1 SENDMAIL RELEASE NOTES 2 @(#)RELEASE_NOTES 8.7.Beta (Berkeley) 05/24/95 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 Somewhat better handling of UNIX-domain socket addresses -- it 71 should show the pathname rather than hex bytes. 72 Restore ``-ba'' mode -- this reads a file from stdin and parses 73 the header for envelope sender information and uses 74 CR-LF as message terminators. It was thought to be 75 obsolete (used only for Arpanet NCP protocols), but it 76 turns out that the UK ``Grey Book'' protocols require 77 that functionality. 78 Fix a fix in previous release -- if gethostname and gethostbyname 79 return a name without dots, and if a DNS lookup of that 80 name fails, wait one minute and try again even if DNS 81 not specified in the config file -- the problem is that 82 this code is executed before the config file is read. 83 This can result in an extra 60 second delay on startup 84 if (1) you have DNS compiled in, (2) you are not running 85 DNS, (3) your system hostname (as returned by hostname(1)) 86 has no dot, AND (4) the canonical name listed in /etc/hosts 87 or your NIS map has no dot. 88 Check for proper domain name on HELO and EHLO commands per 89 RFC 1123 section 5.2.5. Problem noted by Thomas Dwyer III 90 of Michigan Technological University. 91 Relax chownsafe rules slightly -- old version said that if you 92 can't tell if _POSIX_CHOWN_RESTRICTED is set (that is, 93 if fpathconf returned EINVAL or ENOSYS), assume that 94 chown is not safe. The new version falls back to whether 95 you are on a BSD system or not. This is important for 96 SunOS, which apparently always returns one of those 97 error codes. This impacts whether you can mail to files 98 or not. 99 Syntax errors such as unbalanced parentheses in the configuration 100 file could be omitted if you had "Oem" prior to the 101 syntax error in the config file. Change to always print 102 the error message. It was especially wierd because it 103 would cause a "warning" message to be sent to the Postmaster 104 for every message sent (but with no transcript). Problem 105 noted by Gregory Paris of Motorola. 106 Rewrite collect and putbody to handle full 8-bit data, including 107 zero bytes. These changes are internally extensive, but 108 should have minimal impact on external function. 109 Allow full words for option names -- if the option letter is 110 (apparently) a space, then take the word following -- e.g., 111 O MatchGECOS=TRUE 112 The full list of old and new names is as follows: 113 7 SevenBitInput 114 8 EightBitMode 115 A AliasFile 116 a AliasWait 117 B BlankSub 118 b MinFreeBlocks/MaxMessageSize 119 C CheckpointInterval 120 c HoldExpensive 121 D AutoRebuildAliases 122 d DeliveryMode 123 E ErrorHeader 124 e ErrorMode 125 f SaveFromLine 126 F TempFileMode 127 G MatchGECOS 128 H HelpFile 129 h MaxHopCount 130 i IgnoreDots 131 I ResolverOptions 132 J ForwardPath 133 j SendMimeErrors 134 k ConnectionCacheSize 135 K ConnectionCacheTimeout 136 L LogLevel 137 l UseErrorsTo 138 m MeToo 139 n CheckAliases 140 O DaemonPortOptions 141 o OldStyleHeaders 142 P PostmasterCopy 143 p PrivacyOptions 144 Q QueueDirectory 145 q QueueFactor 146 R DontPruneRoutes 147 r, T Timeout 148 S StatusFile 149 s SuperSafe 150 t TimeZoneSpec 151 u DefaultUser 152 U UserDatabaseSpec 153 V FallbackMXhost 154 v Verbose 155 w TryNullMXList 156 x QueueLA 157 X RefuseLA 158 Y ForkEachJob 159 y RecipientFactor 160 z ClassFactor 161 Z RetryFactor 162 To avoid possible problems with an older sendmail, 163 configuration level 6 is accepted by this version of 164 sendmail; any config file using the new names should 165 specify "V6" in the configuration. 166 Change address parsing to properly note that a phrase before a 167 colon and a trailing semicolon are essentially the same 168 as text outside of angle brackets (i.e., sendmail should 169 treat them as comments). This is to handle the 170 ``group name: addr1, addr2, ..., addrN;'' syntax (it will 171 assume that ``group name:'' is a comment on the first 172 address and the ``;'' is a comment on the last address). 173 This requires config file support to get right. It does 174 understand that :: is NOT this syntax, and can be turned 175 off completely by setting the ColonOkInAddresses option. 176 Level 6 config files added with new mailer flags: 177 A Addresses are aliasable. 178 i Do udb rewriting on envelope as well as header 179 sender lines. Applies to the from address mailer 180 flags rather than the recipient mailer flags. 181 j Do udb rewriting on header recipient addresses. 182 Applies to the sender mailer flags rather than the 183 recipient mailer flags. 184 k Disable check for loops when doing HELO command. 185 o Always run as the mail recipient, even on local 186 delivery. 187 w Check for an /etc/passwd entry for this user. 188 5 Pass addresses through ruleset 5. 189 : Check for :include: on this address. 190 | Check for |program on this address. 191 / Check for /file on this address. 192 @ Look up sender header addresses in the user 193 database. Applies to the mailer flags for the 194 mailer corresponding to the envelope sender 195 address, rather than to recipient mailer flags. 196 Pre-level 6 configuration files set A, w, 5, :, |, /, and @ 197 on the "local" mailer, the o flag on the "prog" and "*file*" 198 mailers, and the ColonOkInAddresses option. 199 Eight-to-seven bit MIME conversions. This borrows ideas from 200 John Beck of Hewlett-Packard, who generously contributed 201 their implementation to me, which I then didn't use (see 202 mime.c for an explanation of why). This adds the 203 EightBitMode option (a.k.a. `8') and an F=8 mailer flag 204 to control handling of 8-bit data. These have to cope with 205 two types of 8-bit data: unlabelled 8-bit data (that is, 206 8-bit data that is entered without declaring it as 8-bit 207 MIME -- technically this is illegal according to the 208 specs) and labelled 8-bit data (that is, it was declared 209 as 8BITMIME in the ESMTP session or by using the 210 -B8BITMIME command line flag). If the F=8 mailer flag is 211 set then 8-bit data is sent to non-8BITMIME machines 212 instead of converting to 7 bit (essentially using 213 just-send-8 semantics). The values for EightBitMode are: 214 m convert unlabelled 8-bit input to 8BITMIME, and do 215 any necessary conversion of 8BITMIME to 7BIT 216 (essentially, the full MIME option). 217 p pass unlabelled 8-bit input, but convert labelled 218 8BITMIME input to 7BIT as required (default). 219 s strict adherence: reject unlabelled 8-bit input, 220 convert 8BITMIME to 7BIT as required. The F=8 221 flag is ignored. 222 Unlabelled 8-bit data is rejected in mode `s' regardless of 223 the setting of F=8. 224 Add new internal class 'n', which is the set of MIME Content-Types 225 which can not be 8 to 7 bit encoded because of other 226 considerations. Types "multipart/*" and "message/*" are 227 never directly encoded (although their components can be). 228 Add new internal class 'e'. This is the set of MIME 229 Content-Transfer-Encodings that can be converted to 230 a seven bit format (Quoted-Printable or Base64). It is 231 preinitialized to contain "7bit", "8bit", and "binary". 232 Add C=charset mailer parameter and the the DefaultCharSet option (no 233 short name) to set the default character set to use in the 234 Content-Type: header when doing encoding of an 8-bit message 235 which isn't marked as MIME into MIME format. If the C= 236 parameter is set on the Envelope From address, use that as 237 the default encoding; else use the DefaultCharSet option. 238 If neither is set, it defaults to "unknown-8bit" as 239 suggested by RFC 1428 section 3. 240 Allow ``U=user:group'' field in mailer definition to set a default 241 user and group that a mailer will be executed as. This 242 overrides the 'u' and 'g' options, and if the `F=S' flag is 243 also set, it is the uid/gid that will always be used (that 244 is, the controlling address is ignored). The values may be 245 numeric or symbolic; if only a symbolic user is given (no 246 group) that user's default group in the passwd file is used 247 as the group. Based on code donated by Chip Rosenthal of 248 Unicom. 249 Allow `u' option to also accept user:group as a value, in the same 250 fashion as the U= mailer option. 251 Add the symbolic time zone name in the Arpanet format dates (as 252 a comment). This adds a new compile-time configuration 253 flag: TZ_TYPE can be set to TZ_TM_NAME (use the value 254 of (struct tm *)->tm_name), TZ_TM_ZONE (use the value 255 of (struct tm *)->tm_zone), TZ_TZNAME (use extern char 256 *tzname[(struct tm *)->tm_isdst]), TZ_TIMEZONE (use 257 timezone()), or TZ_NONE (don't include the comment). Code 258 from Chip Rosenthal. 259 The "Timeout" option (formerly "r") is extended to allow suboptions. 260 For example, 261 O Timeout.helo = 2m 262 There are also two new suboptions "queuereturn" and 263 "queuewarn"; these subsume the old T option. Thus, to 264 set them both the preferred new syntax is 265 O Timeout.queuereturn = 5d 266 O Timeout.queuewarn = 4h 267 Sort queue by host name instead of by message priority if the 268 QueueSortOrder option (no short name) is set is set to 269 ``host''. This makes better use of the connection cache, 270 but may delay more ``interactive'' messages behind large 271 backlogs under some circumstances. This is probably a 272 good option if you have high speed links or don't do lots 273 of ``batch'' messages, but less good if you are using 274 something like PPP on a 14.4 modem. Based on code 275 contributed by Roy Mongiovi of Georgia Tech (my main 276 contribution was to make it configurable). 277 Save i-number of df file in qf file to simplify rebuilding of queue 278 after disasterous disk crash. Suggested by Kyle Jones of 279 UUNET; closely based on code from KJS DECWRL code written 280 by Paul Vixie. NOTA BENE: The qf files produced by 8.7 281 are NOT back compatible with 8.6 -- that is, you can convert 282 from 8.6 to 8.7, but not the other direction. 283 Add ``F=d'' mailer flag to disable all use of angle brackets in 284 route-addrs in envelopes; this is because in some cases 285 they can be sent to the shell, which interprets them as 286 I/O redirection. 287 Don't include error file (option E) with return-receipts; this 288 can be confusing. 289 Don't send "Warning: cannot send" messages to owner-* or 290 *-request addresses. Suggested by Christophe Wolfhugel 291 of the Institut Pasteur, Paris. 292 Allow -O command line flag to set long form options. 293 Add "MinQueueAge" option to set the minimum time between attempts 294 to run the queue. For example, if the queue interval 295 (-q value) is five minutes, but the minimum queue age 296 is fifteen minutes, jobs won't be tried more often than 297 once every fifteen minutes. This can be used to give 298 you more responsiveness if your delivery mode is set to 299 queue-only. 300 Allow "fileopen" timeout (default: 60 seconds) for opening 301 :include: and .forward files. 302 Add "-k", "-v", and "-z" flags to map definitions; these set the 303 key field name, the value field name, and the field 304 delimiter. The field delimiter can be a single character 305 or the sequence "\t" or "\n" for tab or newline. 306 These are for use by NIS+ and similar access methods. 307 Add "nisplus" map class. Takes -k and -v flags to choose the 308 key and value field names respectively. Code donated by 309 Sun Microsystems. 310 Add "hesiod" map class. The "file name" is used as the 311 "HesiodNameType" parameter to hes_resolve(3). Returns the 312 first value found for the match. Code donated by Scott 313 Hutton of Indiana University. 314 Add "netinfo" (NeXT NetInfo) map class. Maps can have a -k flag to 315 specify the name of the property that is searched as the 316 key and a -v flag to specify the name of the property that 317 is returned as the value (defaults to "members"). The 318 default map is "/aliases". 319 Add "text" map class. This does slow, linear searches through 320 text files. The -z flag specifies a column delimiter 321 (defaults to any sequence of white space), the -k flag 322 sets the key column number, and the -v flag sets the 323 value column number. Lines beginning with `#' are treated 324 as comments. 325 Add "program" map class to execute arbitrary programs. The search 326 key is presented as the last argument; the output is one 327 line read from the programs standard output. Exit statuses 328 are from sysexits.h. 329 Add "sequence" map class -- searches maps in sequence until it 330 finds a match. For example, the declarations: 331 Kmap1 ... 332 Kmap2 ... 333 Kmapseq sequence map1 map2 334 defines a map "mapseq" that first searches map1; if the 335 value is found it is returned immediately, otherwise 336 map2 is searched and the value returned. 337 Add "switch" map class. This is much like "sequence" except that 338 the ordering is fetched from an external file, usually 339 the system service switch. The parameter is the name of 340 the service to switch on, and the maps that it will use 341 are this name followed by ".service_type". For example, 342 if the declaration of the map is 343 Ksample switch hosts 344 and the system service switch specifies that hosts are 345 looked up using dns and nis in that order, then this is 346 equivalent to 347 Ksample sequence hosts.dns hosts.nis 348 The subordinate maps must already be defined. 349 Add "user" map class -- looks up users using getpwnam. Takes a 350 "-v field" flag on the definition that tells what passwd 351 entry to return -- legal values are name, passwd, uid, gid, 352 gecos, dir, and shell. Generally expected to be used with 353 the -m (matchonly) flag. 354 Add "bestmx" map class -- returns the best MX value for the host 355 listed as the value. If there are several "best" MX records 356 for this host, one will be chosen at random. 357 Add "userdb" map class -- looks up entries in the user database. 358 The "file name" is actually the tag that will be used, 359 typically "mailname". If there are multiple entries 360 matching the name, the one chosen is undefined. 361 Add multiple queue timeouts (both return and warning). These are 362 set by the Precedence: or Priority: header fields to one of 363 three values. If a Priority: is set and has value "normal", 364 "urgent", or "non-urgent" the corresponding timeouts are 365 used. If no priority is set, the Precedence: is consulted; 366 if negative, non-urgent timeouts are used; if greater than 367 zero, urgent timeouts are used. Otherwise, normal timeouts 368 are used. The timeouts are set by setting the six timeouts 369 queue{warn,return}.{urgent,normal,non-urgent}. 370 Fix problem when a mail address is resolved to a $#error mailer 371 with a temporary failure indication; it works in SMTP, 372 but when delivering locally the mail is silently discarded. 373 This patch, from Kyle Jones of UUNET, bounces it instead 374 of queueing it (queueing is very hard). 375 When using /etc/hosts or NIS-style lookups, don't assume that 376 the first name in the list is the best one -- instead, 377 search for the first one with a dot. For example, if 378 an /etc/hosts entry reads 379 128.32.149.68 mammoth mammoth.CS.Berkeley.EDU 380 this change will use the second name as the canonical 381 machine name instead of the initial, unqualified name. 382 This heuristic is only used for finding your own name on 383 startup, when the system may not be fully configured yet. 384 Change dequote map to replace spaces in quoted text with a value 385 indicated by the -s flag on the dequote map definition. 386 For example, ``Mdequote dequote -s_'' will change 387 "Foo Bar" into an unquoted Foo_Bar instead of leaving it 388 quoted (because of the space character). Suggested by Dan 389 Oscarsson for use in X.400 addresses. 390 Implement long macro names as ${name}; long class names can 391 be similarly referenced as $={name} and $~{name}. 392 Definitions are (e.g.) ``D{name}value''. Names that have 393 a leading lower case letter or punctuation characters are 394 reserved for internal use by sendmail; i.e., config files 395 should use names that begin with a capital letter. Based 396 on code contributed by Dan Oscarsson. 397 Fix core dump if getgrgid returns a null group list (as opposed 398 to an empty group list, that is, a pointer to a list 399 with no members). Fix from Andrew Chang of Sun Microsystems. 400 Fix possible core dump if malloc fails -- if the malloc in xalloc 401 failed, it called syserr which called newstr which called 402 xalloc.... The newstr is now avoided for "panic" messages. 403 Reported by Stuart Kemp of James Cook University. 404 Improve connection cache timeouts; previously, they were not even 405 checked if you were delivering to anything other than an 406 IPC-connected host, so a series of (say) local mail 407 deliveries could cause cached connections to be open 408 much longer than the specified timeout. 409 If an incoming message exceeds the maximum message size, stop 410 writing the incoming bytes to the queue data file, since 411 this can fill your mqueue partition -- this is a possible 412 denial-of-service attack. 413 Don't reject all numeric local user names unless HESIOD is 414 defined. It turns out that Posix allows all-numeric 415 user names. Fix from Tony Sanders of BSDI. 416 Add service switch support. If the local OS has a service 417 switch (e.g., /etc/nsswitch.conf on Solaris) that will 418 be used; otherwise, it falls back to using a local 419 mechanism based on the ServiceSwitchFile option 420 (default: /etc/service.switch). For example, if the 421 service switch lists "files" and "nis" for the aliases 422 service, that will be the default lookup order. Note 423 that you can still stack aliases files however, although 424 you have to list them explicitly as "implicit:filename". 425 Option I (NameServerOptions) no longer sets the "UseNameServer" 426 variable which tells whether or not DNS should be considered 427 canonical. This is now determined based on whether or not 428 "dns" is in the service list for "hosts". 429 Add preliminary support for the ESMTP "DSN" extension (Delivery 430 Status Notifications). This is not yet a standard 431 and the implementation is for experimentation only. 432 For this reason it only announces itself as "X-DSN-0" 433 instead of "DSN". DSN notifications override 434 Return-Receipt-To:. 435 Add T=mtstype keyletter to mailer definitions to define the value 436 for the Final-MTS-Type: and Remote-MTS-Type: fields in the 437 DSN-standard return message. 438 Extend heuristic to force running in ESMTP mode to look for the 439 six-character string "ESMTP " anywhere in the 220 greeting 440 message (not just the second line). This is to provide 441 better compatibility with other ESMTP servers. 442 Print sequence number of job when running the queue so you can 443 easily see how much progress you have made. Suggested 444 by Peter Wemm of DIALix. 445 Map newlines to spaces in logged message-ids; some versions of 446 syslog truncate the rest of the line after newlines. 447 Suggested by Fletcher Mattox of U. Texas. 448 Move up forking for job runs so that if a message is split into 449 multiple envelopes you don't get "fork storms" -- this 450 also improves the connection cache utilization. 451 Accept "<<>>", "<<<>>>", and so forth as equivalent to "<>" for 452 the purposes of refusing to send error returns. Suggested 453 by Motonori Nakamura of Ritsumeikan University. 454 Relax rules on when a file can be written when referenced from 455 the aliases file: use the default uid/gid instead of the 456 real uid/gid. This allows you to create a file owned by 457 and writable only by the default uid/gid that will work 458 all the time (without having the setuid bit set). Change 459 suggested by Shau-Ping Lo and Andrew Cheng of Sun 460 Microsystems. 461 Add "DialDelay" option (no short name) to provide an "extra" 462 delay for dial on demand systems. If this is non-zero 463 and a connect fails, sendmail will wait this long and 464 then try again. If it takes longer than the kernel 465 timeout interval to establish the connection, this 466 option can give the network software time to establish 467 the link. The default units are seconds. 468 Move logging of sender information to be as early as possible; 469 previously, it could be delayed a while for SMTP mail 470 sent to aliases. Suggested by Brad Knowles of the 471 Defense Information Systems Agency. 472 Call res_init() before setting RES_DEBUG; this is required by 473 BIND 4.9.3, or so I'm told. From Douglas Anderson of 474 the National Computer Security Center. 475 Add xdelay= field in logs -- this is a transaction delay, telling 476 you how long it took to deliver to this address on the 477 last try. It is intended to be used for sorting mailing 478 lists to favor "quick" addresses. Provided for use by 479 the mailprio scripts (see below). 480 If a map cannot be opened, and that map is non-optional, and 481 an address requires that map for resolution, queue the 482 map instead of bouncing it. This involves creating a 483 pseudo-class of maps called "bogus-map" -- if a required 484 map cannot be opened, the class is changed to bogus-map; 485 all queries against bogus-map return "tempfail". The 486 bogus-map class is not directly accessible. A sample 487 implementation was donated by Jem Taylor of Glasgow 488 University Computing Service. 489 Don't make a bad ``MAIL FROM:'' address on one message blow away 490 other messages to the same host later in the queue. 491 Problem noted by Eric Prestemon of American University. 492 Fix a possible core dump when mailing to a program that talks 493 SMTP on its standard input. Fix from Keith Moore of 494 the University of Kentucky. 495 Make it possible to resolve filenames to $#local $: @ /filename; 496 previously, the "@" would cause it to not be recognized 497 as a file. Problem noted by Brian Hill of U.C. Davis. 498 Accept a -1 signal to re-exec the daemon. This only works if 499 argv[0] is a full path to sendmail. 500 Fix bug in "addr=..." field in O option on little-endian machines 501 -- the network number wasn't being converted to network 502 byte order. Patch from Kurt Lidl of Pix Technologies 503 Corporation. 504 Pre-initialize the resolver early on; this is to avoid a bug with 505 BIND 4.9.3 that can cause the _res.retry field to get 506 reset to zero, causing all name server lookups to time 507 out. Fix from Matt Day of Artisoft. 508 Restore T line (trusted users) in config file -- but instead of 509 locking out the -f flag, they just tell whether or not 510 an X-Authentication-Warning: will be added. This really 511 just creates new entries in class 't', so "Ft/file/name" 512 can be used to read trusted user names from a file. 513 Improve NEWDB alias file rebuilding so it will create them 514 properly if they do not already exist. This had been 515 a MAYBENEXTRELEASE feature in 8.6.9. 