1divert(-1) 2# 3# Copyright (c) 1983 Eric P. Allman 4# Copyright (c) 1988 The Regents of the University of California. 5# All rights reserved. 6# 7# %sccs.include.redist.sh% 8# 9divert(0) 10 11VERSIONID(`@(#)proto.m4 6.47 (Berkeley) 06/08/93') 12 13MAILER(local)dnl 14 15ifdef(`_OLD_SENDMAIL_', 16`define(`_SET_96_', 6)dnl 17define(`_SET_97_', 7)dnl', 18`# level 4 config file format 19V4 20define(`_SET_96_', 96)dnl 21define(`_SET_97_', 97)dnl') 22 23################## 24# local info # 25################## 26 27CP. 28 29Cwlocalhost 30ifdef(`USE_CW_FILE', 31`# file containing names of hosts for which we receive email 32CONCAT(`Fw', confCW_FILE)', `dnl') 33 34ifdef(`UUCP_RELAY', 35`# UUCP relay host 36CONCAT(DY, UUCP_RELAY) 37CPUUCP 38 39')dnl 40ifdef(`BITNET_RELAY', 41`# BITNET relay host 42CONCAT(DB, BITNET_RELAY) 43CPBITNET 44 45')dnl 46ifdef(`CSNET_RELAY', 47`# CSNET relay host 48CONCAT(DC, CSNET_RELAY) 49CPCSNET 50 51')dnl 52ifdef(`FAX_RELAY', 53`# FAX relay host 54CONCAT(DF, FAX_RELAY) 55CPFAX 56 57')dnl 58ifdef(`SMART_HOST', 59`# "Smart" UUCP relay host 60CONCAT(DS, SMART_HOST) 61 62')dnl 63ifdef(`MAILER_TABLE', 64`# Mailer table (overriding domains) 65Kmailertable MAILER_TABLE 66 67')dnl 68# who I send unqualified names to (null means deliver locally) 69CONCAT(DR, ifdef(`LOCAL_RELAY', LOCAL_RELAY)) 70 71# who gets all local email traffic ($R has precedence for unqualified names) 72CONCAT(DH, ifdef(`MAIL_HUB', MAIL_HUB)) 73 74# my official hostname ($w or $w.$D) 75CONCAT(Dj$w, ifdef(`NEED_DOMAIN', .$D)) 76 77# who I masquerade as (can be $j) 78CONCAT(DM, ifdef(`MASQUERADE_NAME', MASQUERADE_NAME, $j)) 79 80# class L: names that should be delivered locally, even if we have a relay 81# class E: names that should be exposed as from this host, even if we masquerade 82CLroot 83CEroot 84undivert(5)dnl 85 86# operators that cannot be in local usernames (i.e., network indicators) 87CO @ % ifdef(`_NO_UUCP_', `', `!') 88 89# a class with just dot (for identifying canonical names) 90C.. 91 92ifdef(`_OLD_SENDMAIL_', `dnl', 93`# dequoting map 94Kdequote dequote') 95 96undivert(6)dnl 97 98###################### 99# Special macros # 100###################### 101 102# SMTP initial login message 103CONCAT(De, confSMTP_LOGIN_MSG) 104 105# UNIX initial From header format 106CONCAT(Dl, confFROM_LINE) 107 108# my name for error messages 109CONCAT(Dn, confMAILER_NAME) 110 111# delimiter (operator) characters 112CONCAT(Do, confOPERATORS) 113 114# format of a total name 115CONCAT(Dq, ifdef(`confFROM_HEADER', confFROM_HEADER, 116 ifdef(`_OLD_SENDMAIL_', `$g$?x ($x)$.', `$?x$x <$g>$|$g$.'))) 117include(`../m4/version.m4') 118 119############### 120# Options # 121############### 122 123# strip message body to 7 bits on input? 124CONCAT(O7, confSEVEN_BIT_INPUT) 125 126# wait (in minutes) for alias file rebuild 127CONCAT(Oa, confALIAS_WAIT) 128 129# location of alias file 130CONCAT(OA, ifdef(`ALIAS_FILE', ALIAS_FILE, /etc/aliases)) 131 132# minimum number of free blocks on filesystem 133CONCAT(Ob, confMIN_FREE_BLOCKS) 134 135# substitution for space (blank) characters 136CONCAT(OB, confBLANK_SUB) 137 138# connect to "expensive" mailers on initial submission? 