3577 Allow IDA-style separated processing on S= and R= in Mailer 3578 definition lines. Note that rulesets 1 and 2 are 3579 still used for both addresses as before. Bruce Lilly 3580 gave a convincing argument that RFC976 insists on 3581 this behaviour. 3582 Added some time zones to arpatounix -- they may not be in the 3583 standards, but they are in use. However, I may delete 3584 arpatounix entirely -- there appears to be no reason 3585 for it to exist. 3586 Change to UUCP mailer (in cf directory) to try to do a saner job. 3587 I'm still not certain about this mailer in general. 3588 35896.22/6.5 93/02/15 3590 Fix bug that prevents saving letters in ~/dead.letter. 3591 Don't add angle brackets in VRFY command if angle brackets already 3592 exist in the address. 3593 Fix bogus error message in udbexpand. 3594 Null terminate host buffers in buildaddr (broken in 6.21) -- 3595 IMPORTANT FIX!! 3596 35976.21/6.5 93/02/15 3598 Fix another incorrect error message in alias.c, found by Azuma 3599 Okamoto. 3600 Fix a couple of problems in the more-configurable config files, 3601 found by Tom Ivar Helbekkmo. 3602 Fix problem with quoted :include: entries. 3603 Don't duplicate the filename on verbose printing of .forward and 3604 :include: contents. 3605 Extend size of prescan buffer (to allow bigger addresses). Also, 3606 detect some buffer overflows. 3607 Log user SMTP protocol errors (log level 4). 3608 36096.20/6.4 93/02/14 3610 Fix another problem in the MCI state machine caused when there 3611 were errors generated from the other end to commands 3612 other than RCPT. 3613 36146.19/6.4 93/02/14 3615 Include load average support for DEC Alpha running OSF/1. 3616 Fix multiple-response problem with errors in MAIL From: line. 3617 Fix SMTP reply codes for invalid address syntaxes (give 501; 3618 never give multiple error messages for a single message). 3619 Fix problem where a cached connection timeout rejects all 3620 later connects to that host. 3621 Fix incorrect error message if alias.c is compiled with DBM only. 3622 Additional changes to fix nested conditionals (from Bruce Lilly). 3623 Recover more gracefully from operating system failures, particularly 3624 NULL returns from openmailer (from Noritoshi Demizu, 3625 OMRON Corporation). 3626 Log forward, alias, and userdb expand operations on log level 10; 3627 concept suggested by P{r (Pell) Emanuelsson. 3628 Changes for HPUX 8.07 compatibility. 3629 36306.18/6.4 93/02/12 3631 Allow any config option to be set using an M4 define. 3632 Change UNAME compile flag to HASUNAME for IDA compatibility 3633 (besides, it's a better name). 3634 Note in README that on SunOS it must be linked -Bstatic. 3635 Fairly major change in domain.c to handle wildcard MX records 3636 more rationally. NOTE: the "w" option (no wildcard MX 3637 records match local domain) has been eliminated. 3638 Fix some unset variable references pointed out by Bruce Lilly. 3639 Fix host name in process titles when using cached connection. 3640 36416.17/6.3 93/01/28 3642 Fix System 5 compatibility changes to be compatible with the rest 3643 of the world. 3644 36456.16/6.3 93/01/28 3646 Experimental fix for problem handling errors in the SMTP 3647 protocol in conjunction with connection caching. 3648 System 5 compatibility changes. 3649 36506.15/6.3 93/01/26 3651 Fix a bug that causes local mail delivered using -odq to be 3652 eliminated as a duplicate (because it matched the 3653 ctladdr, now passed in as a C line). These changes 3654 are pretty tricky...... 3655 36566.14/6.3 93/01/25 3657 Add debugging for some MCI errors. 3658 36596.13/6.3 93/01/22 3660 Fix -e compatibility flag to take a value. 3661 Fix a couple of minor compilation warnings on Sun cc. 3662 Improve error messages in a few cases to be more self-explanatory. 3663 36646.12/6.3 93/01/21 3665 Fix yet-another problem with environment handling, pointed out 3666 by Yoshitaka Tokugawa and Tom Ivar Helbekkmo. 3667 Some heuristics to try to limit resource exhaustion problems 3668 if a downstream host has been down for a long time. 3669 Fix problem with incorrect host name being logged in "Connection 3670 timed out" messages (from Tom Ivar Helbekkmo). 3671 Fix some ANSI C problems (from Takahiro Kanbe). 3672 Properly log message sender on returned mail during queue run. 3673 Count number of recipients properly. 3674 Fix a problem in yp map code. 3675 Diagnose "message timed out" (from Motonori Nakamura). 3676 36776.11/6.3 93/01/20 3678 Fix problem with address delimitor inside quotes. 3679 Define $k and $=k to be the UUCP name (from the uname call) 3680 based on code from Bruce Lilly. 3681 36826.10/6.2 93/01/18 3683 Implement arpatounix (largely code from Bruce Lilly). 3684 Log more info (suggested by John Myers). 3685 Allow nested $?...$|...$. (inspired by code from Bruce Lilly of 3686 Sony US). 3687 POSIX compatibility (noted by Keith Bostic). 3688 Handle SMTP MAIL command errors properly (urged by several people, 3689 notably John Myers of CMU). 3690 Do early diagnosis of .cf errors (notably referencing a RHS 3691 substitution that isn't on the LHS). 3692 Adjust checkpointing to better handle batched recipients, suggested 3693 by John Myers. 3694 Fix miscellaneous bugs. 3695 (config files:) Implement MAIL_HUB for all local mail (to handle 3696 NFS-mounted directories) as urged by Tom Ivar Helbekkmo 3697 of the Norwegian School of Economics. 3698 36996.9/6.1 93/01/13 3700 Environment handling simplification/bug fix -- child processes 3701 get a minimal, fixed environment. This avoids different 3702 behaviour in queue runs. 3703 Handle commas inside comments properly. 3704 Properly limit large messages submitted in -obq mode. 3705 37066.8/6.1 93/01/10 3707 Check mtime of thaw file against .cf and sendmail binary, based on 3708 code from John Myers. 3709 37106.7/6.1 93/01/10 3711 MX piggybacking, based on code from John Myers@CMU. 3712 Allow checkcompat to return -1 to mean tempfail. 3713 Bug fix in m_mno computation. 3714 37156.6/6.1 93/01/09 3716 Tuning of queueing functions as recommended by John Gardiner Myers. 3717 Return mail headers (no body) on messages with negative precedence. 3718 Minor other bug fixes. 3719 37206.5/6.1 93/01/03 3721 Fix botch causing queued headers to have ?XX? prefixes. 3722 37236.4/6.1 93/01/02 3724 Changes to recognize special mailer types (e.g., file) early. 3725 37266.3/6.1 93/01/01 3727 Pass timeouts to sfgets. 3728 Check for control characters in addresses. 3729 Fixed deferred error reporting. 3730 Report duplicate aliases. 3731 Handle mixed case recursive aliases. 3732 Misc bug fixes. 3733 37346.2/6.1 92/12/30 3735 Put return-receipt-to on a conf.c flag (but don't set it). 3736 Fix minor syslog problem. 3737