516 Check for @:@ entry in NIS maps before starting up to avoid 517 (but not prevent, sigh) race conditions. This ought to 518 be handled properly in ypserv, but isn't. Suggested by 519 Michael Beirne of Motorola. 520 Refuse connections if there isn't enough space on the filesystem 521 holding the queue. Contributed by Robert Dana of Wolf 522 Communications. 523 Skip checking for directory permissions in the path to a file 524 when checking for file permissions iff setreuid() 525 succeeded -- it is unnecessary in that case. This avoids 526 significant performance problems when looking for .forward 527 files. Based on a suggestion by Win Bent of USC. 528 Allow symbolic ruleset names. Syntax can be "Sname" to get an 529 arbitrary ruleset number assigned or "Sname = integer" 530 to assign a specific ruleset number. Reference is 531 $>name_or_number. Names can be composed of alphas, digits, 532 underscore, or hyphen (first character must be non-numeric). 533 Allow -o flag on AliasFile lines to make the alias file optional. 534 From Bryan Costales of ICSI. 535 Add NoRecipientAction option to handle the case where there is 536 no legal recipient header in the message. It can take 537 on values: 538 None Leave the message as is. The 539 message will be passed on even 540 though it is in technically 541 illegal syntax. 542 Add-To Add a To: header with any 543 recipients that it can find from 544 the envelope. This risks exposing 545 Bcc: recipients. 546 Add-Apparently-To Add an Apparently-To: header. This 547 has almost no redeeming social value, 548 and is provided only for back 549 compatibility. 550 Add-To-Undisclosed Add a header reading 551 To: undisclosed-recipients:; 552 which will have the effect of 553 making the message legal without 554 exposing Bcc: recipients. 555 Add-Bcc To add an empty Bcc: header. 556 There is a chance that mailers down 557 the line will delete this header, 558 which could cause exposure of Bcc: 559 recipients. 560 The default is NoRecipientAction=None. 561 Truncate (rather than delete) Bcc: lines in the header. This 562 should prevent later sendmails (at least, those that don't 563 themselves delete Bcc:) from considering this message to 564 be non-conforming -- although it does imply that non-blind 565 recipients can see that a Bcc: was sent, albeit not to whom. 566 Add SafeFileEnvironment option. If declared, files named as delivery 567 targets must be regular files in addition to the regular 568 checks. Also, if the option is non-null then it is used as 569 the name of a directory that is used as a chroot(2) 570 environment for the delivery; the file names listed in an 571 alias or forward should include the name of this root. 572 For example, if you run with 573 O SafeFileEnvironment=/arch 574 then aliases should reference "/arch/rest/of/path". If a 575 value is given, sendmail also won't try to save to 576 /usr/tmp/dead.letter (instead it just leaves the job in the 577 queue as Qfxxxxxx). Inspired by *Hobbit*'s sendmail patch kit. 578 Support -A flag for alias files; this will comma concatenate like 579 entries. For example, given the aliases: 580 list: member1 581 list: member2 582 and an alias file declared as: 583 OAhash:-A /etc/aliases 584 the final alias inserted will be "list: member1,member2"; 585 without -A you will get an error on the second and subsequent 586 alias for "list". Contributed by Bryan Costales of ICSI. 587 Line-buffer transcript file. Suggested by Liudvikas Bukys. 588 Fix a problem that could cause very long addresses to core dump in 589 some special circumstances. Problem pointed out by Allan 590 Johannesen. 591 (Internal change.) Change interface to expand() (macro expansion) 592 to be simpler and more consistent. 593 Delete check for funny qf file names. This didn't really give 594 any extra security and caused some people some problems. 595 (If you -really- want this, define PICKY_QF_NAME_CHECK 596 at compile time.) Suggested by Kyle Jones of UUNET. 597 (Internal change.) Change EF_NORETURN to EF_NO_BODY_RETN and 598 merge with DSN code; this is simpler and more consistent. 599 This may affect some people who have written their own 600 checkcompat() routine. 601 (Internal change.) Eliminate `D' line in qf file. The df file 602 is now assumed to be the same name as the qf file (with 603 the `q' changed to a `d', of course). 604 Avoid forking for delivery if all recipient mailers are marked as 605 "expensive" -- this can be a major cost on some systems. 606 Essentially, this forces sendmail into "queue only" mode 607 if all it is going to do is queue anyway. 608 Avoid sending a null message in some rather unusual circumstances 609 (specifically, the RCPT command returns a temporary 610 failure but the connection is lost before the DATA 611 command). Fix from Scott Hammond of Secure Computing 612 Corporation. 613 Change makesendmail to use a somewhat more rational naming scheme: 614 Makefiles and obj directories are named $os.$rel.$arch, 615 where $os is the operating system (e.g., SunOS), $rel is 616 the release number (e.g., 5.3), and $arch is the machine 617 architecture (e.g., sun4). Any of these can be omitted, 618 and anything after the first dot in a release number can 619 be replaced with "x" (e.g., SunOS.4.x.sun4). The previous 620 version used $os.$arch.$rel and was rather less general. 621 Ignore IDENT return value if the OSTYPE field returns "OTHER", 622 as indicated by RFC 1413. Pointed out by Kari Hurtta 623 of the Finnish Meteorological Institute. 624 Fix problem that could cause multiple responses to DATA command 625 on header syntax errors (e.g., lines beginning with colons). 626 Problem noted by Jens Thomassen of the University of Oslo. 627 Don't let null bytes in headers cause truncation of the rest of 628 the header. 629 Log Authentication-Warning:s. Suggested by Motonori Nakamura. 630 Increase timeouts on message data puts to allow time for receivers 631 to canonify addresses in headers on the fly. This is still 632 a rather ugly heuristic. From Motonori Nakamura. 633 Add "HasWildcardMX" suboption to ResolverOptions; if set, MX 634 records are not used when canonifying names. This is 635 useful if you have a wildcard MX record, although it 636 may cause other problems. In general, don't use wildcard 637 MX records. Patch from Motonori Nakamura. 638 Eliminate default two-line SMTP greeting message. Instead of 639 adding an extra "ESMTP spoken here" line, the word "ESMTP" 640 is added between the first and second word of the first 641 line of the greeting message (i.e., immediately after the 642 host name). This eliminates the need for the BROKEN_SMTP_PEERS 643 compile flag. Old sendmails won't see the ESMTP, but that's 644 acceptable because SIZE was the only useful extension that 645 old sendmails understand. 646 Avoid gethostbyname calls on UNIX domain sockets during SIGUSR1 647 invoked state dumps. From Masaharu Onishi. 648 Allow on-line comments in .forward and :include: files; they are 649 introduced by the string "<LWSP>#@#<LWSP>", where <LWSP> 650 is a space or a tab. This is intended for native 651 representation of non-ASCII sets such as Japanese, where 652 existing encodings would be unreadable or would lose 653 data -- for example, 654 <motonori@cs.ritsumei.ac.jp> NAKAMURA Motonori 655 (romanized/less information) 656 <motonori@cs.ritsumei.ac.jp> =?ISO-2022-JP?B?GyRCQ2ZCPBsoQg==?= 657 =?ISO-2022-JP?B?GyRCQUdFNRsoQg==?= 658 (with MIME encoding, not human readable) 659 <motonori@cs.ritsumei.ac.jp> #@# ^[$BCfB<^[(B ^[$BAGE5^[(B 660 (native encoding with ISO-2022-JP) 661 The last form is human readable in the Japanese environment. 662 Based on a fix from (surprise!) Motonori Nakamura. 663 Don't make SMTP error returns on MAIL FROM: line be "sticky" for all 664 messages to that host; these are most frequently associated 665 with addresses rather than the host, with the exception of 666 421 (service shutting down). The effect was to cause queues 667 to sometimes take an excessive time to flush. Reported by 668 Robert Sargent of Southern Geographics Technologies. 669 Add Nice=N mailer option to set the niceness at which a mailer will 670 run. 671 When looking for a default config file (that is, not specified using 672 a -C flag), try a configuration file name extended by the 673 binary version number -- e.g., sendmail.8.7.Alpha.9.cf, 674 sendmail.8.7.Alpha.cf, sendmail.8.7.cf, sendmail.8.cf, and 675 sendmail.cf in that order. This should make it easier to 676 test new versions in a shared environment. 677 Log queue runs that are skipped due to high loads. They are logged 678 at LOG_INFO priority iff the log level is > 8. Contributed 679 by Bruce Nagel of Data General. 680 Allow the error mailer to accept a DSN-style error status code 681 instead of an sysexits status code in the host part. 682 Anything with a dot will be interpreted as a DSN-style code. 683 Add new mailer flag: F=3 will tell translations to Quoted-Printable 684 to encode characters that might be munged by an EBCDIC system 685 in addition to the set required by RFC 1521. The additional 686 characters are !, ", #, $, @, [, \, ], ^, `, {, |, }, and ~. 687 (Think of "IBM 360" as the mnemonic for this flag.) 688 Change check for mailing to files to look for a pathname of [FILE] 689 rather than looking for the mailer named *file*. The mapping 690 of leading slashes still goes to the *file* mailer. This 691 allows you to implement the *file* mailer as a separate 692 program, for example, to insert a Content-Length: header 693 or do special security policy. However, note that the usual 694 initial checking for the file permissions is still done, and 695 the program in question needs to be very careful about how 696 it does the file write to avoid security problems. 697 Be able to read ~root/.forward even if the path isn't accessible to 698 regular users. This is disrecommended because sendmail 699 sometimes does not run as root (e.g., when an unsafe option 700 is specified on the command line), but should otherwise be 701 safe because .forward files must be owned by the user for 702 whom mail is being forwarded, and cannot be a symbolic link. 703 Suggested by Forrest Aldrich of Wang Laboratories. 704 Add new "HostsFile" option that is the pathname to the /etc/hosts 705 file. This is used for canonifying hostnames when the 706 service type is "files". 707 Implement programs on F (read class from file) line. The syntax is 708 Fc|/path/to/program to read the output from the program 709 into class "c". 710 Probe the network interfaces to find alternate names for this 711 host. Requires the SIOCGIFCONF ioctl call. Code 712 contributed by SunSoft. 713 Add "E" configuration line to set or propogate environment 714 variables into children. "E<envar>" will propogate 715 the named variable from the environment when sendmail 716 was invoked into any children it calls; "E<envar>=<value>" 717 sets the named variable to the indicated value. Any 718 variables not explicitly named will not be in the child 719 environment. However, sendmail still forces an 720 "AGENT=sendmail" environment variable, in part to enforce 721 at least one environment variable, since many programs and 722 libraries die horribly if this is not guaranteed. 723 Change heuristic for rebuilding both NEWDB and NDBM versions of 724 alias databases -- new algorithm looks for the substring 725 "/yp/" in the file name. This is more portable and involves 726 less overhead. Suggested by Motonori Nakamura. 727 PORTABILITY FIXES: 728 Solaris 2 from Rob McMahon <cudcv@csv.warwick.ac.uk>. 729 System V Release 4 from Motonori Nakamura of Ritsumeikan 730 University. This expands the disk size 731 checking to include all (?) SVR4 configurations. 732 System V Release 4 from Kimmo Suominen -- initgroups(3) 733 and setrlimit(2) are both available. 734 System V Release 4 from sob@sculley.ffg.com -- some versions 735 apparently "have EX_OK defined in other headerfiles." 736 Linux Makefile typo. 737 Linux getusershell(3) is broken in Slackware 2.0 -- 738 from Andrew Pam of Xanadu Australia. 739 More Linux tweaking from John Kennedy of California State 740 University, Chico. 741 Cray changes from Eric Wassenaar: ``On Cray, shorts, 742 ints, and longs are all 64 bits, and all structs 743 are multiples of 64 bits. This means that the 744 sizeof operator returns only multiples of 8. 745 This requires adaptation of code that really 746 deals with 32 bit or 16 bit fields, such as IP 747 addresses or nameserver fields.'' 748 DG/UX 5.4.3 from Mark T. Robinson <mtr@ornl.gov>. To 749 get the old behaviour, use -DDGUX_5_4_2. 750 DG/UX hack: add _FORCE_MAIL_LOCAL_=yes environment 751 variable to fix bogus /bin/mail behaviour. 752 Tandem NonStop-UX from Rick McCarty <mccarty@mpd.tandem.com>. 753 This also cleans up some System V Release 4 compile 754 problems. 755 Solaris 2: sendmail.cw file should be in /etc/mail to 756 match all the other configuration files. Fix 757 from Glenn Barry of Emory University. 758 Solaris 2.3: compile problem in conf.c. Fix from Alain 759 Nissen of the University of Liege, Belgium. 760 Ultrix: freespace calculation was incorrect. Fix from 761 Takashi Kizu of Osaka University. 762 SVR4: running in background gets a SIGTTOU because the 763 emulation code doesn't realize that "getpeername" 764 doesn't require reading the file. Fix from Peter 765 Wemm of DIALix. 766 Solaris 2.3: due to an apparent bug in the socket emulation 767 library, sockets can get into a "wedged" state where 768 they just return EPROTO; closing and re-opening the 769 socket clears the problem. Fix from Bob Manson 770 of Ohio State University. 771 Hitachi 3050R & 3050RX running HI-UX/WE2: portability 772 fixes from Akihiro Hashimoto ("Hash") of Chiba 773 University. 774 AIX changes to allow setproctitle to work from Rainer Sch�pf 775 of Zentrum f�r Datenverarbeitung der Universit�t 776 Mainz. 777 SCO Unix from Chip Rosenthal of Unicom (code was using the 778 wrong statfs call). 779 ANSI C fixes from Adam Glass (NetBSD project). 780 Stardent Titan/ANSI C fixes from Kate Hedstrom of Rutgers 781 University. 782 DG-UX fixes from Bruce Nagel of Data General. 783 IRIX64 updates from Mark Levinson of the University of 784 Rochester Medical Center. 785 Altos System V (``the first UNIX/XENIX merge the Altos 786 did for their Series 1000 & Series 2000 line; 787 their merged code was licenced back to AT&T and 788 Microsoft and became System V release 3.2'') from 789 Tim Rice <timr@crl.com>. 790 OSF/1 running on Intel Paragon from Jeff A. Earickson 791 <jeff@ssd.intel.com> of Intel Scalable Systems 792 Divison. 793 Amdahl UTS System V 2.1.5 (SVr3-based) from Janet Jackson 794 <janet@dialix.oz.au>. 795 System V Release 4 (statvfs semantic fix) from Alain 796 Durand of I.M.A.G. 797 HP-UX 10.x multiprocessor load average changes from 798 Scott Hutton and Jeff Sumler of Indiana University. 799 Cray CSOS from Scott Bolte of Cray Computer Corporation. 800 Unicos 8.0 from Douglas K. Rand of the University of North 801 Dakota, Scientific Computing Center. 802 Solaris 2.4 fixes from Sanjay Dani of Dani Communications. 803 ConvexOS 11.0 from Christophe Wolfhugel. 804 IRIX 4.0.5 from David Ashton-Reader of CADcentre. 805 ISC UNIX from J. J. Bailey. 806 HP-UX 9.xx on the 8xx series machines from Remy Giraud 807 of Meteo France. 808 HP-UX configuration from Tom Lane <tgl@sss.pgh.pa.us>. 809 IRIX 5.2 and 5.3 from Kari E. Hurtta. 810 FreeBSD 2.0 from Mike Hickey of Federal Data Corporation. 811 Sony NEWS-OS 4.2.1R and 6.0.3 from Motonori Nakamura. 812 Omron LUNA unios-b, mach from Motonori Nakamura. 813 NEC EWS-UX/V 4.2 from Motonori Nakamura. 814 NeXT 2.1 from Bryan Costales. 815 AUX patch thanks to Mike Erwin of Apple Computer. 816 HP-UX 10.0 from John Beck of Hewlett-Packard. 817 Ultrix: allow -DBROKEN_RES_SEARCH=0 if you are using a 818 non-DEC resolver. Suggested by Allan Johannesen. 819 MAKEMAP: allow -d flag to allow insertion of duplicate aliases 820 in type ``btree'' maps. The semantics of this are undefined 821 for regular maps, but it can be useful for the user database. 822 MAKEMAP: lock database file while rebuilding to avoid sendmail 823 lookups while the rebuild is going on. There is a race 824 condition between the open(... O_TRUNC ...) and the lock 825 on the file, but it should be quite small. 826 SMRSH: sendmail restricted shell added to the release. This can 827 be used as an alternative to /bin/sh for the "prog" mailer, 828 giving the local administrator more control over what 829 programs can be run from sendmail. 830 CONTRIB: a patch to rmail.c from Bill Gianopoulos of Raytheon 831 to allow rmail to compile on systems that don't have 832 function prototypes and systems that don't have snprintf. 833 CONTRIB: add the "mailprio" scripts that will help you sort mailing 834 lists by transaction delay times so that addresses that 835 respond quickly get sent first. This is to prevent very 836 sluggish servers from delaying other peoples' mail. 837 Contributed by Tony Sanders of BSDI. 838 CONTRIB: add the "bsdi.mc" file as contributed by Tony Sanders 839 of BSDI. This has a lot of comments to help people out. 840 CONFIG: fix mail from <> so it will properly convert to 841 MAILER-DAEMON on local addresses. 842 CONFIG: fix code that was supposed to catch colons in host 843 names. Problem noted by John Gardiner Myers of CMU. 844 CONFIG: allow use of SMTP_MAILER_MAX in nullclient configuration. 845 From Paul Riddle of the University of Maryland, Baltimore 846 County. 847 CONFIG: Catch and reject "." as a host address. 848 CONFIG: Generalize domaintable to look up all domains, not 849 just unqualified ones. 850 CONFIG: Delete OLD_SENDMAIL support -- as near as I can tell, it 851 was never used and didn't work anyway. 852 CONFIG: Set flags A, w, 5, :, /, |, and @ on the "local" mailer 853 and d on all mailers in the UUCP class. 854 CONFIG: Allow "user+detail" to be aliased specially: it will first 855 look for an alias for "user+detail", then for "user+*", and 856 finally for "user". This is intended for forwarding mail 857 for system aliases such as root and postmaster to a 858 centralized hub. 859 CONFIG: add confEIGHT_BIT_HANDLING to set option 8 (see above). 860 CONFIG: add smtp8 mailer; this has the F=8 (just-send-8) flag set. 861 The F=8 flag is also set on the "relay" mailer, since 862 this is expected to be another sendmail. 863 CONFIG: avoid qualifying all UUCP addresses sent via SMTP with 864 the name of the UUCP_RELAY -- in some cases, this is the 865 wrong value (e.g., when we have local UUCP connections), 866 and this can create unreplyable addresses. From Chip 867 Rosenthal of Unicom. 868 CONFIG: add confRECEIVED_HEADER to change the format of the 869 Received: header inserted into all messages. Suggested by 870 Gary Mills of the University of Manitoba. 871 CONFIG: Make "notsticky" the default; use FEATURE(stickyhost) 872 to get the old behaviour. I did this upon observing 873 that almost everyone needed this feature, and that the 874 concept I was trying to make happen didn't work with 875 some user agents anyway. FEATURE(notsticky) still works, 876 but it is a no-op. 877 CONFIG: Add LUSER_RELAY -- the host to which unrecognized user 878 names are sent, rather than immediately diagnosing them 879 as User Unknown. 880 CONFIG: Add SMTP_MAILER_ARGS, ESMTP_MAILER_ARGS, SMTP8_MAILER_ARGS, 881 and RELAY_MAILER_ARGS to set the arguments for the 882 indicated mailers. All default to "IPC $h". Patch from 883 Larry Parmelee of Cornell University. 884 CONFIG: pop mailer needs F=n flag to avoid "annoying side effects 885 on the client side" and F=P to get an appropriate 886 return-path. From Kimmo Suominen. 887 CONFIG: add FEATURE(local_procmail) to use the procmail program 888 as the local mailer. For addresses of the form "user+detail" 889 the "detail" part is passed to procmail via the -a flag. 890 Contributed by Kimmo Suominen. 891 CONFIG: add MAILER(procmail) to add an interface to procmail for 892 use from mailertables. This lets you execute arbitrary 893 procmail scripts. Contributed by Kimmo Suominen. 894 CONFIG: add T= fields (MTS type) to local, smtp, and uucp mailers. 895 CONFIG: add OSTYPE(ptx2) for DYNIX/ptx 2.x from Sequent. From 896 Paul Southworth of CICNet Systems Support. 897 CONFIG: use -a$g as default to UUCP mailers, instead of -a$f. 898 This causes the null return path to be rewritten as 899 MAILER-DAEMON; otherwise UUCP gets horribly confused. 900 From Michael Hohmuth of Technische Universitat Dresden. 901 CONFIG: Add FEATURE(bestmx_is_local) to cause any hosts that 902 list us as the best possible MX record to be treated as 903 though they were local (essentially, assume that they 904 are included in $=w). This can cause additional DNS 905 traffic, but is easier to administer if this fits your 906 local model. It does not work reliably if there are 907 multiple hosts that share the best MX preference. 908 Code contributed by John Oleynick of Rutgers. 909 CONFIG: Add FEATURE(smrsh) to use smrsh (the SendMail Restricted 910 SHell) instead of /bin/sh as the program used for delivery 911 to programs. If an argument is included, it is used as 912 the path to smrsh; otherwise, /usr/local/etc/smrsh is 913 assumed. 914 CONFIG: Add LOCAL_MAILER_MAX and PROCMAILER_MAILER_MAX to limit the 915 size of messages to the local and procmail mailers 916 respectively. Contributed by Brad Knowles of the Defense 917 Information Systems Agency. 918 CONFIG: Handle leading ``phrase:'' and trailing ``;'' as comments 919 (just like text outside of angle brackets) in order to 920 properly deal with ``group: addr1, ... addrN;'' syntax. 921 CONFIG: Require OSTYPE macro (the defaults really don't apply to 922 any real systems any more) and tweak the DOMAIN macro 923 so that it is less likely that users will accidently use 924 the Berkeley defaults. Also, create some generic files 925 that really can be used in the real world. 926 CONFIG: Add new configuration macros to set character sets for 927 messages _arriving from_ various mailers: LOCAL_MAILER_CHARSET, 928 SMTP_MAILER_CHARSET, and UUCP_MAILER_CHARSET. 929 CONFIG: Change UUCP_MAX_SIZE to UUCP_MAILER_MAX for consistency. 930 The old name will still be accepted for a while at least. 931 CONFIG: Implement DECNET_RELAY as spec for host to which DECNET 932 mail (.DECNET pseudo-domain or node::user) will be sent. 933 As with all relays, it can be ``mailer:hostname''. Suggested 934 by Scott Hutton. 935 CONFIG: Add MAILER(mail11) to get DECnet support. Code contributed 936 by Barb Dijker of Labyrinth Computer Services. 