139CONCAT(Oc, confCON_EXPENSIVE) 140 141# checkpoint queue runs after every N successful deliveries 142CONCAT(OC, confCHECKPOINT_INTERVAL) 143 144# default delivery mode 145CONCAT(Od, confDELIVERY_MODE) 146 147# automatically rebuild the alias database? 148CONCAT(OD, confAUTO_REBUILD) 149 150# error message header/file */ 151ifdef(`confERROR_MESSAGE', 152 concat(OE, confERROR_MESSAGE), 153 #OE/etc/sendmail.oE) 154 155# error mode 156ifdef(`confERROR_MODE', 157 concat(Oe, confERROR_MODE), 158 #Oep) 159 160# save Unix-style "From_" lines at top of header? 161CONCAT(Of, confSAVE_FROM_LINES) 162 163# temporary file mode 164CONCAT(OF, confTEMP_FILE_MODE) 165 166# match recipients against GECOS field? 167CONCAT(OG, confMATCH_GECOS) 168 169# default GID 170CONCAT(Og, confDEF_GROUP_ID) 171 172# maximum hop count 173CONCAT(Oh, confMAX_HOP) 174 175# location of help file 176CONCAT(OH, ifdef(`HELP_FILE', HELP_FILE, /usr/lib/sendmail.hf)) 177 178# ignore dots as terminators in incoming messages? 179CONCAT(Oi, confIGNORE_DOTS) 180 181# Insist that the BIND name server be running to resolve names 182ifdef(`confBIND_OPTS', 183 CONCAT(OI, confBIND_OPTS), 184 #OI) 185 186# deliver MIME-encapsulated error messages? 187CONCAT(Oj, confMIME_FORMAT_ERRORS) 188 189# Forward file search path 190ifdef(`confFORWARD_PATH', 191 CONCAT(OJ, confFORWARD_PATH), 192 #OJ/var/forward/$u:$z/.forward.$w:$z/.forward) 193 194# open connection cache size 195CONCAT(Ok, confMCI_CACHE_SIZE) 196 197# open connection cache timeout 198CONCAT(OK, confMCI_CACHE_TIMEOUT) 199 200# use Errors-To: header? 201CONCAT(Ol, confUSE_ERRORS_TO) 202 203# log level 204CONCAT(OL, confLOG_LEVEL) 205 206# send to me too, even in an alias expansion? 207CONCAT(Om, confME_TOO) 208 209# verify RHS in newaliases? 210CONCAT(On, confCHECK_ALIASES) 211 212# default messages to old style headers if no special punctuation? 213CONCAT(Oo, confOLD_STYLE_HEADERS) 214 215# SMTP daemon options 216ifdef(`confDAEMON_OPTIONS', 217 CONCAT(OO, confDAEMON_OPTIONS), 218 #OOPort=esmtp) 219 220# privacy flags 221CONCAT(Op, confPRIVACY_FLAGS) 222 223# who (if anyone) should get extra copies of error messages 224ifdef(`confCOPY_ERRORS_TO', 225 CONCAT(OP, confCOPY_ERRORS_TO), 226 #OPPostmaster) 227 228# slope of queue-only function 229ifdef(`confQUEUE_FACTOR', 230 CONCAT(Oq, confQUEUE_FACTOR), 231 #Oq600000) 232 233# queue directory 234CONCAT(OQ, ifdef(`QUEUE_DIR', QUEUE_DIR, /var/spool/mqueue)) 235 236# read timeout -- now OK per RFC 1123 section 5.3.2 237ifdef(`confREAD_TIMEOUT', 238 CONCAT(Or, confREAD_TIMEOUT), 239 #Ordatablock=10m) 240 241# queue up everything before forking? 242CONCAT(Os, confSAFE_QUEUE) 243 244# status file 245CONCAT(OS, ifdef(`STATUS_FILE', STATUS_FILE, /etc/sendmail.st)) 246 247# default message timeout interval 248CONCAT(OT, confMESSAGE_TIMEOUT) 249 250# time zone handling: 251# if undefined, use system default 252# if defined but null, use TZ envariable passed in 253# if defined and non-null, use that info 254ifelse(confTIME_ZONE, `USE_SYSTEM', `#Ot', 255 confTIME_ZONE, `USE_TZ', `', 256 `CONCAT(Ot, confTIME_ZONE)') 257 258# default UID 259CONCAT(Ou, confDEF_USER_ID) 260 261# list of locations of user database file (null means no lookup) 262OU`'ifdef(`confUSERDB_SPEC', `confUSERDB_SPEC') 