937 CONFIG: change confCHECK_ALIASES to default to False -- it has poor 938 performance for large alias files, and this confused many 939 people. 940 NEW FILES: 941 cf/cf/cs-hpux10.mc 942 cf/cf/cs-solaris2.mc 943 cf/cf/generic-hpux10.mc 944 cf/cf/generic-hpux9.mc 945 cf/cf/generic-osf1.mc 946 cf/cf/generic-solaris2.mc 947 cf/cf/generic-sunos4.1.mc 948 cf/cf/generic-ultrix4.mc 949 cf/cf/huginn.cs.mc 950 cf/domain/berkeley-only.m4 951 cf/domain/generic.m4 952 cf/feature/bestmx_is_local.m4 953 cf/feature/local_procmail.m4 954 cf/feature/smrsh.m4 955 cf/feature/stickydomain.m4 956 cf/mailer/mail11.m4 957 cf/mailer/procmail.m4 958 cf/ostype/amdahl-uts.m4 959 cf/ostype/hpux10.m4 960 cf/ostype/ptx2.m4 961 cf/ostype/unknown.m4 962 contrib/bsdi.mc 963 contrib/mailprio 964 contrib/rmail.oldsys.patch 965 smrsh/README 966 smrsh/smrsh.8 967 smrsh/smrsh.c 968 src/Makefiles/Makefile.CSOS 969 src/Makefiles/Makefile.EWS-UX_V 970 src/Makefiles/Makefile.IRIX.5.x 971 src/Makefiles/Makefile.IRIX64 972 src/Makefiles/Makefile.ISC 973 src/Makefiles/Makefile.NEWS-OS.4.x 974 src/Makefiles/Makefile.NEWS-OS.6.x 975 src/Makefiles/Makefile.NonStop-UX 976 src/Makefiles/Makefile.Paragon 977 src/Makefiles/Makefile.SunOS.5.3 978 src/Makefiles/Makefile.SunOS.5.4 979 src/Makefiles/Makefile.UNIX_SV.4.2.i386 980 src/Makefiles/Makefile.uts.systemV 981 src/mime.c 982 test/t_seteuid.c 983 RENAMED FILES: 984 cf/cf/alpha.mc => cf/cf/s2k-osf1.mc 985 cf/cf/chez.mc => cf/cf/chez.cs.mc 986 cf/cf/hpux-cs-exposed.mc => cf/cf/cs-hpux9.mc 987 cf/cf/osf1-cs-exposed.mc => cf/cf/cs-osf1.mc 988 cf/cf/s2k.mc => cf/cf/s2k-ultrix4.mc 989 cf/cf/sunos4.1-cs-exposed.mc => cf/cf/cs-sunos4.1.mc 990 cf/cf/ultrix4.1-cs-exposed.mc => cf/cf/cs-ultrix4.mc 991 cf/cf/vangogh.mc => cf/cf/vangogh.cs.mc 992 cf/domain/Berkeley.m4 => cf/domain/Berkeley.EDU.m4 993 cf/domain/cs-exposed.m4 => cf/domain/CS.Berkeley.EDU.m4 994 cf/domain/eecs-hidden.m4 => cf/domain/EECS.Berkeley.EDU.m4 995 cf/domain/s2k.m4 => cf/domain/S2K.Berkeley.EDU.m4 996 cf/ostype/hpux.m4 => cf/ostype/hpux9.m4 997 cf/ostype/ultrix4.1.m4 => cf/ostype/ultrix4.m4 998 src/Makefile.* => src/Makefiles/Makefile.* 999 OBSOLETED FILES: 1000 cf/cf/cogsci.mc 1001 cf/cf/cs-exposed.mc 1002 cf/cf/cs-hidden.mc 1003 cf/cf/hpux-cs-hidden.mc 1004 cf/cf/knecht.mc 1005 cf/cf/osf1-cs-hidden.mc 1006 cf/cf/sunos3.5-cs-exposed.mc 1007 cf/cf/sunos3.5-cs-hidden.mc 1008 cf/cf/sunos4.1-cs-hidden.mc 1009 cf/cf/ultrix4.1-cs-hidden.mc 1010 cf/domain/cs-hidden.m4 1011 contrib/rcpt-streaming 1012 src/Makefiles/Makefile.SunOS.5.x 1013 10148.6.12/8.6.12 95/03/28 1015 Fix to IDENT code (it was getting the size of the reply buffer 1016 too small, so nothing was ever accepted). Fix from several 1017 people, including Allan Johannesen, Shane Castle of the 1018 Boulder County Information Services, and Jeff Smith of 1019 Warwick University (all arrived within a few hours of 1020 each other!). 1021 Fix a problem that could cause large jobs to run out of 1022 file descriptors on systems that use vfork() rather 1023 than fork(). 1024 10258.6.11/8.6.11 95/03/08 1026 The ``possible attack'' message would be logged more often 1027 than necessary if you are using Pine as a user agent. 1028 The wrong host would be reported in the ``possible attack'' 1029 message when attempted from IDENT. 1030 In some cases the syslog buffer could be overflowed when 1031 reporting the ``possible attack'' message. This can 1032 cause denial of service attacks. Truncate the message 1033 to 80 characters to prevent this problem. 1034 When reading the IDENT response a loop is needed around the 1035 read from the network to ensure that you don't get 1036 partial lines. 1037 Password entries without any shell listed (that is, a null 1038 shell) wouldn't match as "ok". Problem noted by 1039 Rob McMahon. 1040 When running BIND 4.9.x a problem could occur because the 1041 _res.options field is initialized differently than it 1042 was historically -- this requires that sendmail call 1043 res_init before it tweaks any bits. 1044 Fix an incompatibility in openxscript() between the file open mode 1045 and the stdio mode passed to fdopen. This caused UnixWare 1046 2.0 to have conniptions. Fix from Martin Sohnius of 1047 Novell Labs Europe. 1048 Fix problem with static linking of local getopt routine when 1049 using GNU's ld command. Fix from John Kennedy of 1050 Cal State Chico. 1051 It was possible to turn off privacy flags. Problem noted by 1052 *Hobbit*. 1053 Be more paranoid about writing files. Suggestions by *Hobbit* 1054 and Liudvikas Bukys. 1055 MAKEMAP: fixes for 64 bit machines (DEC Alphas in particular) 1056 from Spider Boardman. 1057 CONFIG: No changes (version number only, to keep it in sync 1058 with the binaries). 1059 10608.6.10/8.6.10 95/02/10 1061 SECURITY: Diagnose bogus values to some command line flags that 1062 could allow trash to get into headers and qf files. 1063 Validate the name of the user returned by the IDENT protocol. 1064 Some systems that really dislike IDENT send intentionally 1065 bogus information. Problem pointed out by Michael Bushnell 1066 of the Free Software Foundation. Has some security 1067 implications. 1068 Fix a problem causing error messages about DNS problems when 1069 the host name contained a percent sign to act oddly 1070 because it was passed as a printf-style format string. 1071 In some cases this could cause core dumps. 1072 Avoid possible buffer overrun in returntosender() if error 1073 message is quite ling. From Fletcher Mattox of the 1074 University of Texas. 1075 Fix a problem that would silently drop "too many hops" error 1076 messages if and only if you were sending to an alias. 1077 From Jon Giltner of the University of Colorado and 1078 Dan Harton of Oak Ridge National Laboratory. 1079 Fix a bug that caused core dumps on some systems if -d11.2 was 1080 set and e->e_message was null. Fix from Bruce Nagel of 1081 Data General. 1082 Fix problem that can still cause df files to be left around 1083 after "hop count exceeded" messages. Fix from Andrew 1084 Chang and Shau-Ping Lo of SunSoft. 1085 Fix a problem that can cause buffer overflows on very long 1086 user names (as might occur if you piped to a program 1087 with a lot of arguments). 1088 Avoid returning an error and re-queueing if the host signature 1089 is null; this can occur on addresses like ``user@.''. 1090 Problem noted by Wesley Craig and the University of 1091 Michigan. 1092 Avoid possible calls to malloc(0) if MCI caching is turned 1093 off. Bug fix from Pierre David of the Laboratoire 1094 Parallelisme, Reseaux, Systemes et Modelisation (PRiSM), 1095 Universite de Versailles - St Quentin, and Jacky 1096 Thibault. 1097 Make a local copy of the line being sent via senttolist() -- in 1098 some cases, buffers could get trashed by map lookups 1099 causing it to do unexpected things. This also simplifies 1100 some of the map code. 1101 CONFIG: No changes (version number only, to keep it in sync 1102 with the binaries). 1103 11048.6.9/8.6.9 94/04/19 1105 Do all mail delivery completely disconnected from any terminal. 1106 This provides consistency with daemon delivery and 1107 may have some security implications. 1108 Make sure that malloc doesn't get called with zero size, 1109 since that fails on some systems. Reported by Ed 1110 Hill of the University of Iowa. 1111 Fix multi-line values for $e (SMTP greeting message). Reported 1112 by Mike O'Connor of Ford Motor Company. 1113 Avoid syserr if no NIS domain name is defined, but the map it 1114 is trying to open is optional. From Win Bent of USC. 1115 Changes for picky compilers from Ed Gould of Digital Equipment. 1116 Hesiod support for UDB from Todd Miller of the University of 1117 Colorado. Use "hesiod" as the service name in the U 1118 option. 1119 Fix a problem that failed to set the "authentic" host name (that 1120 is, the one derived from the socket info) if you called 1121 sendmail -bs from inetd. Based on code contributed by 1122 Todd Miller (this problem was also reported by Guy Helmer 1123 of Dakota State University). This also fixes a related 1124 problem reported by Liudvikas Bukys of the University of 1125 Rochester. 1126 Parameterize "nroff -h" in all the Makefiles so people with 1127 variant versions can use them easily. Suggested by 1128 Peter Collinson of Hillside Systems. 1129 SMTP "MAIL" commands with multiple ESMTP parameters required two 1130 spaces between parameters instead of one. Reported by 1131 Valdis Kletnieks of Virginia Tech. 1132 Reduce the number of system calls during message collection by 1133 using global timeouts around the collect() loop. This 1134 code was contributed by Eric Wassenaar. 1135 If the initial hostname name gathering results in a name 1136 without a dot (usually caused by NIS misconfiguration) 1137 and BIND is compiled in, directly access DNS to get 1138 the canonical name. This should make life easier for 1139 Solaris systems. If it still can't be resolved, and 1140 if the name server is listed as "required", try again 1141 in 30 seconds. If that also fails, exit immediately to 1142 avoid bogus "config error: mail loops back to myself" 1143 messages. 1144 Improve the "MAIL DELETED BECAUSE OF LACK OF DISK SPACE" error 1145 message to explain how much space was available and 1146 sound a bit less threatening. Suggested by Stan Janet 1147 of the National Institute of Standards and Technology. 1148 If mail is delivered to an alias that has an owner, deliver any 1149 requested return-receipt immediately, and strip the 1150 Return-Receipt-To: header from the subsequent message. 1151 This prevents a certain class of denial of service 1152 attack, arguably gives more reasonable semantics, and 1153 moves things more towards what will probably become a 1154 network standard. Suggested by Christopher Davis of 1155 Kapor Enterprises. 1156 Add a "noreceipts" privacy flag to turn off all return receipts 1157 without recompiling. 1158 Avoid printing ESMTP parameters as part of the error message 1159 if there are errors during parsing. This change is 1160 purely cosmetic. 1161 Avoid sending out error messages during the collect phase of 1162 SMTP; there is an MVS mailer from UCLA that gets 1163 confused by this. Of course, I think it's their bug.... 1164 Check for the $j macro getting undefined, losing a dot, or getting 1165 lost from $=w in the daemon before accepting a connection; 1166 if it is, it dumps state, prints a LOG_ALERT message, 1167 and drops core for debugging. This is an attempt to 1168 track down a bug that I thought was long since gone. 1169 If you see this, please forward the log fragment to 1170 sendmail@CS.Berkeley.EDU. 1171 Change OLD_NEWDB from a #ifdef to a #if so it can be turned off 1172 with -DOLD_NEWDB=0 on the command line. From Christophe 1173 Wolfhugel. 1174 Instead of trying to truncate the listen queue for the server 1175 SMTP port when the load average is too high, just close 1176 the port completely and reopen it later as needed. 1177 This ensures that the other end gets a quick "connection 1178 refused" response, and that the connection can be 1179 recovered later. In particular, some socket emulations 1180 seem to get confused if you tweak the listen queue 1181 size around and can never start listening to connections 1182 again. The down side is that someone could start up 1183 another daemon process in the interim, so you could 1184 have multiple daemons all not listening to connections; 1185 this could in turn cause the sendmail.pid file to be 1186 incorrect. A better approach might be to accept the 1187 connection and give a 421 code, but that could break 1188 other mailers in mysterious ways and have paging behaviour 1189 implications. 1190 Fix a glitch in TCP-level debugging that caused flag 16.101 to 1191 set debugging on the wrong socket. From Eric Wassenaar. 1192 When creating a df* temporary file, be sure you truncate any 1193 existing data in the file -- otherwise system crashes 1194 and the like could result in extra data being sent. 1195 DOC: Replace the CHANGES-R5-R8 readme file with a paper in the 1196 doc directory. This includes some additional 1197 information. 1198 CONFIG: change UUCP rules to never add $U! or $k! on the front 1199 of recipient envelope addresses. This should have been 1200 handled by the $&h trick, but broke if people were 1201 mixing domainized and UUCP addresses. They should 1202 probably have converted all the way over to uucp-uudom 1203 instead of uucp-{new,old}, but the failure mode was to 1204 loop the mail, which was bad news. 1205 Portability fixes: 1206 Newer BSDI systems (several people). 1207 Older BSDI systems from Christophe Wolfhugel. 1208 Intergraph CLIX, from Paul Southworth of CICNet. 1209 UnixWare, from Evan Champion. 1210 NetBSD from Adam Glass. 1211 Solaris from Quentin Campbell of the University of 1212 Newcastle upon Tyne. 1213 IRIX from Dean Cookson and Bill Driscoll of Mitre 1214 Corporation. 1215 NCR 3000 from Kevin Darcy of Chrysler Financial Corporation. 1216 SunOS (it has setsid() and setvbuf() calls) from 1217 Jonathan Kamens of OpenVision Technologies. 1218 HP-UX from Tor Lillqvist. 1219 New Files: 1220 src/Makefile.CLIX 1221 src/Makefile.NCR3000 1222 doc/changes/Makefile 1223 doc/changes/changes.me 1224 doc/changes/changes.ps 1225 12268.6.8/8.6.6 94/03/21 1227 SECURITY: it was possible to read any file as root using the 1228 E (error message) option. Reported by Richard Jones; 1229 fixed by Michael Corrigan and Christophe Wolfhugel. 1230 12318.6.7/8.6.6 94/03/14 1232 SECURITY: it was possible to get root access by using wierd 1233 values to the -d flag. Thanks to Alain Durand of 1234 INRIA for forwarding me the notice from the bugtraq 1235 list. 1236 12378.6.6/8.6.6 94/03/13 1238 SECURITY: the ability to give files away on System V-based 1239 systems proved dangerous -- don't run as the owner 1240 of a :include: file on a system that allows giveaways. 1241 Unfortunately, this also applies to determining a 1242 valid shell. 1243 IMPORTANT: Previous versions weren't expiring old connections 1244 in the connection cache for a long time under some 1245 circumstances. This could result in resource exhaustion, 1246 both at your end and at the other end. This checks the 1247 connections for timeouts much more frequently. From 1248 Doug Anderson of NCSC. 1249 Fix a glitch that snuck in that caused programs to be run as 1250 the sender instead of the recipient if the mail was 1251 from a local user to another local user. From 1252 Motonori Nakamura of Kyoto University. 1253 Fix "wildcard" on /etc/shell matching -- instead of looking 1254 for "*", look for "/SENDMAIL/ANY/SHELL/". From 1255 Bryan Costales of ICSI. 1256 Change the method used to declare the "statfs" availability; 1257 instead of HASSTATFS and/or HASUSTAT with a ton of 1258 tweaking in conf.c, there is a single #define called 1259 SFS_TYPE which takes on one of six values (SFS_NONE 1260 for no statfs availability, SFS_USTAT for the ustat(2) 1261 syscall, SFS_4ARGS for a four argument statfs(2) call, 1262 and SFS_VFS, SFS_MOUNT, or SFS_STATFS for a two argument 1263 statfs(2) call with the declarations in <sys/vfs.h>, 1264 <sys/mount.h>, or <sys/statfs.h> respectively). 1265 Fix glitch in NetInfo support that could return garbage if 1266 there was no "/locations/sendmail" property. From 1267 David Meyer of the University of Virginia. 1268 Change HASFLOCK from defined/not-defined to a 0/1 definition 1269 to allow Linux to turn it off even though it is a 1270 BSD-like system. 1271 Allow setting of "ident" timeout to zero to turn off the ident 1272 protocol entirely. 1273 Make 7-bit stripping local to a connection (instead of to a 1274 mailer); this allows you to specify that SMTP is a 1275 7-bit channel, but revert to 8-bit should it advertise 1276 that it supports 8BITMIME. You still have to specify 1277 mailer flag 7 to get this stripping at all. 1278 Improve makesendmail script so it handles more cases automatically. 1279 Tighten up restrictions on taking ownership of :include: files 1280 to avoid problems on systems that allow you to give away 1281 files. 1282 Fix a problem that made it impossible to rebuild the alias 1283 file if it was on a read-only file system. From 1284 Harry Edmon of the University of Washington. 1285 Improve MX randomization function. From John Gardiner Myers 1286 of CMU. 1287 Fix a minor glitch causing a bogus message to be printed (used 1288 %s instead of %d in a printf string for the line number) 1289 when a bad queue file was read. From Harry Edmon. 1290 Allow $s to remain NULL on locally generated mail. I'm not 1291 sure this is necessary, but a lot of people have complained 1292 about it, and there is a legitimate question as to whether 1293 "localhost" is legal as an 822-style domain. 1294 Fix a problem with very short line lengths (mailer L= flag) in 1295 headers. This causes a leading space to be added onto 1296 continuation lines (including in the body!), and also 1297 tries to wrap headers containing addresses (From:, To:, 1298 etc) intelligently at the shorter line lengths. Problem 1299 Reported by Lars-Johan Liman of SUNET Operations Center. 1300 Log the real user name when logging syserrs, since these can have 1301 security implications. Suggested by several people. 1302 Fix address logging of cached connections -- it used to always 1303 log the numeric address as zero. This is a somewhat 1304 bogus implementation in that it does an extra system 1305 call, but it should be an inexpensive one. Fix from 1306 Motonori Nakamura. 1307 Tighten up handling of short syslog buffers even more -- there 1308 were cases where the outgoing relay= name was too long 1309 to share a line with delay= and mailer= logging. 1310 Limit the overhead on split envelopes to one open file descriptor 1311 per envelope -- previously the overhead was three 1312 descriptors. This was in response to a problem reported 1313 by P{r (Pell) Emanuelsson. 1314 Fixes to better handle the case of unexpected connection closes; 1315 this redirects the output to the transcript so the info 1316 is not lost. From Eric Wassenaar. 1317 Fix potential string overrun if you macro evaluate a string that 1318 has a naked $ at the end. Problem noted by James Matheson 1319 <jmrm@eng.cam.ac.uk>. 1320 Make default error number on $#error messages 553 (``Requested 1321 action not taken: mailbox name not allowed'') instead of 1322 501 (``Syntax error in parameters or arguments'') to 1323 avoid bogus "protocol error" messages. 1324 Strip off any existing trailing dot on names during $[ ... $] 1325 lookup. This prevents it from ending up with two dots 1326 on the end of dot terminated names. From Wesley Craig 1327 of the University of Michigan and Bryan Costales of ICSI. 1328 Clean up file class reading so that the debugging information is 1329 more informative. It hadn't been using setclass, so you 1330 didn't see the class items being added. 1331 Avoid core dump if you are running a version of sendmail where 1332 NIS is compiled in, and you specify an NIS map, but 1333 NIS is not running. Fix from John Oleynick of 1334 Rutgers. 1335 Diagnose bizarre case where res_search returns a failure value, 1336 but sets h_errno to a success value. 1337 Make sure that "too many hops" messages are considered important 1338 enough to send an error to the Postmaster (that is, the 1339 address specified in the P option). This fix should 1340 help problems that cause the df file to be left around 1341 sometimes -- unfortunately, I can't seem to reproduce 1342 the problem myself. 1343 Avoid core dump (null pointer reference) on EXPN command; this 1344 only occurred if your log level was set to 10 or higher 1345 and the target account was an alias or had a .forward file. 1346 Problem noted by Janne Himanka. 1347 Avoid "denial of service" attacks by someone who is flooding your 1348 SMTP port with bad commands by shutting the connection 1349 after 25 bad commands are issued. From Kyle Jones of 1350 UUNET. 1351 Fix core dump on error messages with very long "to" buffers; 1352 fmtmsg overflows the message buffer. Fixed by trimming 1353 the to address to 203 characters. Problem reported by 1354 John Oleynick. 1355 Fix configuration for HASFLOCK -- there were some spots where 1356 a #ifndef was incorrectly #ifdef. Pointed out by 1357 George Baltz of the University of Maryland. 1358 Fix a typo in savemail() that could cause the error message To: 1359 lists to be incorrect in some places. From Motonori 1360 Nakamura. 1361 Fix a glitch that can cause duplicate error messages on split 1362 envelopes where an address on one of the lists has a 1363 name server failure. Fix from Voradesh Yenbut of the 1364 University of Washington. 1365 Fix possible bogus pointer reference on ESMTP parameters that 1366 don't have an ``=value'' part. 1367 CNAME loops caused an error message to be generated, but also 1368 re-queued the message. Changed to just re-queue the 1369 message (it's really hard to just bounce it because 1370 of the wierd way the name server works in the presence 1371 of CNAME loops). Problem noted by James M.R.Matheson 1372 of Cambridge University. 1373 Avoid giving ``warning: foo owned process doing -bs'' messages 1374 if they use ``MAIL FROM:<foo>'' where foo is their true 1375 user name. Suggested by Andreas Stolcke of ICSI. 1376 Change the NAMED_BIND compile flag to be a 0/1 flag so you can 1377 override it easily in the Makefile -- that is, you can 1378 turn it off using -DNAMED_BIND=0. 1379 If a gethostbyname(...) of an address with a trailing dot fails, 1380 try it without the trailing dot. This is because if 1381 you have a version of gethostbyname() that falls back 1382 to NIS or the /etc/hosts file it will fail to find 1383 perfectly reasonable names that just don't happen to 1384 be dot terminated in the hosts file. You don't want to 1385 strip the dot first though because we're trying to ensure 1386 that country names that match one of your subdomains get 1387 a chance. 1388 PRALIASES: fix bogus output on non-null-terminated strings. 1389 From Bill Gianopoulos of Raytheon. 1390 CONFIG: Avoid rewriting anything that matches $w to be $j. 1391 This was in code intended to only catch the self-literal 1392 address (that is, [1.2.3.4], where 1.2.3.4 is your 1393 IP address), but the code was broken. However, it will 1394 still do this if $M is defined; this is necessary to 1395 get client configurations to work (sigh). Note that this 1396 means that $M overrides :mailname entries in the user 1397 database! Problem noted by Paul Southworth. 1398 CONFIG: Fix definition of Solaris help file location. From 1399 Steve Cliffe <steve@gorgon.cs.uow.edu.au>. 1400 CONFIG: Fix bug that broke news.group.USENET mappings. 1401 CONFIG: Allow declaration of SMTP_MAILER_MAX, FAX_MAILER_MAX, 1402 and USENET_MAILER_MAX to tweak the maximum message 1403 size for various mailers. 