263 264# fallback MX host 265ifdef(`confFALLBACK_MX', 266 CONCAT(OV, confFALLBACK_MX), 267 #OVfall.back.host.net) 268 269# load average at which we just queue messages 270CONCAT(Ox, confQUEUE_LA) 271 272# load average at which we refuse connections 273CONCAT(OX, confREFUSE_LA) 274 275# work recipient factor 276ifdef(`confWORK_RECIPIENT_FACTOR', 277 CONCAT(Oy, confWORK_RECIPIENT_FACTOR), 278 #Oy30000) 279 280# deliver each queued job in a separate process? 281CONCAT(OY, confSEPARATE_PROC) 282 283# work class factor 284ifdef(`confWORK_CLASS_FACTOR', 285 CONCAT(Oz, confWORK_CLASS_FACTOR), 286 #Oz1800) 287 288# work time factor 289ifdef(`confWORK_TIME_FACTOR', 290 CONCAT(OZ, confWORK_TIME_FACTOR), 291 #OZ90000) 292 293########################### 294# Message precedences # 295########################### 296 297Pfirst-class=0 298Pspecial-delivery=100 299Plist=-30 300Pbulk=-60 301Pjunk=-100 302 303##################### 304# Trusted users # 305##################### 306 307Troot 308Tdaemon 309Tuucp 310 311######################### 312# Format of headers # 313######################### 314 315H?P?Return-Path: $g 316HReceived: $?sfrom $s $.$?_($_) $.by $j ($v/$Z)$?r with $r$. id $i; $b 317H?D?Resent-Date: $a 318H?D?Date: $a 319H?F?Resent-From: $q 320H?F?From: $q 321H?x?Full-Name: $x 322HSubject: 323# HPosted-Date: $a 324# H?l?Received-Date: $b 325H?M?Resent-Message-Id: <$t.$i@$j> 326H?M?Message-Id: <$t.$i@$j> 327# 328###################################################################### 329###################################################################### 330##### 331##### REWRITING RULES 332##### 333###################################################################### 334###################################################################### 335 336undivert(9)dnl 337 338########################################### 339### Rulset 3 -- Name Canonicalization ### 340########################################### 341S3 342 343# handle null input and list syntax (translate to <@> special case) 344R$@ $@ <@> 345R$*:;$* $@ $1 :; <@> 346 347# basic textual canonicalization -- note RFC733 heuristic here 348R$*<$*>$*<$*>$* <$2>$3$4$5 strip multiple <> <> 349R$*<$*<$+>$*>$* <$3>$5 2-level <> nesting 350R$*<>$* $@ <@> MAIL FROM:<> case 351R$*<$+>$* $2 basic RFC821/822 parsing 352 353# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later 354R@ $+ , $+ @ $1 : $2 change all "," to ":" 355 356# localize and dispose of route-based addresses 357R@ $+ : $+ $@ $>_SET_96_ < @$1 > : $2 handle <route-addr> 358 359# find focus for list syntax 360R $+ : $* ; @ $+ $@ $>_SET_96_ $1 : $2 ; < @ $3 > list syntax 361R $+ : $* ; $@ $1 : $2; list syntax 362 363# find focus for @ syntax addresses 364R$+ @ $+ $: $1 < @ $2 > focus on domain 365R$+ < $+ @ $+ > $1 $2 < @ $3 > move gaze right 366R$+ < @ $+ > $@ $>_SET_96_ $1 < @ $2 > already canonical 367 368ifdef(`_NO_UUCP_', `dnl', 369`# convert old-style addresses to a domain-based address 370R$- ! $+ $@ $>_SET_96_ $2 < @ $1 .UUCP > resolve uucp names 371R$+ . $- ! $+ $@ $>_SET_96_ $3 < @ $1 . $2 > domain uucps 372R$+ ! $+ $@ $>_SET_96_ $2 < @ $1 .UUCP > uucp subdomains') 373 374# if we have % signs, take the rightmost one 375R$* % $* $1 @ $2 First make them all @s. 376R$* @ $* @ $* $1 % $2 @ $3 Undo all but the last. 377R$* @ $* $@ $>_SET_96_ $1 < @ $2 > Insert < > and finish 378 379# else we must be a local name 380 381 382################################################ 383### Ruleset _SET_96_ -- bottom half of ruleset 3 ### 384################################################ 385 386# At this point, everything should be in a "local_part<@domain>extra" format. 