1404 CONFIG: Change definition of USENET_MAILER_ARGS to include argv[0] 1405 instead of assuming that it is "inews" for consistency 1406 with other mailers. From Michael Corrigan of UC San Diego. 1407 CONFIG: When mail is forwarded to a LOCAL_RELAY or a MAIL_HUB, 1408 qualify the address in the SMTP envelope as user@{relay|hub} 1409 instead of user@$j. From Bill Wisner of The Well. 1410 CONFIG: Fix route-addr syntax in nullrelay configuration set. 1411 CONFIG: Don't turn off case mapping of user names in the local 1412 mailer for IRIX. This was different than most every other 1413 system. 1414 CONFIG: Avoid infinite loops on certainly list:; syntaxes in 1415 envelope. Noted by Thierry Besancon 1416 <besancon@excalibur.ens.fr>. 1417 CONFIG: Don't include -z by default on uux line -- most systems 1418 don't want it set by default. Pointed out by Philippe 1419 Michel of Thomson CSF. 1420 CONFIG: Fix some bugs with mailertables -- for example, if your 1421 host name was foo.bar.ray.com and you matched against 1422 ".ray.com", the old implementation bound %1 to "bar" 1423 instead of "foo.bar". Also, allow "." in the mailertable 1424 to match anything -- essentially, take over SMART_HOST. 1425 This also moves matching of explicit local host names 1426 before the mailertable so they don't have to be special 1427 cased in the mailertable data. Reported by Bill 1428 Gianopoulos of Raytheon; the fix for the %1 binding 1429 problem was contributed by Nicholas Comanos of the 1430 University of Sydney. 1431 CONFIG: Don't include "root" in class $=L (users to deliver 1432 locally, even if a hub or relay exists) by default. 1433 This is because of the known bug where definition of 1434 both a LOCAL_RELAY and a MAIL_HUB causes $=L to ignore 1435 both and deliver into the local mailbox. 1436 CONFIG: Move up bitdomain and uudomain handling so that they 1437 are done before .UUCP class matching; uudomain was 1438 reported as ineffective before. This also frees up 1439 diversion 8 for future use. Problem reported by Kimmo 1440 Suominen. 1441 CONFIG: Don't try to convert dotted IP address (e.g., [1.2.3.4]) 1442 into host names. As pointed out by Jonathan Kamens, 1443 these are often used because either the forward or reverse 1444 mapping is broken; this translation makes it broken again. 1445 DOC: Clarify $@ and $: in the Install & Op Guide. From Kimmo 1446 Suominen. 1447 Portability fixes: 1448 Unicos from David L. Kensiski of Sterling Sofware. 1449 DomainOS from Don Lewis of Silicon Systems. 1450 GNU m4 1.0.3 from Karst Koymans of Utrecht University. 1451 Convex from Kimmo Suominen <kim@tac.nyc.ny.us>. 1452 NetBSD from Adam Glass <glass@sun-lamp.cs.berkeley.edu>. 1453 BSD/386 from Tony Sanders of BSDI. 1454 Apollo from Eric Wassenaar. 1455 DGUX from Doug Anderson. 1456 Sequent DYNIX/ptx 2.0 from Tim Wright of Sequent. 1457 NEW FILES: 1458 src/Makefile.DomainOS 1459 src/Makefile.PTX 1460 src/Makefile.SunOS.5.1 1461 src/Makefile.SunOS.5.2 1462 src/Makefile.SunOS.5.x 1463 src/mailq.1 1464 cf/ostype/domainos.m4 1465 doc/op/Makefile 1466 doc/intro/Makefile 1467 doc/usenix/Makefile 1468 14698.6.5/8.6.5 94/01/13 1470 Security fix: /.forward could be owned by anyone (the test 1471 to allow root to own any file was backwards). From 1472 Bob Campbell at U.C. Berkeley. 1473 Security fix: group ids were not completely set when programs 1474 were invoked. This caused programs to have group 1475 permissions they should not have had (usually group 1476 daemon instead of their own group). In particular, 1477 Perl scripts would refuse to run. 1478 Security: check to make sure files that are written are not 1479 symbolic links (at least under some circumstances). 1480 Although this does not respond to a specific known 1481 attack, it's just a good idea. Suggested by 1482 Christian Wettergren. 1483 Security fix: if a user had an NFS mounted home directory on 1484 a system with a restricted shell listed in their 1485 /etc/passwd entry, they could still execute any 1486 program by putting that in their .forward file. 1487 This fix prevents that by insisting that their shell 1488 appear in /etc/shells before allowing a .forward to 1489 execute a program or write a file. You can disable 1490 this by putting "*" in /etc/shells. It also won't 1491 permit world-writable :include: files to reference 1492 programs or files (there's no way to disable this). 1493 These behaviours are only one level deep -- for 1494 example, it is legal for a world-writable :include: 1495 file to reference an alias that writes a file, on 1496 the assumption that the alias file is well controlled. 1497 Security fix: root was not treated suspiciously enough when 1498 looking into subdirectories. This would potentially 1499 allow a cracker to examine files that were publically 1500 readable but in a non-publically searchable directory. 1501 Fix a problem that causes an error on QUIT on a cached 1502 connection to create problems on the current job. 1503 These are typically unrelated, so errors occur in 1504 the wrong place. 1505 Reset CurrentLA in sendall() -- this makes sendmail queue 1506 runs more responsive to load average, and fixes a 1507 problem that ignored the load average in locally 1508 generated mail. From Eric Wassenaar. 1509 Fix possible core dump on aliases with null LHS. From 1510 John Orthoefer of BB&N. 1511 Revert to using flock() whenever possible -- there are just 1512 too many bugs in fcntl() locking, particularly over 1513 NFS, that cause sendmail to fail in perverse ways. 1514 Fix a bug that causes the connection cache to get confused 1515 when sending error messages. This resulted in 1516 "unexpected close" messages. It should fix itself 1517 on the following queue run. Problem noted by 1518 Liudvikas Bukys of the University of Rochester. 1519 Include $k in $=k as documented in the Install & Op Guide. 1520 This seems odd, but it was documented.... From 1521 Michael Corrigan of UCSD. 1522 Fix problem that caused :include:s from alias files to be 1523 forced to be owned by root instead of daemon 1524 (actually DefUid). From Tim Irvin. 1525 Diagnose unrecognized I option values -- from Mortin Forssen 1526 of the Chalmers University of Technology. 1527 Make "error" mailer work consistently when there is no error 1528 code associated with it -- previously it returned OK 1529 even though there was a real problem. Now it assumes 1530 EX_UNAVAILABLE. 1531 Fix bug that caused the last header line of messages that had 1532 no body and which were terminated with EOF instead of 1533 "." to be discarded. Problem noted by Liudvikas Bukys. 1534 Fix core dump on SMTP mail to programs that failed -- it tried 1535 to go to a "next MX host" when none existed, causing 1536 a core dump. From der Mouse at McGill University. 1537 Change IDENTPROTO from a defined/not defined to a 0/1 switch; 1538 this makes it easier to turn it off (using 1539 -DIDENTPROTO=0 in the Makefile). From der Mouse. 1540 Fix YP_MASTER_NAME store to use the unupdated result of 1541 gethostname() (instead of myhostname(), which tries 1542 to fully qualify the name) to be consistent with 1543 SunOS. If your hostname is unqualified, this fixes 1544 transfers to slave servers. Bug noted by Keith 1545 McMillan of Ameritech Services, Inc. 1546 Fix Ultrix problem: gethostbyname() can return a very large 1547 (> 500) h_length field, which causes the sockaddr 1548 to be trashed. Use the size of the sockaddr instead. 1549 Fix from Bob Manson of Ohio State. 1550 Don't assume "-a." on host lookups if NAMED_BIND is not 1551 defined -- this confuses gethostbyname on hosts 1552 file lookups, which doesn't understand the trailing 1553 dot convention. 1554 Log SMTP server subprocesses that die with a signal instead 1555 of from a clean exit. 1556 If you don't have option "I" set, don't assume that a DNS 1557 "host unknown" message is authoritative -- it 1558 might still be found in /etc/hosts. 1559 Fix a problem that would cause Deferred: messages to be sent 1560 as the subject of an error message, even though the 1561 actual cause of a message was more severe than that. 1562 Problem noted by Chris Seabrook of OSSI. 1563 Fix race condition in DBM alias file locking. From Kyle 1564 Jones of UUNET. 1565 Limit delivery syslog line length to avoid bugs in some 1566 versions of syslog(3). This adds a new compile time 1567 variable SYSLOG_BUFSIZE. From Jay Plett of Princeton 1568 University, which is in turn derived from IDA. 1569 Fix quotes inside of comments in addresses -- previously 1570 it insisted that they be balanced, but the 822 spec 1571 says that they should be ignored. 1572 Dump open file state to syslog upon receiving SIGUSR1 (for 1573 debugging). This also evaluates ruleset 89, if set 1574 (with the null input), and logs the result. This 1575 should be used sparingly, since the rewrite process 1576 is not reentrant. 1577 Change -qI, -qR, and -qS flags to be case-insensitive as 1578 documented in the Bat Book. 1579 If the mailer returned EX_IOERR or EX_OSERR, sendmail did not 1580 return an error message and did not requeue the message. 1581 Fix based on code from Roland Dirlewanger of 1582 Reseau Regional Aquarel, Bordeaux, France. 1583 Fix a problem that caused a seg fault if you got a 421 error 1584 code during some parts of connection initialization. 1585 I've only seen this when talking to buggy mailers on 1586 the other end, but it shouldn't give a seg fault in 1587 any case. From Amir Plivatsky. 1588 Fix core dump caused by a ruleset call that returns null. 1589 Fix from Bryan Costales of ICSI. 1590 Full-Name: field was being ignored. Fix from Motonori Nakamura 1591 of Kyoto University. 1592 Fix a possible problem with very long input lines in setproctitle. 1593 From P{r Emanuelsson. 1594 Avoid putting "This is a warning message" out on return receipts. 1595 Suggested by Douglas Anderson. 1596 Detect loops caused by recursive ruleset calls. Suggested by 1597 Bryan Costales. 1598 Initialize non-alias maps during alias rebuilds -- they may be 1599 needed for parsing. Problem noted by Douglas Anderson. 1600 Log sender address even if no message was collected in SMTP 1601 (e.g., if all RCPTs failed). Suggested by Motonori 1602 Nakamura. 1603 Don't reflect the owner-list contents into the envelope sender 1604 address if the value contains ", :, /, or | (to avoid 1605 illegal addresses appearing there). 1606 Efficiency hack for toktype macro -- from Craig Partridge of 1607 BB&N. 1608 Clean up DNS error printing so that a host name is always 1609 included. 1610 Remember to set $i during queue runs. Reported by Stephen 1611 Campbell of Dartmouth University. 1612 If ${HOSTALIASES} is set, use it during canonification so that 1613 headers are properly mapped. Reported by Anne Bennett 1614 of Concordia University. 1615 Avoid printing misleading error message if SMTP mailer (not 1616 using [IPC]) should die on a core dump. 1617 Avoid incorrect diagnosis of "file 1 closed" when it is caused 1618 by the other end closing the connection. From 1619 Dave Morrison of Oracle. 1620 Improve several of the error messages printed by "mailq" 1621 to include a host name or other useful information. 1622 Add NetInfo preliminary support for NeXT systems. From Vince 1623 DeMarco. 1624 Fix a glitch that sometimes caused :include:s that pointed to 1625 NFS filesystems that were down to give an "aliasing/ 1626 forwarding loop broken" message instead of queueing 1627 the message for retry. Noted by William C Fenner of 1628 the NRL Connection Machine Facility. 1629 Fix a problem that could cause a core dump if the input sequence 1630 had (or somehow acquired) a \231 character. 1631 Make sure that route-addrs always have <angle brackets> around 1632 them in non-SMTP envelopes (SMTP envelopes already do 1633 this properly). 1634 Avoid wierd headers on unbalanced punctuation of the form: 1635 ``Joe User <user)'' -- this caused reference to the 1636 null macro. Fix from Rick McCarty of IO.COM. 1637 Fix a problem that caused an alias "user: user@local.host" to 1638 not have the QNOTREMOTE bit set; this caused configs 1639 to act as if FEATURE(notsticky) was defined even when 1640 it was not. The effect of the problem was to make it 1641 very hard to to set up satellite sites that had a few 1642 local accounts, with everything else forwarded to a 1643 corporate hub. Reported by Detlef Drewanz of the 1644 University of Rostock and Mark Frost of NCD. 1645 Change queuing to not call rulesets 3, {1 or 2}, 4 on header 1646 addresses. This is more efficient (fewer name server 1647 calls) and fixes certain unusual configurations, such 1648 as those that have ruleset 4 do something that is 1649 non-idempotent unless a mailer-specific ruleset did 1650 something else. Problem reported by Brian J. Coan 1651 of the Institute for Global Communications. 1652 Fix the "obsolete argument" routine in main to better understand 1653 new arguments. For example, if you used ``sendmail 1654 -C config -v -q'' it would choke on the -q because 1655 the -C would stop looking for old-format arguments. 1656 Fix the code that was intended to allow two users to forward their 1657 mail to the same program and have them appear unique. 1658 Portability fixes for: 1659 SCO UNIX from Murray Kucherawy. 1660 SCO Open Server 3.2v4 from Philippe Brand. 1661 System V Release 4 from Rick Ellis and others. 1662 OSF/1 from Steve Campbell. 1663 DG/UX from Ben Mesander of the USGS and Bryan Curnutt 1664 of Stoner Associates. 1665 Motorola SysV88 from Kevin Johnson of Motorola. 1666 Solaris 2.3 from Casper H.S. Dik of the University 1667 of Amsterdam and John Caruso of University 1668 of Maryland. 1669 FreeBSD from Ollivier Robert. 1670 NetBSD from Adam Glass. 1671 TitanOS from Kate Hedstrom of Rutgers University. 1672 Irix from Bryan Curnutt. 1673 Dynix from Jim Davis of the University of Arizona. 1674 RISC/os. 1675 Linux from John Kennedy of California State University 1676 at Chico. 1677 Solaris 2.x from Tony Boner of the U.S. Air Force. 1678 NEXTSTEP 3.x from Vince DeMarco. 1679 HP-UX from various people. NOTA BENE: the location 1680 of the config file has moved to /usr/lib 1681 to match the HP-UX version of sendmail. 1682 CONFIG: Don't do any recipient rewriting on relay mailer; 1683 since this is intended only for internal use, the 1684 usual RFC 821/822/1123 rules can be relaxed. The 1685 main point of this is to avoid munging (ugh) UUCP 1686 addresses when relaying internally. 1687 CONFIG: fix typo in mailer/uucp.m4 that mutilates list:; 1688 syntax addresses delivered via UUCP. Solution 1689 provided by Peter Wemm. 1690 CONFIG: fix thumb-fumble in default UUCP relaying in ruleset 1691 zero; it caused double @ signs in addresses. From 1692 Irving Reid of the University of Toronto. 1693 CONFIG: Portability fixes for SCO Unix 3.2 with TCP/IP 1.2.1 1694 from Markku Toijala of ICL Personal Systems Oy. 1695 CONFIG: Add trailing "." on pseudo-domains for consistency; 1696 this fixes a problem (noted by Al Whaley of Sunnyside) 1697 that made it hard to recognize your own pseudodomain 1698 names. 1699 CONFIG: catch "@host" syntax errors (i.e., null local-parts) 1700 rather than letting them get "local configuration 1701 error"s. Problem noted by John Gardiner Myers. 1702 CONFIG: add uucp-uudom mailer variant, based on code posted 1703 by Spider Boardman <spider@Orb.Nashua.NH.US>; this 1704 has uucp-dom semantics but old UUCP syntax. This 1705 also permits "uucp-old" as an alias for "uucp" and 1706 "uucp-new" as a synonym for "suucp" for consistency. 1707 CONFIG: add POP mailer support (from Kimmo Suominen 1708 <kim@grendel.lut.fi>). 1709 CONFIG: drop CSNET_RELAY support -- CSNET is long gone. 1710 CONFIG: fix bug caused with domain literal addresses (e.g., 1711 ``[128.32.131.12]'') when FEATURE(allmasquerade) 1712 was set; it would get an additional @masquerade.host 1713 added to the address. Problem noted by Peter Wan 1714 of Georgia Tech. 1715 CONFIG: make sure that the local UUCP name is in $=w. From 1716 Jim Murray of Stratus. 1717 CONFIG: changes to UUCP rewriting to simulate IDA-style "V" 1718 mailer flag. Briefly, if you are sending to host 1719 "foo", then it rewrites "foo!...!baz" to "...!baz", 1720 "foo!baz" remains "foo!baz", and anything else has 1721 the local name prepended. 1722 CONFIG: portability fixes for HP-UX. 1723 DOC: several minor problems fixed in the Install & Op Guide. 1724 MAKEMAP: fix core dump problem on lines that are too long or 1725 which lack newline. From Mark Delany. 1726 MAILSTATS: print sums of columns (total messages & kbytes 1727 in and out of the system). From Tom Ferrin of UC 1728 San Francisco Computer Graphics Lab. 1729 SIGNIFICANT USER- OR SYSAD-VISIBLE CHANGES: 1730 On HP-UX, /etc/sendmail.cf has been moved to 1731 /usr/lib/sendmail.cf to match HP sendmail. 1732 Permissions have been tightened up on world-writable 1733 :include: files and accounts that have shells 1734 that are not listed in /etc/shells. This may 1735 cause some .forward files that have worked 1736 before to start failing. 1737 SIGUSR1 dumps some state to the log. 1738 NEW FILES: 1739 src/Makefile.DGUX 1740 src/Makefile.Dynix 1741 src/Makefile.FreeBSD 1742 src/Makefile.Mach386 1743 src/Makefile.NetBSD 1744 src/Makefile.RISCos 1745 src/Makefile.SCO 1746 src/Makefile.SVR4 1747 src/Makefile.Titan 1748 cf/mailer/pop.m4 1749 cf/ostype/bsdi1.0.m4 1750 cf/ostype/dgux.m4 1751 cf/ostype/dynix3.2.m4 1752 cf/ostype/sco3.2.m4 1753 makemap/Makefile.dist 1754 praliases/Makefile.dist 1755 17568.6.4/8.6.4 93/10/31 1757 Repair core-dump problem (write to read-only memory segment) 1758 if you fall back to the return-to-Postmaster case in 1759 savemail. Problem reported by Richard Liu. 1760 Immediately diagnose bogus sender addresses in SMTP. This 1761 makes quite certain that crackers can't use this 1762 class of attack. 1763 Reliability Fix: check return value from fclose() and fsync() 1764 in a few critical places. 1765 Minor problem in initsys() that reversed a condition for 1766 redirecting the output channel on queue runs. It's 1767 not clear this code even does anything. From Eric 1768 Wassenaar of the Dutch National Institute for Nuclear 1769 and High-Energy Physics. 1770 Fix some problems that caused queue runs to do "too much work", 1771 such as double-reading the Errors-To: header. From 1772 Eric Wassenaar. 1773 Error messages on writing the temporary file (including the 1774 data file) were getting suppressed in SMTP -- this 1775 fix causes them to be properly reported. From Eric 1776 Wassenaar. 1777 Some changes to support AF_UNIX sockets -- this will only 1778 really become relevant in the next release, but some 1779 people need it for local patches. From Michael 1780 Corrigan of UC San Diego. 1781 Use dynamically allocated memory (instead of static buffers) 1782 for macros defined in initsys() and settime(); since 1783 these can have different values depending on which 1784 envelope they are in. From Eric Wassenaar. 1785 Improve logging to show ctladdr on to= logging; this tells you 1786 what uid/gid processes ran as. 1787 Fix a problem that caused error messages to be discarded if 1788 the sender address was unparseable for some reason; 1789 this was supposed to fall back to the "return to 1790 postmaster" case. 1791 Improve aliaswait backoff algorithm. 1792 Portability patches for Linux (8.6.3 required another header 1793 file) (from Karl London) and SCO UNIX. 1794 CONFIG: patch prog mailer to not strip host name off of envelope 1795 addresses (so that it matches local again). From 1796 Christopher Davis. 1797 CONFIG: change uucp-dom mailer so that "<>" translates to $n; 1798 this prevents uux from seeing lines with null names like 1799 ``From Sat Oct 30 14:55:31 1993''. From Motonori 1800 Nakamura of Kyoto University. 1801 CONFIG: handle <list:;> syntax correctly. This isn't legal, but 1802 it shouldn't fail miserably. From Motonori Nakamura. 1803 18048.6.3/8.6.3 93/10/24 1805 IMPORTANT FIX: Fix several problems that caused open files to 1806 be "lost" during queue runs; this overflowed the open 1807 file table on large runs. An assumption that fdopen 1808 always succeeds sometimes resulted in core dumps when 1809 this happens; sometimes the message is delivered twice, 1810 sometimes (probably) infinite times. This problem in 1811 various form was reported by P{r (Pell) Emanuelsson and 1812 Robert Campbell of U.C. Berkeley. 1813 Special diagnosis of EMFILE error conditions -- it now prints 1814 the known open file descriptors so you can figure out 1815 what is consuming so much resources. 1816 Fix a couple of problems caused by early address parsing 1817 errors -- one caused it to return a "this is only a 1818 warning" when it really wasn't, and the other started 1819 parsing through a random pointer. The first was 1820 noted by Eric Wassenaar. 1821 Fix an infinite loop problem caused by null components in the 1822 host signature. Problem noted by Jan Sorensen. 1823 Be sure to reset the "current date" when sending an error 1824 message -- PostMasterCopy messages were being sent 1825 with an old Date: header. 1826 Fix a problem that caused duplicated mail when sendmail was 1827 (1) compiled without HASFLOCK, (2) you are sending to 1828 an alias that has an owner-* alias, (3) you execute 1829 sendmail with -t flag, (4) you run in -odb mode, and 1830 (5) the sender specifies both the alias name and 1831 another alias [i.e., the envelope is split], then 1832 duplicate messages are sent. The problem description 1833 and one-line fix are from Motonori Nakamura of Kyoto 1834 University. 1835 Avoid a problem that causes error messages to be discarded 1836 in some cases -- this was the result of a "fix" to 1837 avoid duplicate error messages, but two are better 1838 than zero. Reported by Tim Rylance. 1839 Fix a minor botch in checkfd012() -- fix from Dave Hill of 1840 Computervision R&D Ltd. 1841 Remove "X-Authentication-Warning: <user> set sender to <address> 1842 using -f" entirely -- it is far too eager to include 1843 this, and it is confusing folks. I'll try to make it 1844 work "right" in 8.7. Problem noted by Yoshitaka 1845 Tokugawa of dit Co., Ltd. 1846 Fix a race condition with the errno value in tick() and 1847 reapchild() -- this caused occasional misdiagnosis 1848 of problems. Kyle Jones of UUNET helped this along. 1849 Repair rule loop-detection code. From Michael Corrigan of 1850 U.C. San Diego. 1851 Fix a problem that caused sender domain addition (C mailer 1852 flag to be ignored if you use -odq or use -odb with 1853 a high load average. Problem reported by Jim Murray 1854 of Stratus. 1855 Fix ident protocol on multi-homed machines. It was not 1856 always using the correct interface. Fix from J.R. 1857 Oldroyd of Opal. 1858 Previously, sendmail assumed that any SMTP greeting message 1859 that wasn't 2xx was a temporary failure -- it should 1860 only take 4xx as a temporary failure, and return a 1861 solid error message on anything else -- for example, 1862 to allow you to reject connections on a workstation 1863 that is MXed to a mail server. 1864 Portability enhancements for 386BSD/FreeBSD/NetBSD from 1865 Ollivier Robert. 1866 CONFIG: FEATURE(always_add_domain) didn't always add the domain; 1867 in particular, on local mail it modified the header sender 1868 but not the header recipient address(es). Reported by 1869 Jeffrey Honig of Cornell University. Also, strip 1870 any host from envelope recipient address(es), since 1871 local mailers don't understand host names -- this is 1872 to help mailertable entries. From Christopher Davis. 1873 CONFIG: masquerading didn't apply to addresses that already 1874 had a domain. This change replaces a local hostname 1875 by the masquerade name in the SMTP mailer (previously 1876 it only added the masquerade name if it didn't already 1877 have a domain name). Several people complained about 1878 this. 1879 18808.6.2/8.6.2 93/10/15 1881 Put a "successful delivery" message in the transcript for 1882 addresses that get return-receipts. 1883 Put a prominent "this is only a warning" message in warning 1884 messages -- some people don't read carefully enough 1885 and end up sending the message several times. 1886 Include reason for temporary failure in the "warning" return 1887 message. Currently, it just says "cannot send for 1888 four hours". 1889 Fix the "Original message received" time generated for 1890 returntosender messages. It was previously listed as 1891 the current time. Bug reported by Eric Hagberg of 1892 Cornell University Medical College. 1893 If there is an error when writing the body of a message, 1894 don't send the trailing dot and wait for a response 1895 in sender SMTP, as this could cause the connection to 1896 hang up under some bizarre circumstances. From Eric 1897 Wassenaar. 1898 Fix some server SMTP synchronization problems caused when 1899 connections fail during message collection. From 1900 Eric Wassenaar. 1901 Fix a problem that can cause srvrsmtp to reject mail if the 1902 name server is down -- it accepts the RCPT but rejects 1903 the DATA command. Problem reported by Jim Murray of 1904 Stratus. 1905 Fix a problem that can cause core dumps if the config file 1906 incorrectly resolves to a null hostname. Reported by 1907 Allan Johannesen of WPI. 1908 Non-root use of -C flag, dangerous -f flags, and use of -oQ 1909 by non-root users were not put into 1910 X-Authentication-Warning:s as intended because the 1911 config file hadn't set the PrivacyFlags yet. Fix 1912 from Sven-Ove Westberg of the University of Lulea. 1913 Under very odd circumstances, the alias file rebuild code 1914 could get confused as to whether a database was 1915 open or not. 1916 Check "vendor code" on the end of V lines -- this is 1917 intended to provide a hook for vendor-specific 1918 configuration syntax. (This is a "new feature", 1919 but I've made an exception to my rule in a belief 1920 that this is a highly exceptional case.) 1921 Portability fixes for DG/UX (from Douglas Anderson of NCSC), 1922 SCO Unix (from Murray Kucherawy), A/UX, and OSF/1 1923 (from Jon Forrest of UC Berkeley) 1924 CONFIG: fix ``mailer:host'' form of UUCP relay naming. 1925 19268.6.1/8.6 93/10/08 1927 Portability fixes for A/UX and Encore UMAX V. 1928 Fix error message handling -- if you had a name server down 1929 causing an error during parsing, that message was never 1930 propogated to the queue file. 1931 19328.6/8.6 93/10/05 1933 Configuration cleanup: make it easier to undo IDENTPROTO in 1934 conf.h (other systems have the same bug). 1935 If HASGETDTABLESIZE and _SC_OPEN_MAX are both defined, assume 1936 getdtablesize() instead of sysconf(); a disturbingly 1937 large number of systems defined _SC_OPEN_MAX in the 1938 header files but don't have the syscall. 1939 Another patch to really truly ignore MX records in getcanonname 1940 if trymx == FALSE. 1941 Fix problem that caused the "250 IAA25499 Message accepted for 1942 delivery" message to be omitted if there was an error 1943 in the header of the message (e.g., a bad Errors-To: 1944 line). Pointed out by Michael Corrigan of UCSD. 1945 Announce name of host we are chatting when we get errors; this 1946 is an IDA-ism suggested by Christophe Wolfhugel. 1947 Portability fixes for Alpha OSF/1 (from Anthony Baxter of the 1948 Australian Artificial Intelligence Institute), SCO Unix 1949 (from Murray Kucherawy of Hookup Communication Corp.), 1950 NeXT (from Vince DeMarco and myself), Linux (from 1951 Karl London <karl@borg.demon.co.uk>), BSDI (from 1952 Christophe Wolfhugel, and SVR4 on Dell (from Kimmo 1953 Suominen), AUX 3.0 on Macintosh, and ANSI C compilers. 1954 Some changes to get around gcc optimizer bugs. From Takahiro 1955 Kanbe. 1956 Fix error recovery in queueup if another tf file of the same 1957 name already exists. Problem stumbled over by Bill 1958 Wisner of The Well. 1959 Output YP_MASTER_NAME and YP_LAST_MODIFIED without null bytes. 1960 Problem noted by Keith McMillan of Ameritech Services. 1961 Deal with group permissions properly when opening .forward and 1962 :include: files. This relaxes the 8.1C restrictions 1963 slightly more. This includes proper setting of groups 1964 when reading :include: files, allowing you to read some 1965 files that you should be able to read but have previously 1966 been denied unless you owned them or they had "other" 1967 read permission. 1968 Make certain that $j is in $=w (after the .cf is read) so that 1969 if the user is forced to override some silly system, 1970 MX suppression will still work. 1971 Fix a couple of efficiency problems where newstr was double- 1972 calling expensive routines. In at least one case, it 1973 wasn't guaranteed that they would always return the 1974 same result. Problem noted by Christophe Wolfhugel. 1975 Fix null pointer dereference in putoutmsg -- only on an error 1976 condition from a non-SMTP mailer. From Motonori 1977 Nakamura. 1978 Macro expand "C" line class definitions before scanning so that 1979 "CX $Z" works. 1980 Fix problem that caused error message to be sent while still 1981 trying to send the original message if the connection 1982 is closed during a DATA command after getting an error 1983 on an RCPT command (pretty obscure). Problem reported 1984 by John Myers of CMU. 1985 Fix reply to NOOP to be 250 instead of 200 -- this is a long 1986 term bug. 1987 Fix a nasty bug causing core dumps when returning the "warning: 1988 cannot deliver for N hours -- will keep trying" message; 1989 it only occurred if you had PostMasterCopy set and 1990 only on some architectures. Although sendmail would 1991 keep trying, it would send error messages on each 1992 queue interval. This is an important fix. 1993 Allow u and g options to take user and group names respectively. 1994 Don't do a chdir into the queue directory in -bt mode to make 1995 ruleset testing a bit easier. 1996 Don't allow users to turn off logging (using -oL) on the command 1997 line -- command line can only raise, not lower, logging 1998 level. 1999 Set $u to the original recipient on the SMTP transaction or on 2000 the command line. This is only done if there is exactly 2001 one recipient. Technically, this does not meet the 2002 specs, because it does not guarantee a domain on the 2003 address. 2004 Fix a problem that dumped error messages on bad addresses if 2005 you used the -t flag. Problem noted by Josh Smith of 2006 Harvey Mudd College. 2007 Given an address such as ``<foo> <bar>'', auto-quote the first 2008 ``<foo>'' part, giving ``"<foo>" <bar>''. This is to 2009 avoid the problem of people who use angle brackets in 2010 their full name information. 2011 Fix a null pointer dereference if you set option "l", have 2012 an Errors-To: header in the message, and have Errors-To: 2013 defined in the config file H lines. From J.R. Oldroyd. 2014 Put YPCOMPAT on #ifdef NIS instead -- it's one less thing to get 2015 wrong when compiling. Suggested by Rick McCarty of TI. 2016 Fix a problem that could pass negative SIZE parameter if the 2017 df file got lost; this would cause servers to always 2018 give a temporary failure, making the problem even worse. 2019 Problem noted by Allan Johannesen of WPI. 2020 Add "ident" timeout (one of the "r" option selectors) for IDENT 2021 protocol timeouts (30s default). Requested by Murray 2022 Kucherawy of HookUp Communication Corp. to handle bogus 2023 PC TCP/IP implementations. 2024 Change $w default definition to be just the first component of 2025 the domain name on config level 5. The $j macro defaults 2026 to the FQDN; $m remains as before. This lets well-behaved 2027 config files use any of the short, long, or subdomain 2028 names. 2029 Add makesendmail script in src to try to automate multi-architecture 2030 builds. I know, this is sub-optimal, but it is still 2031 helpful. 2032 Fix very obscure race condition that can cause a queue run to 2033 get a queue file for an already completed job. This 2034 problem has existed for years. Problem noted by the 2035 long suffering Allan Johannesen of WPI. 2036 Fix a problem that caused the raw sender name to be passed to 2037 udbsender instead of the canonified name -- this caused 2038 it to sometimes miss records that it should have found. 2039 Relax check of name on HELO packet so that a program using -bs 2040 that claims to be itself works properly. 2041 Restore rewriting of $: part of address through 2, R, 4 in 2042 buildaddr -- this requires passing a lot of flags to get 2043 it right. Unlike old versions, this ONLY rewrites 2044 recipient addresses, not sender addresses. 2045 Fix a bug that caused core dumps in config files that cannot 2046 resolve /file/name style addresses. Fix from Jonathan 2047 Kamens of OpenVision Technologies. 2048 Fix problem with fcntl locking that can cause error returns to 2049 be lost if the lock is lost; this required fully 2050 queueing everything, dropping the envelope (so errors 2051 would get returned), and then re-reading the queue from 2052 scratch. 2053 Fix a problem that caused aliases that redefine an otherwise 2054 true address to still send to the original address 2055 if and only if the alias failed in certain bizarre 2056 ways (e.g, if they pointed at a list:; syntax address). 2057 Problem pointed out by Jonathan Kamens. 2058 Remove support for frozen configuration files. They caused 2059 more trouble than it was worth. 2060 Fix problem that can cause error messages to get ignored when 2061 using both -odb and -t flags. Problem noted by Rob 2062 McNicholas at U.C. Berkeley. 2063 Include all "normal" variations on hostname in $=w. For example, 2064 if the host name is vangogh.cs.berkeley.edu, $=w will 2065 contain vangogh, vangogh.cs, and vangogh.cs.berkeley.edu. 2066 Add "restrictqrun" privacy flag -- without this, anyone can run 2067 the queue. 2068 Reset SmtpPhase global on initial connection creation so that 2069 messages don't come out with stale information. 2070 Pass an "ext" argument to lockfile so that error/log messages 2071 will properly reflect the true filename being locked. 2072 Put all [...] address forms into $=w -- this eliminates the need 2073 for MAXIPADDR in conf.h. Suggested by John Gardiner 2074 Myers of CMU. 2075 Fix a bug that can cause qf files to be left around even after 2076 an SMTP RSET command. Problem and fix from Michael 2077 Corrigan. 2078 Don't send a PostMasterCopy to errors when the Precedence: is 2079 negative. Error reports still go to the envelope 2080 sender address. 2081 Add LA_SHORT for load averages. 2082 Lock sendmail.st file when posting statistics. 2083 Add "SendBufSize" and "RcvBufSize" suboptions to "O" option to 2084 set the size of the TCP send and receive buffers; if you 2085 run over a slow slip line you may need to set these down 2086 (although it would be better to fix the SLIP implementation 2087 so that it's not necessary to recompile every program 2088 that does bulk data transfer). 2089 Allow null defaults on $( ... $) lookups. Problem reported by 2090 Amir Plivatsky. 2091 Diagnose crufty S and V config lines. This resulted from an 2092 observation that some people were using the SITE macro 2093 without the SITECONFIG macro first, which was causing 2094 bogus config files that were not caught. 2095 Fix makemap -f flag to turn off case folding (it was turning it 2096 on instead). THIS IS A USER VISIBLE CHANGE!!! 2097 Fix a problem that caused multiple error messages to be sent if 2098 you used "sendmail -t -oem -odb", your system uses fcntl 2099 locking, and one of the recipient addresses is unknown. 2100 Reset uid earlier in include() so that recursive .forwards or 2101 :include:s don't use the wrong uid. 2102 If file descriptor 0, 1, or 2 was closed when sendmail was 2103 called, the code to recover the descriptor was broken. 2104 This sometimes (only sometimes) caused problems with the 2105 alias file. Fix from Motonori Nakamura. 2106 Fix a problem that caused aliaswait to go into infinite recursion 2107 if the @:@ metasymbol wasn't found in the alias file. 2108 Improve error message on newaliases if database files cannot be 2109 opened or if running with no database format defined. 2110 Do a better estimation of the size of error messages when NoReturn 2111 is set. Problem noted by P{r (Pell) Emanuelsson. 2112 Fix a problem causing the "c" option (don't connect to expensive 2113 mailers) to be ignored in SMTP. Problem noted and the 2114 solution suggested by Robert Elz of Munnari University. 2115 Improve connection caching algorithm by passing "[host]" to 2116 hostsignature, which strips the square brackets and 2117 returns the real name. This allows mailertable entries 2118 to match regular entries. 2119 Re-enable Return-Receipt-To: -- people seem to want this stupid 2120 feature, even if it doesn't work right. 2121 Catch and log attempts to try the "wiz" command in server SMTP. 2122 This also ups the log level from LOG_NOTICE to LOG_CRIT. 2123 Be more generous at assigning $z to the home directory -- do this 2124 for programs that are specified through a .forward file. 2125 Fix from Andrew Chang of Sun Microsystems. 2126 Always save a fatal error message in preference to a non-fatal 2127 error message so that the "subject" line of return 2128 messages is the best possible. 2129 CONFIG: reduce the number of quotes needed to quote configuration 2130 parameters with commas: two quotes should work now, e.g., 2131 define(ALIAS_FILE, ``/etc/aliases,/etc/aliases.local''). 2132 CONFIG: class $=Z is a set of UUCP hosts that use uucp-dom 2133 connections (domain-ized UUCP). 2134 CONFIG: fix bug in default maps (-o must be before database file 2135 name). Pointed out by Christophe Wolfhugel. 2136 CONFIG: add FEATURE(nodns) to state that we are not relying on 2137 DNS. This would presumably be used in UUCP islands. 2138 CONFIG: add OSTYPE(nextstep) and OSTYPE(linux). 2139 CONFIG: log $u in Received: line. This is in technical violation 2140 of the standards, since it doesn't guarantee a domain 2141 on the address. 2142 CONFIG: don't assume "m" in local mailer flags -- this means that 2143 if you redefine LOCAL_MAILER_FLAGS you will have to include 2144 the "m" flag should you want it. Apparently some Solaris 2.2 2145 installations can't handle multiple local recipients. 2146 Problem noted by Josh Smith. 2147 CONFIG: add confDOMAIN_NAME to set $j (if undefined, $j defaults). 2148 CONFIG: change default version level from 4 to 5. 2149 CONFIG: add FEATURE(nullclient) to create a config file that 2150 forwards all mail to a hub without ever looking at the 2151 addresses in any detail. 2152 CONFIG: properly strip mailer: information off of relays when 2153 used to change .BITNET form into %-hack form. 2154 CONFIG: fix a problem that caused infinite loops if presented 2155 with an address such as "!foo". 2156 CONFIG: check for self literal (e.g., [128.32.131.12]) even if 2157 the reverse "PTR" mapping is broken. There's a better 2158 way to do this, but the change is fairly major and I 2159 want to hold it for another release. Problem noted by 2160 Bret Marquis. 2161 21628.5/8.5 93/07/23 2163 Serious bug: if you used a command line recipient that was unknown 2164 sendmail would not send a return message (it was treating 2165 everything as though it had an SMTP-style client that 2166 would do the return itself). Problem noted by Josh Smith. 2167 Change "trymx" option in getcanonname() to ignore all MX data, 2168 even during a T_ANY query. This actually didn't break 2169 anything, because the only time you called getcanonname 2170 with !trymx was if you already knew there were no MX 2171 records, but it is somewhat cleaner. From Motonori 2172 Nakamura. 2173 Don't call getcanonname from getmxrr if you already know there 2174 are no DNS records matching the name. 2175 Fix a problem causing error messages to always include "The 2176 original message was received ... from localhost". 2177 The correct original host information is now included. 2178 Previous change to cf/sh/makeinfo.sh doesn't port to Ultrix (their 2179 version of "test" doesn't have the -x flag). Change it 2180 to use -f instead. From John Myers. 2181 CONFIG: 8.4 mistakenly set the default SMTP-style mailer to 2182 esmtp -- it should be smtp. 2183 CONFIG: send all relayed mail using confRELAY_MAILER (defaults 2184 to "relay" (a variant of "smtp") if MAILER(smtp) is used, 2185 else "suucp" if MAILER(uucp) is used, else "unknown"); 2186 this cleans up the configs somewhat. This fixes a serious 2187 problem that caused route-addrs to get mistaken as relays, 2188 pointed out by John Myers. WARNING: this also causes 2189 the default on SMART_HOST to change from "suucp" to 2190 "relay" if you have MAILER(smtp) specified. 2191 21928.4/8.4 93/07/22 2193 Add option `w'. If you receive a message that comes to you because 2194 you are the best (lowest preference) target of an MX, and 2195 you haven't explicitly recognized the source MX host in 2196 your .cf file, this option will cause you to try the target 2197 host directly (as if there were no MX for it at all). If 2198 `w' is not set, this case is a configuration error. 2199 Beware: if `w' is set, senders may get bogus errors like 2200 "message timed out" or "host unknown" for problems that 2201 are really configuration errors. This option is 2202 disrecommended, provided only for compatibility with 2203 UIUC sendmail. 2204 Fix a problem that caused the incoming socket to be left open 2205 when sendmail forks after the DATA command. This caused 2206 calling systems to wait in FIN_WAIT_2 state until the 2207 entire list was processed and the child closed -- a 2208 potentially prodigious amount of time. Problem noted 2209 by Neil Rickert. 2210 Fix problem (created in 6.64) that caused mail sent to multiple 2211 addresses, one of which was a bad address, to completely 2212 suppress the sending of the message. This changes 2213 handling of EF_FATALERRS somewhat, and adds an 2214 EF_GLOBALERRS flag. This also fixes a potential problem 2215 with duplicate error messages if there is a syntax error 2216 in the header of a message that isn't noticed until late 2217 in processing. Original problem pointed out by Josh Smith 2218 of Harvey Mudd College. This release includes quite a bit 2219 of dickering with error handling (see below). 2220 Back out SMTP transaction if MAIL gets nested 501 error. This 2221 will only hurt already-broken software and should help 2222 humans. 2223 Fix a problem that broke aliases when neither NDBM nor NEWDB were 2224 compiled in. It would never read the alias file. 2225 Repair unbalanced `)' and `>' (the "open" versions are already 2226 repaired). 2227 Logging of "done" in dropenvelope() was incorrect: it would 2228 log this even when the queue file still existed. Change 2229 this to only log "done" (at log level 11) when the 2230 queue file is actually removed. From John Myers. 2231 Log "lost connection" in server SMTP at log level 20 if there 2232 is no pending transaction. Some senders just close the 2233 connection rather than sending QUIT. 2234 Fix a bug causing getmxrr to add a dot to the end of unqualified 2235 domains that do not have MX records -- this would cause 2236 the subsequent host name lookup to fail. The problem 2237 only occurred if you had FEATURE(nocanonify) set. 2238 Problem noted by Rick McCarty of Texas Instruments. 2239 Fix invocation of setvbuf when passed a -X flag -- I had 2240 unwittingly used an ANSI C extension, and this caused 2241 core dumps on some machines. 2242 Diagnose self-destructive alias loops on RCPT as well as EXPN. 2243 Previously it just gave an empty send queue, which 2244 then gave either "Need RCPT (recipient)" at the DATA 2245 (confusing, since you had given an RCPT command which 2246 returned 250) or just dropped the email, depending on 2247 whether you were running VERBose mode. Now it usually 2248 diagnoses this case as "aliasing/forwarding loop broken". 2249 Unfortunately, it still doesn't adequately diagnose 2250 some true error conditions. 2251 Add internal concept of "warning messages" using 6xx codes. 2252 These are not reported only to Postmaster. Unbalanced 2253 parens, brackets, and quotes are printed as 653 codes. 2254 They are always mapped to 5xx codes before use in SMTP. 2255 Clean up error messages to tell both the actual address that 2256 failed and the alias they arose from. This makes it 2257 somewhat easier to diagnose problems. Difficulty noted 2258 by Motonori Nakamura. 2259 Fix a problem that inappropriately added a ctladdr to addresses 2260 that shouldn't have had one during a queue run. This 2261 caused error messages to be handled differently during 2262 a queue run than a direct run. 2263 Don't print the qf name and line number if you get errors during 2264 the direct run of the queue from srvrsmtp -- this was 2265 just extra stuff for users to crawl through. 2266 Put command line flags on second line of pid file so you can 2267 auto-restart the daemon with all appropriate arguments. 2268 Use "kill `head -1 /etc/sendmail.pid`" to stop the 2269 daemon, and "eval `tail -1 /etc/sendmail.pid`" to 2270 restart it. 2271 Remove the ``setuid(getuid())'' in main -- this caused the 2272 IDENT daemon to screw up. This required that I change 2273 HASSETEUID to HASSETREUID and complicate the mode 2274 changing somewhat because both Ultrix and SunOS seem 2275 to have a bug causing seteuid() to set the saved uid 2276 as well as the effective. The program test/t_setreuid.c 2277 will test to see if your implementation of setreuid(2) 2278 is appropriately functional. 