387S`'_SET_96_ 388 389# handle special cases for local names 390R$* < @ localhost > $* $: $1 < @ $j . > $2 no domain at all 391R$* < @ localhost . $m > $* $: $1 < @ $j . > $2 local domain 392ifdef(`_NO_UUCP_', `dnl', 393`R$* < @ localhost . UUCP > $* $: $1 < @ $j . > $2 .UUCP domain') 394undivert(2)dnl 395 396ifdef(`_NO_UUCP_', `dnl', 397`ifdef(`UUCP_RELAY', 398`# pass UUCP addresses straight through 399R$* < @ $+ . UUCP > $* $@ $1 < @ $2 . UUCP > $3', 400`# if really UUCP, handle it immediately 401ifdef(`_CLASS_U_', 402`R$* < @ $=U . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 403ifdef(`_CLASS_V_', 404`R$* < @ $=V . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 405ifdef(`_CLASS_W_', 406`R$* < @ $=W . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 407ifdef(`_CLASS_X_', 408`R$* < @ $=X . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 409ifdef(`_CLASS_Y_', 410`R$* < @ $=Y . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 411 412# try UUCP traffic as a local address 413R$* < @ $+ . UUCP > $* $: $1 < @ $[ $2 $] . UUCP > $3 414ifdef(`_OLD_SENDMAIL_', 415`R$* < @ $+ . $+ . UUCP > $* $@ $1 < @ $2 . $3 . > $4', 416`R$* < @ $+ . . UUCP > $* $@ $1 < @ $2 . > $3')') 417') 418ifdef(`_NO_CANONIFY_', 419`# make sure local host names appear canonical 420R$* < @ $=w > $* $: $1 < @ $2 . > $3', 421`# pass to name server to make hostname canonical 422R$* < @ $* $~P > $* $: $1 < @ $[ $2 $3 $] > $4') 423 424undivert(8)dnl 425 426# if this is the local hostname, make sure we treat is as canonical 427R$* < @ $j > $* $: $1 < @ $j . > $2 428 429 430################################################## 431### Ruleset 4 -- Final Output Post-rewriting ### 432################################################## 433S4 434 435R$*<@> $@ $1 handle <> and list:; 436 437# resolve numeric addresses to name if possible 438R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 lookup numeric internet addr 439 440# strip trailing dot off possibly canonical name 441R$* < @ $+ . > $* $1 < @ $2 > $3 442 443# externalize local domain info 444R$* < $+ > $* $1 $2 $3 defocus 445R@ $+ : @ $+ : $+ @ $1 , @ $2 : $3 <route-addr> canonical 446R@ $* $@ @ $1 ... and exit 447 448ifdef(`_NO_UUCP_', `dnl', 449`# UUCP must always be presented in old form 450R$+ @ $- . UUCP $2!$1 u@h.UUCP => h!u') 451 452# delete duplicate local names 453R$+ % $=w @ $=w $1 @ $j u%host@host => u@host 454 455 456 457############################################################## 458### Ruleset _SET_97_ -- recanonicalize and call ruleset zero ### 459### (used for recursive calls) ### 460############################################################## 461 462S`'_SET_97_ 463R$* $: $>3 $1 464R$* $@ $>0 $1 465 466 467###################################### 468### Ruleset 0 -- Parse Address ### 