2279 The FallBackMX (option V) handling failed to properly identify 2280 fallback to yourself -- most of the code was there, 2281 but it wasn't being enabled. Problem noted by Murray 2282 Kucherawy of the University of Waterloo. 2283 Change :include: open timeout from ETIMEDOUT to an internal 2284 code EOPENTIMEOUT; this avoids adding "during SmtpPhase 2285 with CurHostName" in error messages, which can be 2286 confusing. Reported by Jonathan Kamens of OpenVision 2287 Technologies. 2288 Back out setpgrp (setpgid on POSIX systems) call to reset the 2289 process group id. The original fix was to get around 2290 some problems with recalcitrant MUAs, but it breaks 2291 any call from a shell that creates a process group id 2292 different from the process id. I could try to fix 2293 this by diddling the tty owner (using tcsetpgrp or 2294 equivalent) but this is too likely to break other 2295 things. 2296 Portability changes: 2297 Support -M as equivalent to -oM on Ultrix -- apparently 2298 DECnet calls sendmail with -MrDECnet -Ms<HOST> -bs 2299 instead of using standard flags. Oh joy. This 2300 behaviour reported by Jon Giltner of University 2301 of Colorado. 2302 SGI IRIX -- this includes several changes that should 2303 help other strict ANSI compilers. 2304 SCO Unix -- from Murray Kucherawy of HookUp Communication 2305 Corporation. 2306 Solaris running the Sun C compiler (which despite the 2307 documentation apparently doesn't define 2308 __STDC__ by default). 2309 ConvexOS from Eric Schnoebelen of Convex. 2310 Sony NEWS workstations and Omron LUNA workstations from 2311 Motonori Nakamura. 2312 CONFIG: add confTRY_NULL_MX_LIST to set option `w'. 2313 CONFIG: delete `C' and `e' from default SMTP mailers flags; 2314 several people have made a good argument that this 2315 creates more problems than it solves (although this 2316 may prove painful in the short run). 2317 CONFIG: generalize all the relays to accept a "mailer:host" 2318 format. 2319 CONFIG: move local processing in ruleset 0 into a new ruleset 2320 98 (8 on old sendmail). Domain literal [a.b.c.d] 2321 addresses are also passed through this ruleset. 2322 CONFIG: if neither SMART_HOST nor MAILER(smtp) were defined, 2323 internet-style addresses would "fall off the end" of 2324 ruleset zero and be interpreted as local -- however, 2325 the angle brackets confused the recursive call. 2326 These are now diagnosed as "Unrecognized host name". 2327 CONFIG: USENET rules weren't included in S0 because of a mistaken 2328 ifdef(`_MAILER_USENET_') instead of 2329 ifdef(`_MAILER_usenet_'). Problem found by Rein Tollevik 2330 of SINTEF RUNIT, Oslo. 2331 CONFIG: move up LOCAL_RULE_0 processing so that it happens very 2332 early in ruleset 0; this allows .mc authors to bypass 2333 things like the "short circuit" code for local addresses. 2334 Prompted by a comment by Bill Wisner of The Well. 2335 CONFIG: add confSMTP_MAILER to define the mailer used (smtp or 2336 esmtp) to send SMTP mail. This allows you to default 2337 to esmtp but use a mailertable or other override to 2338 deal with broken servers. This logic was pointed out 2339 to me by Bill Wisner. Ditto for confLOCAL_MAILER. 2340 Changes to cf/sh/makeinfo.sh to make it portable to SVR4 2341 environments. Ugly as sin. 2342 23438.3/8.3 93/07/13 2344 Fix setuid problems introduced in 8.2 that caused messages 2345 like "Cannot create qfXXXXXX: Invalid argument" 2346 or "Cannot reopen dfXXXXXX: Permission denied". This 2347 involved a new compile flag "HASSETEUID" that takes 2348 the place of the old _POSIX_SAVED_IDS -- it turns out 2349 that the POSIX interface is broken enough to break 2350 some systems badly. This includes some fixes for 2351 HP-UX. Also fixes problems where the real uid is 2352 not reset properly on startup (from Neil Rickert). 2353 Fix a problem that caused timed out messages to not report the 2354 addresses that timed out. Error messages are also more 2355 "user friendly". 2356 Drop required bandwidth on connections from 64 bytes/sec to 2357 16 bytes/sec. 2358 Further Solaris portability changes -- doesn't require the BSD 2359 compatibility library. This also adds a new 2360 "HASGETDTABLESIZE" compile flag which can be used if 2361 you want to use getdtablesize(2) instead of sysconf(2). 2362 These are loosely based on changes from David Meyer at 2363 University of Oregon. This now seems to work, at least 2364 for quick test cases. 2365 Fix a problem that can cause duplicate error messages to be 2366 sent if you are in SMTP, you send to multiple addresses, 2367 and at least one of those addresses is good and points 2368 to an account that has a .forward file (whew!). 2369 Fix a problem causing messages to be discarded if checkcompat() 2370 returned EX_TEMPFAIL (because it didn't properly mark 2371 the "to" address). Problem noted by John Myers. 2372 Fix dfopen to return NULL if the open failed; I was depending 2373 on fdopen(-1) returning NULL, which isn't the case. This 2374 isn't serious, but does result in wierd error diagnoses. 2375 From Michael Corrigan. 2376 CONFIG: add UUCP_MAX_SIZE M4 macro to set the maximum size of 2377 messages sent through UUCP-family mailers. Suggested 2378 by Bill Wisner of The Well. 2379 CONFIG: if both MAILER(uucp) and MAILER(smtp) are specified, 2380 include a "uucp-dom" mailer that uses domain-style 2381 addressing. Suggested by Bill Wisner. 2382 CONFIG: Add LOCAL_SHELL_FLAGS and LOCAL_SHELL_ARGS to match 2383 LOCAL_MAILER_FLAGS and LOCAL_MAILER_ARGS. Suggested by 2384 Christophe Wolfhugel. 2385 CONFIG: Add OSTYPE(aix3). From Christophe Wolfhugel. 2386 23878.2/8.2 93/07/11 2388 Don't drop out on config file parse errors in -bt mode. 2389 On older configuration files, assume option "l" (use Errors-To 2390 header) for back compatibility. NOTE: this DOES NOT 2391 imply an endorsement of the Errors-To: header in any way. 2392 Accept -x flag on AIX-3 as well as OSF/1. Why, why, why??? 2393 Don't log errors on EHLO -- it isn't a "real" error for an old 2394 SMTP server to give an error on this command, and 2395 logging it in the transcript can be confusing. Fix 2396 from Bill Wisner. 2397 IRIX compatibility changes provided by Dan Rich 2398 <drich@sandman.lerc.nasa.gov>. 2399 Solaris 2 compatibility changes. Provided by Bob Cunningham 2400 <bob@kahala.soest.hawaii.edu>, John Oleynick 2401 <juo@klinzhai.rutgers.edu> 2402 Debugging: -d17 was overloaded (hostsignature and usersmtp.c); 2403 move usersmtp (smtpinit and smtpmailfrom) to -d18 to 2404 match the other flags in that file. 2405 Flush transcript before fork in mailfile(). From Eric Wassenaar. 2406 Save h_errno in mci struct and improve error message display. 2407 Changes from Eric Wassenaar. 2408 Open /dev/null for the transcript if the create of the xf file 2409 failed; this avoids at least one possible null pointer 2410 reference in very wierd cases. From Eric Wassenaar. 2411 Clean up statistics gathering; it was over-reporting because of 2412 forks. From Eric Wassenaar. 2413 Fix problem that causes old Return-Path: line to override new 2414 Return-Path: line (conf.c needs H_FORCE to avoid 2415 re-using old value). From Motonori Nakamura. 2416 Fix broken -m flag in K definition -- even if -m (match only) 2417 was specified, it would still replace the key with the 2418 value. Noted by Rick McCarty of Texas Instruments. 2419 If the name server timed out over several days, no "timed out" 2420 message would ever be sent back. The timeout code 2421 has been moved from markfailure() to dropenvelope() 2422 so that all such failures should be diagnosted. Pointed 2423 out by Christophe Wolfhugel and others. 2424 Relax safefile() constraints: directories in an include or 2425 forward path must be readable by self if the controlling 2426 user owns the entry, readable by all otherwise (e.g., 2427 when reading your .forward file, you have to own and 2428 have X permssion in it; everyone needs X permission in 2429 the root and directories leading up to your home); 2430 include files must be readable by anyone, but need not 2431 be owned by you. 2432 If _POSIX_SAVED_IDS is defined, setuid to the owner before 2433 reading a .forward file; this gets around some problems 2434 on NFS mounts if root permission is not exported and 2435 the user's home directory isn't x'able. 2436 Additional NeXT portability enhancements from Axel Zinser. 2437 Additional HP-UX portability enhancements from Brian Bullen. 2438 Add a timeout around SMTP message writes; this assumes you can 2439 get throughput of at least 64 bytes/second. Note that 2440 this does not impact the "datafinal" default, which 2441 is separate; this is just intended to work around 2442 network clogs that will occur before the final dot 2443 is sent. From Eric Wassenaar. 2444 Change map code to set the "include null" flag adaptively -- 2445 it initially tries both, but if it finds anything 2446 matching without a null it never tries again with a 2447 null and vice versa. If -N is specified, it never 2448 tries without the null and creates new maps with a 2449 null byte. If -O is specified, it never tries with 2450 the null (for efficiency). If -N and -O are specified, 2451 you get -NO (get it?) lookup at all, so this would 2452 be a bad idea. If you don't specify either -N or -O, 2453 it adapts. 2454 Fix recognition of "same from address" so that MH submissions 2455 will insert the appropriate full name information; 2456 this used to work and got broken somewhere along the 2457 way. 2458 Some changes to eliminate some unnecessary SYSERRs in the 2459 log. For example, if you lost a connection, don't 2460 bother reporting that fact on the connection you lost. 2461 Add some "extended debugging" flags to try to track down 2462 why we get occassional problems with file descriptor 2463 one being closed when execing a mailer; it seems to 2464 only happen when there has been another error in the 2465 same transaction. This requires XDEBUG, defined 2466 by default in conf.h. 2467 Add "-X filename" command line flag, which logs both sides of 2468 all SMTP transactions. This is intended ONLY for 2469 debugging bad implementations of other mailers; start 2470 it up, send a message from a mailer that is failing, 2471 and then kill it off and examine the indicated log. 2472 This output is not intended to be particularly human 2473 readable. This also adds the HASSETVBUF compile 2474 flag, defaulted on if your compiler defines __STDC__. 2475 CONFIG: change SMART_HOST to override an SMTP mailer. If you 2476 have a local net that should get direct connects, you 2477 will need to use LOCAL_NET_CONFIG to catch these hosts. 2478 See cf/README for an example. 2479 CONFIG: add LOCAL_MAILER_ARGS (default: `mail -d $u') to handle 2480 sites that don't use the -d flag. 2481 CONFIG: hide recipient addresses as well as sender addresses 2482 behind $M if FEATURE(allmasquerade) is specified; this 2483 has been requested by several people, but can break 2484 local aliases. For example, if you mail to "localalias" 2485 this will be rewritten as "localalias@masqueradehost"; 2486 although initial delivery will work, replies will be 2487 broken. Use it sparingly. 2488 CONFIG: add FEATURE(domaintable). This maps unqualified domains 2489 to qualified domains in headers. I believe this is 2490 largely equivalent to the IDA feature of the same name. 2491 CONFIG: use $U as UUCP name instead of $k. This permits you 2492 to override the "system name" as your UUCP name -- 2493 in particular, to use domain-ized UUCP names. From 2494 Bill Wisner of The Well. 2495 CONFIG: create new mailer "esmtp" that always tries EHLO 2496 first. This is currently unused in the config files, 2497 but could be used in a mailertable entry. 2498 24998.1C/8.1B 93/06/27 2500 Serious security bug fix: it was possible to read any file on 2501 the system, regardless of ownership and permissions. 2502 If a subroutine returns a fully qualified address, return it 2503 immediately instead of feeding it back into rewriting. 2504 This fixes a problem with mailertable lookups. 2505 CONFIG: fix some M4 frotz (concat => CONCAT) 2506 25078.1B/8.1A 93/06/12 2508 Serious bug fix: pattern matching backup algorithm stepped by 2509 two tokens in classes instead of one. Found by Claus 2510 Assmann at University of Kiel, Germany. 2511 25128.1A/8.1A 93/06/08 2513 Another mailertable fix.... 2514 25158.1/8.1 93/06/07 2516 4.4BSD freeze. No semantic changes. 2517 25186.65/6.34 93/06/06 2519 Fix some lintish problems. 2520 Fix some cases where server SMTP behaved poorly when handed bogus 2521 input, pointed out by Eric Wassenaar. 2522 CONFIG: fix some more (sigh) mailertable bugs -- thanks to 2523 Motonori Nakamura of Kyoto University (again). 2524 25256.64/6.33 93/06/05 2526 Don't send 050 (-v) information after the 250 response to a QUIT 2527 command in srvrsmtp -- clients usually close the connection 2528 at this point, and it causes bogus error messages. 2529 Don't send messages that have errors on input (such as unbalanced 2530 parentheses) during SMTP transactions, since a return 2531 message has (probably) already been sent. 2532 Give better diagnostics on timeouts during network reads, including 2533 information similar to the SMTP phase. 2534 Fix bug that caused SMTP messages to deliver synchronously; this 2535 happened after the DATA 250, and hence caused reading the 2536 next command to be delayed. 2537 Ignore Errors-To: header unless 'l' (lower case el) header is 2538 specified. The Errors-To: header violates RFC 1123. 2539 Errors-To: was only needed to take the place of the 2540 envelope sender in the days when most Unix mailers 2541 didn't understand about the two kinds of senders. 2542 Don't send warning messages in response to automatically generated 2543 messages (that is, those From:<>). 2544 CONFIG: fix some rather stupid typos in the mailertable code 2545 pointed out by Motonori Nakamura of Kyoto University. 2546 CONFIG: add confUSE_ERRORS_TO configuration option. 2547 CONFIG: if ALWAYS_ADD_DOMAIN is selected, try to use $M 2548 (masquerade name) instead of $j. 2549 CONFIG: don't add dots to relay names (added in 6.29); it breaks 2550 several things, and can be simulated by dot terminating 2551 the names of relays. For example, use: 2552 DBbit.net.relay. 2553 (note the trailing dot). 2554 25556.63/6.32 93/06/01 2556 Fix prototypes to eliminate chars in argument lists -- some 2557 compilers are pissy about this. 2558 Log protocol ($r) and body type if set so we can determine if 2559 the adaptive algorithms are working. 2560 Pessimize on locking of database files (particularly for NEWDB 2561 databases) during opens. There were problems with 2562 processes opening the file while it was rebuilt; since 2563 NEWDB caches heavily, the reader opened an empty file, 2564 which is an error. If your system has the ability to 2565 lock atomically on open, this works properly; otherwise, 2566 there are race conditions. 2567 Check mod time on .pag file instead of .dir in NDBM aliases 2568 because the .dir file doesn't get updated for small 2569 alias files. From John Gardiner Myers of CMU. 2570 More Solaris portability -- it now compiles on Solaris, but 2571 hangs up in gethostbyname(). 2572 Move setting of RES_DEBUG flag before first myhostname() call 2573 so we can see name server traffic on that call. 2574 Fsync() queue files. 2575 Fix a problem that causes -bi to try to rebuild maps other than 2576 the alias file(s). 2577 Fix a problem that caused udb to reject entries from any but 2578 the first database listed. 2579 Rearrange doc subdirectory for 4.4BSD release tape. 2580 CONFIG: put $r into the Received line. This was an oversight. 2581 CONFIG: fix typo (call to ruleset 99 should have been rulset 90). 2582 CONFIG: move "auxiliary" subroutines to be in ruleset 90-99 2583 range -- in the long run, single digit rulesets may 2584 become reserved for builtin use by sendmail. 2585 CONFIG: fix major problem that causes host aliases (that is, 2586 anything in $=w != $j) to not be recognized. This has 2587 been around since 6.30. 2588 25896.62/6.31 93/05/28 2590 BETA RELEASE 2591 Fix recursive syserr (if there is an error printing a syserr 2592 message). This makes the code much less eager to consider 2593 a write error as serious. This also includes some 2594 heuristics to be clever about closed connections. 2595 Lock NEWDB files during gets. This requires version 1.5 or later 2596 of the db library. If you have an older version, you 2597 can use -DOLD_NEWDB. This will go away in a few weeks. 2598 Fix problem causing aliases that use host maps to get overwritten. 2599 Do appropriate byte swapping on port numbers in ident protocol 2600 code. Fix from Allan Johannesen of WPI. 2601 Defer opening of map files to the same time as alias files so that 2602 the daemon will tend to pick up new versions more promptly. 2603 Prototype a bunch more functions. 2604 Some Solaris 2.1 changes (still doesn't link though). 2605 Try to simplify Makefiles by including more subordinate #defines 2606 in conf.h (based on OS type). 2607 CONFIG: check for domains if FEATURE(mailertable) is defined. 2608 For example, if the host name is "knecht.cs.berkeley.edu" 2609 it will search the following mailertable keys: 2610 knecht.cs.berkeley.edu 2611 .cs.berkeley.edu 2612 .berkeley.edu 2613 .edu 2614 This could be used to replace the special relays for bitnet 2615 and similar nets. 2616 26176.61/6.30 93/05/24 2618 Fix problem that prevented appending dots on canonified host 2619 names. This breaks tons of config files -- very 2620 important fix. 2621 Fix improper pointer dereference in response to HELO command. 2622 Fix core dump if debugging set in map_rewrite. 2623 CONFIG: add FEATURE(always_add_domain) to always attach the 2624 local domain (only impacts local mail). 2625 CONFIG: try to avoid turning names into $j -- although 2626 technically a host can only have one "canonical name", 2627 it seems to be common practice to have several. 2628 26296.60/6.29 93/05/22 2630 Major change: merge alias databases with maps. This expands and 2631 changes the map class interface but fixes a bunch of bugs. 2632 The important user-visible change is that the file name 2633 in a K line now does not include the ".db" extension; this 2634 is added automatically. Also, the -d (NIS domain) flag is 2635 missing from the K config line; use @domain instead. 2636 When compiling, the *_MAP names are gone -- just compile 2637 in NDBM, NEWDB, and/or NIS support. 2638 Announce mailer/host/user triple on -bv flag -- from Brian 2639 Bullen of Stirling University. 2640 Don't send more than one line in response to HELO -- it confuses 2641 Pony Express, which then behaves very badly. However, 2642 this change does send two line 220 greetings, with the 2643 second line reading "ESMTP spoken here". The usersmtp 2644 module recognizes this and goes into ESMTP mode regardless 2645 of the setting of the "a" mailer flag. Thus, "a" means 2646 "always try EHLO". 2647 AIX portability changes (thanks to Christophe Wolfhugel of 2648 Herve Schauer Consultants (Paris) for providing me with 2649 an INSA account for this purpose). Lightly tested. Use 2650 -D_AIX3. This probably breaks compatibility with some 2651 older systems (e.g., 4.2bsd) but still works on SunOS 2652 4.1.2, Ultrix 4.2A, HP-UX 8.07, OSF/1 T1.3, and AIX 3.2.3. 2653 Fix a problem causing an error message loop if the output channel 2654 is hosed. 2655 Add the Makefiles that I use for various environments -- some are 2656 Berkeley make versions and some are old make versions. 2657 My makefile for the NeXT box has gotten lost, alas! 2658 PRALIASES: support for printing NEWDB databases. From 2659 Michael J. Corrigan of U.C. San Diego. 2660 CONFIG: don't pass pseudo-domains to $[ ... $] (if you have 2661 a wildcard MX it can have wierd results). From 2662 Christophe Wolfhugel. 2663 CONFIG: dot terminate relay hostnames in S0. From Christophe 2664 Wolfhugel. 2665 26666.59/6.28 93/05/13 2667 Log version with SMTP daemon startup message. 2668 Adjust setproctitle to work on NetBSD and BSD/386. 2669 Fix null pointer reference in MX fallback code. 2670 A bunch of minor fixes from Eric Wassenaar: 2671 If deliver cannot execv the mailer, return EX_OSERR 2672 instead of EX_TEMPFAIL (to give better 2673 error messages). 2674 Consistently malloc e_message. 2675 Catch degenerate case of calling returntosender() 2676 with an empty returnq. 2677 MIME reformatting. 2678 26796.58/6.28 93/05/13 2680 Fix bug that can cause incorrect verbose display of user smtp 2681 messages. 2682 Disable SMTP VERB command if PRIV_NOEXPN is set (since this 2683 could reveal the same information. 2684 Allow failure when reading SMTP greeting message to go on to 2685 next MX host. 2686 Add "MIME-Version: 1.0" header if using MIME (this was NOT 2687 included in RFC 1344, but Bill King of Allan-Bradley 2688 Company forwarded me email from Nathaniel Borenstein 2689 claiming that it was an inadvertent omission). 2690 Don't use Content-Type: X-message-header. According to John 2691 Myers of CMU, many MIME readers will completely ignore 2692 the data if they don't recognize it. Instead, just 2693 add a blank line to make it a legal (empty) message. 2694 Fix problem causing dots to keep getting appended to cached 2695 hostnames. This can cause buffer overrun conditions. 2696 The problem was found by Erik Forsberg of Retix, 2697 although I used a different bug fix than he provided. 2698 Fix parsing of split header/envelope rewriting specs -- from 2699 Eric Forsberg. 2700 Fix from Eric Wassenaar to correct To: lists in error messages. 2701 27026.57/6.28 93/05/11 2703 Fix minor glitch causing extra ctladdrs to be output to queue 2704 file. Just an annoyance. 2705 Cache results of name server canonification lookups to avoid 2706 backed up queue runs. 2707 Major rewrite of alias.c: considerable cleanup, plus sample 2708 (untested) support for NIS aliases. The "A" option 2709 can now be a comma separated list (or be repeated) -- 2710 that is, you can have multiple alias databases. Each 2711 database can have the syntax ``class:file''; if no class 2712 is specified, the "implicit" class is assumed. Implicit 2713 searches through a list of compiled in types -- hash, 2714 dbm, nis, and stab. Alias files are searched in the 2715 order they are listed. For example: 2716 OAhash:/etc/aliases.local,/etc/aliases 2717 OAnis:mail.aliases@my.nis.domain 2718 first searches the hash database /etc/aliases.local, 2719 then the regular /etc/aliases database, then the NIS 2720 map "mail.aliases" in the NIS domain "my.nis.domain". 2721 If in Verbose mode (probably from VERB command) run SMTP job 2722 in foreground and don't do RCPT optimizations. 2723 Add udb :mailsender as equivalent to owner- for regular aliases. 2724 Delete option 8; add option 7 that means the opposite. That is, 2725 default to 8-bit mode; a special option is needed to 2726 force sendmail into 7 bit mode. 2727 Send error messages in encapsulated MIME format. 2728 New compile flag "NIS" that turns on NIS alias and NIS map 2729 support. 2730 Add "j" option to send error messages in MIME (RFC 1341) 2731 encapsulated message format per RFC 1344. The 2732 syntax is pretty ugly if you don't have MIME-aware 2733 user agents. 2734 Clean up message handling (for display in mailq output). 2735 New setproctitle implementation for 4.4bsd. 2736 Create files (such as ~/dead.letter) using mode FileMode (the 2737 F option value) instead of 0666. 2738 Fix bug causing output of EXPN command to not be fully qualified. 2739 This may cause some problems with UUCP addresses that 2740 will require some config file assistance -- specifically, 2741 the $: part has to include the host name for this output 2742 to make sense. 2743 Fix a problem that sometimes diagnosed errors and still sent the 2744 message if the header syntax was bad. 2745 Fix a bug that caused an error message to be emailed when sendmail 2746 was operating in -bv mode. 2747 Add "ListenQueueSize" keyword to daemon options option (OO) to 2748 set the queue size parameter passed to listen(). You 2749 will normally have to tweak your kernel to up this. 2750 Strip spaces off of beginning of message-id before logging (in 2751 case it was folded across lines). 2752 Tweak compile flags in daemon.c -- there were some cases where 2753 it wouldn't work without NETINET. 2754 Change *file* mailer to output all the usual default headers 2755 (From, Date, Message-Id). It gets used when sending 2756 back error messages. 2757 CONFIG: explicitly catch and diagnose list:; syntax in ruleset 2758 zero -- this is not a valid recipient syntax according 2759 to RFC 821. 2760 CONFIG: add confMIME_FORMAT_ERRORS to send error messages in 2761 MIME format. Defaults to on. 2762 CONFIG: add SMTP_MAILER_FLAGS and UUCP_MAILER_FLAGS to augment 2763 the flags for those mailers. 2764 27656.56/6.27 93/05/01 2766 Fix problem that causes the fallback mail to postmaster 2767 (case ESM_POSTMASTER in savemail()) to not look at 2768 aliases (ugh). 2769 Some more HPUX tweaking (compile flag hpux => __hpux so it 2770 still works in ANSI mode). 2771 Don't try to flock non-regular files when mailing to a file. 2772 In particular, this was a problem if you tried to 2773 send to /dev/null. 2774 Fix a wierd bug that can cause senders to be queued as 2775 recipients if the name server is down when the mail 2776 is initially sent. This hack just ignores sender 2777 deletion (essentially, it sets the MeToo flag) if there 2778 is a TEMPFAIL during processing of the sender address. 2779 Obscure. 2780 Fix a dangling else problem -- from Brian Bullen from University 2781 of Stirling, UK. 2782 Add the "b" mailer flag to force a blank line on the end of 2783 messages. Some brilliant versions of /bin/mail insist 2784 on this but do not add it themselves. 2785 Add the "g" mailer flag to prevent user SMTP from sending 2786 "MAIL From:<>". This is only intended to be a 2787 transitional gesture, and should not be used if at 2788 all possible. It appears that Berkeley and IDA 2789 config files have always handled this properly; the 2790 UK config kit apparently does not. 2791 Don't lowercase and then capitalize header field names -- leave 2792 them with original capitalization. Fixes from Bill 2793 King of Allen-Bradley Company. 2794 Further cleanup and improved reporting of error messages, 2795 particularly conditions that cause messages to be 2796 requeued for future delivery. 2797 Tweak syslog priorities in some cases. 2798 CONFIG: clean up route-addr on UUCP addresses. 2799 28006.55/6.25 93/04/27 2801 HPUX 8.07 compatibility changes in getla() -- I had to make 2802 these changes to get it to work at Berkeley, although 2803 others seem to have been working before (???). 2804 Various patches to XLA code. 2805 Fix problem that causes setuid bit on files to be ignored from 2806 SMTP or in queue runs. Problem noted by Jason Ornstein 2807 of Under The Wire, Inc. 2808 Fix problem that can cause CNAMEs to be ignored. 2809 Generalize getmxrr to match local host in $=w instead of a 2810 single name passed in. 2811 Some cleanup from Eric Wassenaar: 2812 Use FileMailer instead of ProgMailer in two places. 2813 Eliminate duplicate 8th-bit stripping in commaize. 2814 Fix a problem with mis-parsing of backslash escapes 2815 under some circumstances. 2816 NIS map fix (was always including trailing null character) 2817 from Mike Glendinning of Ingres UK. 2818 Add "a" mailer flag to try using ESMTP. It tries the EHLO 2819 command and if that fails falls back to regular SMTP. 2820 Also parses EHLO option keywords. If host supports 2821 SIZE extension, this is added to the MAIL FROM: 2822 command. 2823 Extend "b" option to include a second value which is the 2824 maximum message size this server is willing to accept. 2825 For example, a value of "10/1000000" says that there 2826 must be ten blocks free, and sendmail will reject 2827 any message larger than one megabyte. 2828 Some portability hooks for NeXT (this could be applicable 2829 to Mach in general). You have to create an empty 2830 file called "unistd.h" to get it to compile. 2831 Adjust config values (MAXLINE, MAXATOM, and PSBUFSIZE) to 2832 be more generous. 2833 Add X400-Received: to the list of headers tagged with H_TRACE 2834 in conf.c. From Bill King, Allen-Bradley Co. 2835 28366.54/6.25 93/04/19 2837 Fix problem that caused redefinition of SMTP and QUEUE compile 2838 flags. Pointed out by Jon Forrest of the Sequoia 2000 2839 project at Berkeley. 2840 Properly handle \! hack -- it was treating host\!user as one 2841 token (host!user) instead of three (host, !, user). 2842 Fix from Eric Wassenaar of NIKHEF-H. 2843 Fix compilation problem in getauthinfo() if IDENTPROTO is off. 2844 Turn off DEFNAMES and DNSRCH when getting the hostsignature 2845 (i.e., MX records) in level 1 configuration files; this 2846 matches the old behaviour. From Motonori Nakamura of 2847 Kyoto University. 2848 Improve error message printing -- if sent through an alias, 2849 error messages include the name of the alias in the 2850 message. Unfortunately, in order to make this work 2851 properly in queue runs, this changes the format of the 2852 C line in the qf file. The relatively uselessness of 2853 the previous information was pointed out to me by 2854 Allan E Johannesen of WPI. 2855 Add XLA compile flag to add hooks to Christophe Wolfhugel's 2856 extended load average code. This is still in very early 2857 form. For information regarding the guts of the xla 2858 code, contact Christophe.Wolfhugel@grasp.insa-lyon.fr. 2859 Additional hooks for detecting tempfails in rewriting rules 2860 (that is, in map lookups). 2861 28626.53/6.25 93/04/15 2863 Properly diagnose ruleset zero returning null (instead of a mailer 2864 triple). From Motonori Nakamura of Kyoto University. 2865 More generalization of socket code for other protocols. 2866 Shorten timeouts on reverse name lookups -- since they are done 2867 during connection establishment, long timeouts here can 2868 cause higher level timeouts. This mainly serves to accept 2869 mail from hosts that do not have proper reverse (PTR) DNS 2870 records set up. 2871 Reset e_statmsg before each mailer invocation to avoid bogus 2872 messages in the log. 2873 Redefine $r, $s, and $_ in error envelopes so you don't get 2874 incorrect cruft in the error message. Problem noted by 2875 Motonori Nakamura of Kyoto University. 2876 Fix a problem that can cause failure to return errors to Postmaster 2877 in certain cases. From Motonori Nakamura. 2878 Fix a problem that can cause some systems to give duplicate error 2879 messages when a bad syntax address such as "<a" is presented 2880 to an SMTP server. It doesn't seem to occur on all 2881 machines. From Motonori Nakamura. 2882 Default IDENTPROTO off for Ultrix and HPUX, which apparently have 2883 the interesting "feature" that when they receive a "Host 2884 unreachable" message they closes all open connections to 2885 that host. However, some firewall gateways send this message 2886 if you try to connect to an unauthorized port, such as the 2887 IDENT port (113). Thus, no email can be received from such 2888 hosts. There is some evidence that versions of Ultrix before 2889 4.3 do not have this problem. Thanks to Tom Ivar Helbekkmo 2890 for pointing out this behaviour to me and to Michael Corrigan 2891 of U.C. San Diego for informing me about the HPUX problem. 2892 Allow IPC mailers to return a colon-separated list of hosts in the 2893 $@ clause; these are searched in order as though they were 2894 MX records. 2895 When sending an error report, print the list of addresses tagged 2896 as bad. Requested by Allan E Johannesen of WPI. 2897 Change map function calls to return a status code. This gets 2898 passed back as the result of rewrite. Parseaddr marks 2899 the address as a QUEUEUP address if the return code is 2900 EX_TEMPFAIL. All this to queue properly if the name 2901 server is down. This code is not well tested. This code 2902 changes the interface to map lookup functions (a fifth 2903 parameter, int *statp, is added). Feature requested by 2904 Dan Oscarsson. 2905 Don't delete quotes (in the dequote map) if there are spaces in 2906 the string, since this would cause them to be replaced by 2907 the SpaceSub character. 2908 Accept BODY=8BITMIME on SMTP MAIL command. This isn't advertised 2909 because the 8BIT to 7BIT translation doesn't exist yet. 2910 This does add a "bodytype" field to both envelope and 2911 queue file and a -B command line flag to pass the type in 2912 during direct invocations. 2913 Discard return error messages only on responses to responses to 2914 responses, not on responses to responses. That is, the 2915 algorithm is to try return to sender, then return to 2916 postmaster, then discard. Previously it discarded 2917 immediately if the return to sender pass failed. 2918 CONFIG: back out change to hide unqualified hostnames behind %-hack. 2919 This screws up local aliases and .forward files. 2920 CONFIG: add FEATURE(nocanonify) to turn off calls to $[ ... $]; 2921 some sites only handle completely canonified names. 2922 Requested by John Gardiner Myers of CMU. 2923 CONFIG: some UUCP code was still included even if FEATURE(nouucp) 2924 was specified. 2925 29266.52/6.24 93/04/10 2927 Clean up some minor glitches on error return messages pointed out 2928 by Motonori Nakamura of Kyoto University. 2929 Fix reply() to not reset SmtpReplyBuffer on fatal errors; this 2930 was supposed to reset SmtpMsg Buffer. This makes the 2931 client side code virtually useless. Reported by Allan 2932 E Johannesen of WPI and Phil Brandenberger of Swarthmore. 2933 Better debug messages if fuzzy is disabled, suggested by Allan 2934 E Johannesen of WPI. 2935 Offset SmtpReplyBuffer by four in usersmtp when checking for 2936 loopback. From Eric Wassenaar. 2937 Don't set $s until after runinchild in srvrsmtp -- otherwise 2938 it gets cleared. From Eric Wassenaar. 2939 Implement IDA-style $&x for deferred macro expansion. 2940 More POSIX compatibility. 2941 CONFIG: Hide unqualified hostnames behind %-hack using $s as the 2942 actual sender. This is only done if $r is non-null, that 2943 is, if this is not locally submitted mail. 2944 CONFIG: Add FEATURE(bitdomain) allowing mapping of BITNET host 2945 names to internet domains. A program contributed by 2946 John Gardiner Myers of CMU to create the maps is included 2947 in the contrib directory (in the "misc" tar file). 2948 CONFIG: Add FEATURE(uucpdomain) for a similar mapping for UUCP 2949 hosts. There is currently no tool to create this map. 2950 29516.51/6.23 93/04/04 2952 Add D= mailer flag to specify a path of possible working directories 2953 in which to execute the mailer. This is intended for the 2954 prog mailer; some shells can get upset if they don't have 2955 access to the current directory. 2956 Add RFC 1413 (IDENT) protocol support. This is only very loosely 2957 tested. This adds a $_ macro to be the authenticated 2958 info (in ``user@domain [address]'' form) and debug flag 2959 9 to trace the protocol. 2960 Check for loopbacks in usersmtp instead of srvrsmtp -- there is no 2961 reason for a local agent to not be talking to the localhost 2962 (although the inverse is not true). 2963 Add a few hooks for automated map rebuilding. This is certainly 2964 not done yet. 2965 CONFIG: Have prog mailer specify a path of ``D=$z:/'' -- that is, 2966 user's home directory then the root. 2967 CONFIG: Log RFC 1413 identification in Received: line. 2968 29696.50/6.22 93/04/01 2970 Fixes to requeueing code to make it compute priority, nrcpts, 2971 and the like properly. 2972 29736.49/6.22 93/04/01 2974 Diagnose incorrect privacy flags. Suggested by Bryan Costales 2975 of ICSI. 2976 Some ANSI C fixes. 2977 Arrange to quote backslashes as well as other special characters 2978 in the phrase part of a route-addr. 2979 Some fixes to FallBackMX code suggested by Motonori Nakamura of 2980 Kyoto University. 2981 More vigorous zeroing of CurHostAddr to avoid logging of bogus 2982 host addresses when you are actually just printing 2983 information from the MCI structure; problem noted by 2984 Michael Corrigan of U.C. San Diego. 2985 Don't ignore rest of queue if any job is not runnable. This can 2986 also cause an incorrect job to be lost. Fix from 2987 Eric Wassenaar. 2988 Always respond "quickly" to RCPT command; do alias expansion and 2989 the like later. This also means that mail for lists that 2990 have errors will be acccepted, and an error sent back 2991 later. This is done by instantiating the queue file 2992 and then immediately running and requeueing it. 2993 29946.48/6.22 93/03/30 2995 Fix incorrect diagnosis of infinite loop in ruleset. Problem noted 2996 by several people. 2997 Improve information printed when infinite loops are discovered. 2998 Zero CurHostAddr to fix erroneous internet addresses in log when no 2999 addresses can be bound. Pointed out by Motonori Nakamura 3000 of Kyoto University. 3001 "Probe" SMTP connections using RSET instead of NOOP "just in case". 3002 Suggested by John Gardiner Myers of CMU. 3003 Don't warn about -f if you are setting sender to yourself. 3004 30056.47/6.22 93/03/29 3006 Fix incompatible call to endmailer in smtpquit which causes core 3007 dumps. Noted by Allan E Johannesen of WPI. 3008 HPUX portability changes from Michael J. Corrigan of UC San Diego. 3009 Require MAIL before RCPT command in srvrsmtp.c. This had been 3010 intentional from the 821 draft days when the order wasn't 3011 clear, but is silly now. 3012 Fix bug in nis_magic routine that was initializing parameters 3013 incorrectly. Fix from Takahiro Kanbe of Fuji Xerox 3014 Information Systems Co., Ltd. 3015 Change default for PrivacyFlags in conf.c to 0 -- since it always 3016 "or"s in new values, there was no way to turn off the 3017 AuthWarning stuff. 3018 Add O option to set SMTP daemon options. 3019 Add V option to set fallback MX host. This always sorts at lower 3020 priority than anything it gets from the name server. It 3021 should only be used for environments with very bad network 3022 connectivity. Requested by several people. 3023 Log sending info. It's not clear this is a good idea. 3024 CONFIG: fix typo in mailertable code. Noted by Phil Brandenberger 3025 of Swarthmore. 3026 CONFIG: add confDAEMON_OPTIONS and confFALLBACK_MX to set options 3027 O and V, respectively. 3028 30296.46/6.21 93/03/26 3030 Fix botch in server SMTP that broke transactions that did not 3031 use HELO first (like MH). Fix from Michael Corrigan 3032 of U.C. San Diego. 3033 Fall back to other MX records if there is an error anywhere 3034 in delivery (actually on MAIL or DATA -- RCPT is harder). 3035 Suggested by John Gardiner Myers and Motonori Nakamura. 3036 Revert to non-prototypes -- it turns out that our ANSI C 3037 compiler is more forgiving than most others about 3038 mixing prototyped extern declarations with non-prototyped 3039 function definitions. 3040 Fix a problem with multi-word class matching pointed out by 3041 Neil Rickert. Given: 3042 CX b a.b.c 3043 R$+ $=X $+ $: $1 < $2 > $3 3044 the input "user@a.b.c" failed instead of being properly 3045 rewritten as "user@a.<b>.c". 3046 Neil also convinced me that it was correct that $~ should match 3047 only one token -- the problem is that it's always possible 3048 to add another token, so $~ matches far too eagerly. 3049 30506.45/6.21 93/03/25 3051 Implement multi-word classes (properly!). 3052 30536.44/6.21 93/03/25 3054 Add X-Authentication-Warning: headers to clue users into possible 3055 attempts to forge mail. This is on the authwarnings 3056 privacy flag, but is the default. Suggested by Bryan 3057 Costales of ICSI. 3058 Pass default units for convtime in so they can be more reasonable. 3059 Allow config files to always add a new Comments: header (i.e., 3060 they will be added even if an old one already exists). 3061 Suggested by Bryan Costales of ICSI. 3062 Allow config files to delete an existing Return-Path: header. 3063 These should only be added at final delivery. Suggested 3064 by Bryan Costales of ICSI. 3065 Some debugging additions. Suggested by Bryan Costales of ICSI. 3066 Clean up logging of Family 0 addresses. Noted by David Muir 3067 Sharnoff and others. 3068 Add a "dequote" map class. This allows config files to strip 3069 quotes off of addresses. Note that this is not a builtin 3070 map, just a class -- so you have to define the map 3071 using the K line. 3072 Fix a bug in the queueup() loop getting a locked tf where in 3073 very odd cases it can fall off the bottom and core dump. 3074 Of course, it was P{r Emanuelsson who found it.... 3075 Open a new transcript when splitting an envelope. Problem found 3076 by Allan E Johannesen of WPI. 3077 Improved error output in endmailer if the mailer core dumps. 3078 CONFIG: Fix typo in UUCP mailer definition. 3079 CONFIG: Default several of the new options on: eight bit input, 3080 privacy flags set to "authwarnings", and message warning 3081 set to 4h. 3082 CONFIG: Use dequote map. 3083 30846.43/6.20 93/03/23 3085 Fix problem with assumption of an sa_len field in a generic 3086 sockaddr -- it turns out that most vendors haven't 3087 picked up this (very important) fix. 3088 Change compilation flags for daemon code -- select one or both 3089 of NETINET or NETISO, but don't ever set DAEMON manually. 3090 CONFIG: add FEATURE(mailertable) to do IDA-style mailertables. 3091 30926.42/6.19 93/03/19 3093 Use Postmaster as default fallback return address, not root. 3094 POSIX changes for file descriptor handling. 3095 Diagnose errors writing new queue file. 3096 If you change the owner using an owner- alias, also change the 3097 error mode to EM_MAIL so that errors don't get dropped 3098 into an inappropriate directory. Problem noted by 3099 Allan E Johannesen of WPI. 3100 If you are su'ed to root, send email as who you really are, not 3101 as root. From Brian Kantor of U.C. San Diego. 3102 Allow warning messages to be sent after a configurable interval 3103 has passed without delivery. The message is sent only 3104 once per envelope. This changes the format of the qf 3105 file to have an F line, and the format of the T option 3106 to accept take the format "return/warn" (both intervals). 3107 Don't force all local names to lower case -- this was left over 3108 from the wierd handling of case mapping on aliases. It 3109 is now driven (as expected) by the "u" mailer flag. 3110 Problem noted by P{r Emanuelsson. 3111 Fix problem that caused headers on returned email to be trashed; 3112 they were getting freed, but are still accessible via 3113 BlankEnvelope. 3114 Fix problem that caused bogus ids to be created on returned 3115 mail. 3116 Add support for ISO and other non-INET networking. This is by 3117 no means finished yet. This does assume a lot of other 3118 system support, like a version of gethostbyname that 3119 returns non-AF_INET addresses. 3120 CONFIG: change default on prog mailer to keep upper case in 3121 user names (i.e., in the program command line). 3122 CONFIG: strip trailing dots off of hosts in uucp mailer before 3123 convert to bang format. 3124 CONFIG: create new "relay" mailer for $R (LOCAL_RELAY) and $H 3125 (MAIL_HUB) delivery that doesn't add local domain. Note 3126 that this violates 821, but is probably "more correct" 3127 for what we are trying to do. Problem pointed out by 3128 Michael Graff of Iowa State. 3129 31306.41/6.18 93/03/18 3131 Clean up unnecessary creates of queue ids (i.e., empty qf files) 3132 when not needed, such as when starting up an SMTP 3133 connection. 3134 Fix problem where split envelopes aren't instantiated in the queue. 3135 This is quite a serious bug. 3136 Owner- aliases had problems with leading spaces causing a 3137 premature delimitation. 3138 31396.40/6.18 93/03/18 3140 Have ending 250 (after DATA) include the id; suggested by 3141 Brian Kantor of UC San Diego. 3142 Add logging on envelope splitting. 3143 Change queue ids to have one more letter encoding the hour of 3144 the day so that during a single day there is a greater 3145 likelihood of uniqueness; requested by Brian Kantor. 3146 31476.39/6.18 93/03/18 3148 Fix minor compile problem if LOCKF is defined. 3149 Define size of tobuf in conf.h. Observed by Toshinari Takahashi 3150 of Toshiba. 3151 Restore e_sender -- this is equivalent to e_from.q_paddr without 3152 decorations such as angle brackets and comments. 3153 OSF/1 on Alpha changes from Allan E Johannesen of WPI. 3154 CONFIG: fix typo in S3 for list syntax (;: => :;). Thanks to 3155 Christopher Hoover for noting the problem. 3156 31576.38/6.17 93/03/17 3158 Pass envelope to disconnect to avoid another use of CurEnv, which 3159 can apparently end up being null at inopportune times. 3160 Log "received from" as "relay=" for consistency (suggested by 3161 John Gardiner Myers). 3162 Fix major bug in header handling: if no From: line existed in 3163 the header (so sendmail inserts one), and the sender is 3164 an alias that has an owner, the From: line shows the 3165 owner (as well as the envelope). Fixed by early binding 3166 the headers (which will change debugging output). 3167 HPUX portability patches from Michael J. Corrigan of UC San Diego. 3168 Some attempts to adapt better to out of open file conditions. 3169 Some changes to ctladdr handling in queue files. 3170 31716.37/6.17 93/03/16 3172 MAJOR CHANGE: delete e_sender and e_returnpath (why are these 3173 different from e_from?) and $< macro. 3174 Log correct IP address in relay= field even if the connection 3175 times out. 3176 Log "received from [RESPONSE]" on EF_RESPONSE messages (from 3177 John Gardiner Myers). 3178 Fixes to SysExMsg logging (sometimes just got "message: %s" 3179 instead of "message: error message"), noted by Eric 3180 Wassenaar. Also reported by Motonori Nakamura. 3181 Improvements to MX piggybacking code, from Motonori Nakamura. 3182 Fix case where CurHostName points to an auto variable that has 3183 been deallocated (from Motonori Nakamura). 3184 Fix bug causing newlines to be included in aliases if option 3185 "n" (check alias RHS) is set; bug noted by David Muir 3186 Sharnoff. 3187 Fix problem causing user names that should be mapped to lower 3188 case to not be mapped if they are sent during a queue 3189 run. This greatly simplifies the case mapping code. 3190 Problem noted by Allan E Johannesen of WPI. 3191 Don't do recipient address rewriting in buildaddr. This 3192 improperly did recipient rewriting on sender addresses, 3193 and just seems bogus in general -- but the change could 3194 break some .cf files. 3195 Pass TZ envariable to child processes for System V. 3196 CONFIG: allow LOCAL_RULE_1 and LOCAL_RULE_2 if you want to 3197 define those rulesets. 3198 KNOWN PROBLEM: I have seen some problems on SunOS that causes 3199 the User Data Base to give errors on some addresses. I 3200 have tracked the problem back at least as far as 93.02.15 3201 (version 6.22). Running with debugging on makes it 3202 go away, so I conclude that it is referencing uninitialized 3203 stack data. I haven't been able to track this down yet. 3204 32056.36/6.16 93/03/08 3206 Allow local mailer to specify $@host -- this lets you assign the 3207 "foo" part of jgm+foo to $h for passing in to the local 3208 mailer. 3209 Additional debug printing in getcanonname (show query type). 3210 Don't add the e_fromdomain on sender addresses -- this interacts 3211 wierdly with the owner- code. 3212 Improve delivery logging to not log obvious or meaningless stuff. 3213 Include numeric IP address in Received: lines per RFC 1123 section 3214 5.2.8. 3215 Fixed a bug in checking stat() return value if restrictmailq is 3216 set. Also, check the entire group set instead of just the 3217 primary group. Both from John Gardiner Myers. 3218 Don't have usrerr automatically print errno, since this is often 3219 misleading. 3220 Use transienterror() in makeconnection after connect() fails and 3221 in openmailer after execve() fails (from Eric Wassenaar). 3222 Also moved transienterror() from util.c to conf.c. 3223 Clean up from= logging on response messages. 3224 Undo patch allowing prescan to return a null vector -- it breaks 3225 too many things. 3226 Config: FEATURE(notsticky) lets you use UDB for everything coming 3227 in to the machine, even if it is specifically targetted 3228 to this machine. Without it, UDB is bypassed if the user 3229 name is fully qualified. 3230 Config: fix another minor botch with <> (local mailer wasn't 3231 mapping them properly). 3232 32336.35/6.15 93/03/05 3234 Fix getrealhostname to return null if sinlen <= 0 -- this can 3235 occur if stdin is a pipe. 3236 Avoid infinite loop in getcanonname if name server return 3237 NO_DATA (for example). 3238 Config: avoid having C flag qualify list syntax and error syntax. 3239 32406.34/6.14 93/03/05 3241 Fix logging in deliver to not pass too many parameters to Ultrix 3242 versions of syslog. 3243 Don't write the pid file until after the daemon has actually 3244 opened and conditioned the connection. 3245 Consider addresses "different" if their q_uids differ (so that 3246 two users forwarding to the same program will be seen 3247 as different, rather than the same). 3248 Fix problem with bad parameters in main() -- they set ExitStat 3249 but don't exit. 3250 Fix null pointer references through RealHostName -- painfully 3251 discovered by Allan E Johannesen of WPI. 3252 Fix bug causing user@@localhost to core dump (yuch). 3253 Config: don't put two @host.dom.ain on users in $=E in SMTP 3254 mailer. Also, catch user@ (no host) in ruleset 0. 3255 32566.33/6.13 93/03/03 3257 Config: add confCW_FILE as the name of the cw configuration file 3258 (defaults to /etc/sendmail.cw). From P{r Emanuelsson. 3259 Allow prescan to return a pointer to an empty list -- this is 3260 not an error. Also, clean up error reporting to avoid 3261 double errors (prescan reports once, then the caller 3262 reports again). 3263 Changes to avoid trusting T_ANY queries -- run them, but if you 3264 don't get the info you expected, do T_A and T_MX queries 3265 anyhow. This also fixes an oversight where _res.options 3266 bits were being ignored. 3267 If PRIV_NOVRFY is set, use 252 response code instead of 502 per 3268 RFC 1123 section 5.2.3. It's not 100% clear that this 3269 is correct, but it probably works better with stupid 3270 mailers that do a VRFY and only check the first digit. 3271 32726.32/6.12 93/03/02 3273 Fix uninitialized variable "protocol" in smtp code. 3274 Include <unistd.h> in sendmail.h -- move towards POSIX/ANSI. 3275 Additional hooks for RFC 1427 (ESMTP SIZE extension). This 3276 includes requiring that enoughspace() know the system 3277 block size, which will undoubtedly break most ports. 3278 Trace flag 19 in use for srvrsmtp.c. 3279 Additional logging -- notably the sending mailer name. This 3280 also changes the delivery logging to strict field=value 3281 syntax. 3282 Fix some problems with messages getting sent even to addresses 3283 that had been marked bad -- from Eric Wassenaar. 3284 More WIDE changes: accept host name inside [...] as non-MXed 3285 host. This is intended ONLY for use inside firewalled 3286 environments, where the MX points at the gateway. 3287 Change .cf file conventions so that mapping for <> addresses 3288 don't have an @ in them (to avoid confusing the C mailer 3289 flag). Pointed out by Neil Rickert. 3290 Config extensions for Sam Leffler's FlexFAX software. 3291 32926.31/6.10 93/02/28 3293 Fix some more bugs in alias owner code -- there were some wierd 3294 cases where an error in a non-aliased name would override 3295 the return info in an aliased name with an owner. 3296 Changes from WIDE Project, forwarded to me by Motonori Nakamura: 3297 Log actual delivery host (after MX et al); from 3298 yasuhiro@dcl.co.jp. 3299 Log daemon startup. 3300 Deliver Postmaster copies without a body. 3301 Better logging of SMTP senders. 3302 Send all program email as daemon even when local. 3303 As requested in various forms from many people, accept -qIstring 3304 to limit queue runs to jobs with queue-id matching string. 3305 Similarly for -qRstring for recipients, -qSstring for 3306 senders. 3307 Initial hooks for ESMTP support (see RFC 1425). 3308 Fixed a syntax error in the UUCP mailer specification that caused 3309 core dumps on startup. 3310 Check for missing A= or P= arguments in mailer definitions. 3311 33126.30/6.10 93/02/27 3313 Require FROZENCONFIG compilation flag to include frozen 3314 configuration code. Frozen configuration is really 3315 not a very good idea any more, particularly in shared 3316 library environments. 3317 Do better checking of errno after opens of :include: and .forward 3318 files to defer delivery on network and other transient 3319 errors. Suggestion from Craig Everhart. 3320 Fix minor botch in read timeout macro processing. 3321 Add FEATURE(nouucp) to config files for sites that know absolutely 3322 nothing about UUCP. 3323 Add built cf files to distribution tape and clarify how to build 3324 them if you don't have the Berkeley make. 3325 Some sizeof(long) portability changes for the Alpha, from Allan 3326 E Johannesen. 3327 Add "restrictmailq" privacy flag -- if set, only people in the same 3328 group as your queue directory can print the queue. If you 3329 set this, be sure you also restrict access to log files.... 3330 Fix another bug in owner-list stuff that can cause data files to 3331 be "lost". 3332 Fix a bug with queue runs that cause forwards to yourself to go 3333 into alias/forwarding loops. I'm still iffy about this 3334 fix. 3335 Fix from Eric Wassenaar for suppression of return message code. 3336 33376.29/6.9 93/02/24 3338 Fix yet another problem in alias owner code -- put the wrong return 3339 address on the enclosed return-to-sender letter. 3340 33416.28/6.9 93/02/24 3342 Fix botch in alias owner code that caused it to not operate if the 3343 error was detected locally. 3344 33456.27/6.9 93/02/24 3346 M_LOCAL => M_LOCALMAILER to avoid conflict with Ultrix include 3347 file <sys/mount.h>. 3348 Miscellaneous bug fixes from Eric Wassenaar: 3349 sendmail -bv -t logs the from line even though in verify 3350 mode only. 3351 sendmail -v can go into queue mode if shouldqueue returns 3352 TRUE. 3353 Add route-addr pruning per RFC 1123 section 5.3.3. This can be 3354 disabled using the "R" option. 3355 Delete (always undocumented) -R flag (save original recipients); 3356 there are ways to syslog(3) these now. 3357 Clean up SMTP reply codes -- specify them as needed in the code, 3358 instead of in conf.c -- this was needed during the NCP to 3359 TCP transition, but seems silly now. This also changes 3360 parameters to message and nmessage. 3361 Have mailstats read the .cf file to find the sendmail.st file and 3362 get text versions of mailer names. An initial version of 3363 this code was provided by Tuominen Keijo (although the 3364 comments indicate the good bits were written by "E.V."). 3365 Add yet more System V compatibility hacks. 3366 Fix bug in VRFY code (assumes everything must be a local user). 3367 Allow specification of any of the hard-wired pathnames in the 3368 Makefile. 3369 Delete concept of "trusted users" -- this really didn't provide 3370 any security anyway, and caused some problems. 3371 Delete last vestige of support for the word "at" as an equivalent 3372 to the character "@". 3373 Propagate owner-foo alias information into the envelope sender. 3374 Based on code from John Gardiner Myers. This is a major 3375 semantic change -- beware! 3376 Allow $@ on LHS to indicate "match zero" -- this is used to match 3377 the null expression. 3378 33796.26/6.8 93/02/21 3380 Don't "lose" queue runs. Very important fix from (who else?) 3381 Eric Wassenaar. 3382 Completely reset state on RSET command -- from Eric Wassenaar. 3383 Send error messages and return receipts using an envelope sender 3384 of <> regardless of the setting of $n. Rewriting rules 3385 can undo this if they feel the necessity, as might be 3386 needed for networks that don't understand the syntax. 3387 This is permitted by RFC 821 section 3.6 and required by 3388 RFC 1123 section 5.3.3. THIS REQUIRES VERSION 4 CONFIG 3389 FILES because the rulesets must be able to parse <> 3390 properly. 3391 Don't ever send error messages to "<>" -- they will get sent to 3392 the local postmaster or dumped in /usr/tmp/dead.letter 3393 instead. Per RFC 1123 section 5.3.3. 3394 Explicitly check for email to yourself as a dotted quad. You 3395 have to call $[ [ ... ] $] to get this. 3396 Up the message timeout to five days per RFC 1123 section 5.3.1.1. 3397 Make all read timeouts individually configurable, as strongly 3398 recommended by RFC 1123 section 5.3.2. 3399 Use f_bavail (blocks available to regular users) instead of f_bfree 3400 (blocks available to superuser) in free block checks. 3401 Change $d macro to be the current time, not the origination time, 3402 since this is consistent with how it is used now. 3403 Generalization of enoughspace from Eric Wassenaar covering 3404 SGI, Apollo, HPUX, Ultrix, and SunOS. 3405 Ignore process group signals -- some front ends can do this if 3406 you kill a window too quickly. From Eric Wassenaar. 3407 Change umask to 022. 3408 34096.25/6.8 93/02/20 3410 Close all cached connections before calling mailers and after 3411 forking for delivery (caused double closes which resulted 3412 in false errors). 3413 Add FEATURE(redirect) in config files -- this allows you to alias 3414 old addresses to a pointer to the new address that will 3415 give a 551 error message, but not deliver the mail. 3416 Some code changes to make the 551 errors look pretty. 3417 Names of M4 program paths in config files have changed -- they 3418 are all XXX_MAILER_PATH now, to match XXX_MAILER_FLAGS. 3419 Fix a bug in the QSELFREF code having to do with empty .forward 3420 files, reported by Eric Wassenaar. 3421 Add option "p" (privacy flags); this allows you to tune how 3422 picky the SMTP server will be. This also adds the 3423 confPRIVACY_FLAGS M4 macro in the config files. 3424 Add option "b" (minimum blocks free). If there are fewer than 3425 this number of blocks free on the filesystem containing 3426 the queue directory, the SMTP MAIL command will return 3427 a 452 response and ask you to try again later. This 3428 also adds the confMIN_FREE_BLOCKS M4 macro in the config 3429 files. 3430 Made VRFY just verify (doesn't expand aliases and .forward files); 3431 EXPN does full expansion. RCPT in queue-only mode also 3432 doesn't chase aliases and .forward. 3433 34346.24/6.7 93/02/19 3435 Increase the number of domain search entries in domain.c to allow 3436 for the extra "" entry indicating the root domain. 3437 Reported by Motonori Nakamura of Kyoto U. 3438 Add a "SMART_HOST" in the configs for UUCP-connected sites that 3439 want to forward all mail with extra "@"s to that site. 3440 Also allows SMART_HOST, LOCAL_RELAY, and MAIL_HUB to 3441 be specified as ``mailer:hostname'' to use an alternate 3442 mailer. 3443 Clarified and updated some wording in the Operations Guide. 3444 Add the "c" mailer flag -- this suppresses all comment parts of 3445 addresses (requested by John Curran of NEARnet). 3446 Have -v print prompts in -bt mode even if stdin is not a terminal 3447 (default behaviour is to be silent if not reading from 3448 a terminal). Suggested by Bryan Costales, ICSI. 3449 Move the metacharacters from C0 space (\001-\037) into C1 space 3450 (\201-\237). This also fixes a bunch of potential bugs 3451 with G1 characters (\240-\276) in headers relating to 3452 negative numbers passed to isspace() et al. 3453 Add YP_LAST_MODIFIED and YP_MASTER_NAME to DBM version of alias 3454 database if YPCOMPAT is #defined. Enhancement from 3455 Takahiro Kanbe of Fuji Xerox Information Systems Co., Ltd. 3456 Add "list" Precedence (-30); this can be used with old sendmails 3457 which will map to precedence 0 (which will return error 3458 messages). Suggested by Stephen R. van den Berg. 3459 Many bug fixes from Eric Wassenaar of the National Institute for 3460 Nuclear and High-Energy Physics, Amsterdam: 3461 Clear timeouts properly on open failures in include(). 3462 Don't dereference through NULL if no home directory found. 3463 Re-establish SIGCHLD signal on System 5 in reapchild(). 3464 Avoid NULL pointer reference on -pFOO flag. 3465 Properly handle backslash escapes in comments. 3466 Correctly check reply status on SMTP NOOP command. 3467 Properly save SMTP error message if peer gives 3468 "Service Shutting Down" message. 3469 Avoid writing to the transcript if it couldn't be opened. 3470 Signal errors in SMTP children to parent properly. 3471 Handle self references in a list more globally (include a 3472 QSELFREF bit in the address flags). This enhancement 3473 was suggested by Eric Wassenaar. 3474 Use initgroups() in hpux, even though it's System-V based. The 3475 HASINITGROUPS compile flag can set this on other systems. 3476 This HPUX behaviour was pointed out by Eric Wassenaar. 3477 34786.23/6.6 93/02/16 3479 Clean up handling of LogLevel to make it easier to figure out 3480 what's on what level. 3481 Change log levels to have some consistency: 3482 1 serious system failures, security problems 3483 2 lost communications, protocol failures 3484 3 other serious failures 3485 4 minor errors 3486 5 message collection 3487 6 vrfy logging, creation of return-to-sender 3488 7 delivery failures 3489 8 delivery successes 3490 9 delivery tempfails (queue ups) 3491 10 database expansion 3492 >64 debugging 3493 Allow IDA-style separated processing on S= and R= in Mailer 3494 definition lines. Note that rulesets 1 and 2 are 3495 still used for both addresses as before. Bruce Lilly 3496 gave a convincing argument that RFC976 insists on 3497 this behaviour. 3498 Added some time zones to arpatounix -- they may not be in the 3499 standards, but they are in use. However, I may delete 3500 arpatounix entirely -- there appears to be no reason 3501 for it to exist. 3502 Change to UUCP mailer (in cf directory) to try to do a saner job. 3503 I'm still not certain about this mailer in general. 3504 35056.22/6.5 93/02/15 3506 Fix bug that prevents saving letters in ~/dead.letter. 3507 Don't add angle brackets in VRFY command if angle brackets already 3508 exist in the address. 3509 Fix bogus error message in udbexpand. 3510 Null terminate host buffers in buildaddr (broken in 6.21) -- 3511 IMPORTANT FIX!! 3512 35136.21/6.5 93/02/15 3514 Fix another incorrect error message in alias.c, found by Azuma 3515 Okamoto. 3516 Fix a couple of problems in the more-configurable config files, 3517 found by Tom Ivar Helbekkmo. 3518 Fix problem with quoted :include: entries. 3519 Don't duplicate the filename on verbose printing of .forward and 3520 :include: contents. 3521 Extend size of prescan buffer (to allow bigger addresses). Also, 3522 detect some buffer overflows. 3523 Log user SMTP protocol errors (log level 4). 3524 35256.20/6.4 93/02/14 3526 Fix another problem in the MCI state machine caused when there 3527 were errors generated from the other end to commands 3528 other than RCPT. 3529 35306.19/6.4 93/02/14 3531 Include load average support for DEC Alpha running OSF/1. 3532 Fix multiple-response problem with errors in MAIL From: line. 3533 Fix SMTP reply codes for invalid address syntaxes (give 501; 3534 never give multiple error messages for a single message). 3535 Fix problem where a cached connection timeout rejects all 3536 later connects to that host. 3537 Fix incorrect error message if alias.c is compiled with DBM only. 3538 Additional changes to fix nested conditionals (from Bruce Lilly). 3539 Recover more gracefully from operating system failures, particularly 3540 NULL returns from openmailer (from Noritoshi Demizu, 3541 OMRON Corporation). 3542 Log forward, alias, and userdb expand operations on log level 10; 3543 concept suggested by P{r (Pell) Emanuelsson. 3544 Changes for HPUX 8.07 compatibility. 3545 35466.18/6.4 93/02/12 3547 Allow any config option to be set using an M4 define. 3548 Change UNAME compile flag to HASUNAME for IDA compatibility 3549 (besides, it's a better name). 3550 Note in README that on SunOS it must be linked -Bstatic. 3551 Fairly major change in domain.c to handle wildcard MX records 3552 more rationally. NOTE: the "w" option (no wildcard MX 3553 records match local domain) has been eliminated. 3554 Fix some unset variable references pointed out by Bruce Lilly. 3555 Fix host name in process titles when using cached connection. 3556 35576.17/6.3 93/01/28 3558 Fix System 5 compatibility changes to be compatible with the rest 3559 of the world. 3560 35616.16/6.3 93/01/28 3562 Experimental fix for problem handling errors in the SMTP 3563 protocol in conjunction with connection caching. 3564 System 5 compatibility changes. 3565 35666.15/6.3 93/01/26 3567 Fix a bug that causes local mail delivered using -odq to be 3568 eliminated as a duplicate (because it matched the 3569 ctladdr, now passed in as a C line). These changes 3570 are pretty tricky...... 3571 35726.14/6.3 93/01/25 3573 Add debugging for some MCI errors. 3574 35756.13/6.3 93/01/22 3576 Fix -e compatibility flag to take a value. 3577 Fix a couple of minor compilation warnings on Sun cc. 3578 Improve error messages in a few cases to be more self-explanatory. 3579 35806.12/6.3 93/01/21 3581 Fix yet-another problem with environment handling, pointed out 3582 by Yoshitaka Tokugawa and Tom Ivar Helbekkmo. 3583 Some heuristics to try to limit resource exhaustion problems 3584 if a downstream host has been down for a long time. 3585 Fix problem with incorrect host name being logged in "Connection 3586 timed out" messages (from Tom Ivar Helbekkmo). 3587 Fix some ANSI C problems (from Takahiro Kanbe). 3588 Properly log message sender on returned mail during queue run. 3589 Count number of recipients properly. 3590 Fix a problem in yp map code. 3591 Diagnose "message timed out" (from Motonori Nakamura). 3592 35936.11/6.3 93/01/20 3594 Fix problem with address delimitor inside quotes. 3595 Define $k and $=k to be the UUCP name (from the uname call) 3596 based on code from Bruce Lilly. 3597 35986.10/6.2 93/01/18 3599 Implement arpatounix (largely code from Bruce Lilly). 3600 Log more info (suggested by John Myers). 3601 Allow nested $?...$|...$. (inspired by code from Bruce Lilly of 3602 Sony US). 3603 POSIX compatibility (noted by Keith Bostic). 3604 Handle SMTP MAIL command errors properly (urged by several people, 3605 notably John Myers of CMU). 3606 Do early diagnosis of .cf errors (notably referencing a RHS 3607 substitution that isn't on the LHS). 3608 Adjust checkpointing to better handle batched recipients, suggested 3609 by John Myers. 3610 Fix miscellaneous bugs. 3611 (config files:) Implement MAIL_HUB for all local mail (to handle 3612 NFS-mounted directories) as urged by Tom Ivar Helbekkmo 3613 of the Norwegian School of Economics. 3614 36156.9/6.1 93/01/13 3616 Environment handling simplification/bug fix -- child processes 3617 get a minimal, fixed environment. This avoids different 3618 behaviour in queue runs. 3619 Handle commas inside comments properly. 3620 Properly limit large messages submitted in -obq mode. 3621 36226.8/6.1 93/01/10 3623 Check mtime of thaw file against .cf and sendmail binary, based on 3624 code from John Myers. 3625 36266.7/6.1 93/01/10 3627 MX piggybacking, based on code from John Myers@CMU. 3628 Allow checkcompat to return -1 to mean tempfail. 3629 Bug fix in m_mno computation. 3630 36316.6/6.1 93/01/09 3632 Tuning of queueing functions as recommended by John Gardiner Myers. 3633 Return mail headers (no body) on messages with negative precedence. 3634 Minor other bug fixes. 3635 36366.5/6.1 93/01/03 3637 Fix botch causing queued headers to have ?XX? prefixes. 3638 36396.4/6.1 93/01/02 3640 Changes to recognize special mailer types (e.g., file) early. 3641 36426.3/6.1 93/01/01 3643 Pass timeouts to sfgets. 3644 Check for control characters in addresses. 3645 Fixed deferred error reporting. 3646 Report duplicate aliases. 3647 Handle mixed case recursive aliases. 3648 Misc bug fixes. 3649 36506.2/6.1 92/12/30 3651 Put return-receipt-to on a conf.c flag (but don't set it). 3652 Fix minor syslog problem. 3653