469###################################### 470 471S0 472 473R<@> $#local $: <> special case error msgs 474R$*:;<@> $#error $@ USAGE $: "list:; syntax illegal for recipient addresses" 475 476ifdef(`_MAILER_smtp_', 477`# handle numeric address spec 478R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 numeric internet addr 479R$* < @ [ $+ ] > $* $#smtp $@ [$2] $: $1 @ [$2] $3 numeric internet spec', 480`dnl') 481 482# now delete the local info -- note $=O to find characters that cause forwarding 483R$* < @ > $* $@ $>_SET_97_ $1 user@ => user 484R< @ $=w . > : $* $@ $>_SET_97_ $2 @here:... -> ... 485R$* $=O $* < @ $=w . > $@ $>_SET_97_ $1 $2 $3 ...@here -> ... 486ifdef(`MAILER_TABLE', 487` 488# try mailer table lookup 489R$* <@ $+ > $* $: < $2 > $1 < @ $2 > $3 extract host name 490R< $+ . > $* $: < $1 > $2 strip trailing dot 491R< $+ > $* $: < $(mailertable $1 $) > $2 lookup 492R< $- : $+ > $* $# $1 $@ $2 $: $3 check -- resolved? 493R< $+ > $* $: $>90 <$1> $2 try domain', 494`dnl') 495 496# short circuit local delivery so forwarded email works 497ifdef(`_LOCAL_NOT_STICKY_', 498`R$=L < @ $=w . > $#local $: @ $1 special local names 499R$+ < @ $=w . > $#local $: $1 dispose directly', 500`R$+ < @ $=w . > $: $1 < @ $2 @ $H > first try hub 501ifdef(`_OLD_SENDMAIL_', 502`R$+ < $+ @ $-:$+ > $# $3 $@ $4 $: $1 < $2 > yep .... 503R$+ < $+ @ $+ > $#relay $@ $3 $: $1 < $2 > yep .... 504R$+ < $+ @ > $#local $: $1 nope, local address', 505`R$+ < $+ @ $+ > $#local $: $1 yep .... 506R$+ < $+ @ > $#local $: @ $1 nope, local address')') 507undivert(3)dnl 508undivert(4)dnl 509 510ifdef(`_NO_UUCP_', `dnl', 511`# resolve remotely connected UUCP links (if any) 512ifdef(`_CLASS_V_', 513`R$* < @ $=V . UUCP > $* $#smtp $@ $V $: <@ $V> : $1 @ $2.UUCP $3', 514 `dnl') 515ifdef(`_CLASS_W_', 516`R$* < @ $=W . UUCP > $* $#smtp $@ $W $: <@ $W> : $1 @ $2.UUCP $3', 517 `dnl') 518ifdef(`_CLASS_X_', 519`R$* < @ $=X . UUCP > $* $#smtp $@ $X $: <@ $X> : $1 @ $2.UUCP $3', 520 `dnl')') 521 522# resolve fake top level domains by forwarding to other hosts 523ifdef(`BITNET_RELAY', 524`R$*<@$+.BITNET>$* $#smtp $@ $B $: $1 <@$2.BITNET> $3 user@host.BITNET', 525 `dnl') 526ifdef(`CSNET_RELAY', 527`R$*<@$+.CSNET>$* $#smtp $@ $C $: $1 <@$2.CSNET> $3 user@host.CSNET', 528 `dnl') 529ifdef(`_MAILER_fax_', 530`R$+ < @ $+ .FAX > $#fax $@ $2 $: $1 user@host.FAX', 531`ifdef(`FAX_RELAY', 532`R$*<@$+.FAX>$* $#smtp $@ $F $: $1 <@$2.FAX> $3 user@host.FAX', 533 `dnl')') 534 535ifdef(`UUCP_RELAY', 536`# forward non-local UUCP traffic to our UUCP relay 537R$*<@$*.UUCP>$* $#smtp $@ $Y $: <@ $Y> : $1 @ $2.UUCP $3 uucp mail', 538`ifdef(`_MAILER_uucp_', 539`# forward other UUCP traffic straight to UUCP 540R< @ $+ .UUCP > : $+ $#uucp $@ $1 $: $2 @host.UUCP:... 541R$+ < @ $+ .UUCP > $#uucp $@ $2 $: $1 user@host.UUCP', 542 `dnl')') 543 544ifdef(`_LOCAL_RULES_', 545`# figure out what should stay in our local mail system 546undivert(1)', 547`ifdef(`_MAILER_smtp_', 548`# deal with other remote names 549R$* < @ $* > $* $#smtp $@ $2 $: $1 < @ $2 > $3 user@host.domain')') 550ifdef(`SMART_HOST', ` 551# pass names that still have a host to a smarthost 552R$* < @ $* > $* $: < $S > $1 < @ $2 > $3 glue on smarthost name 553R<$-:$+> $* < @$* > $* $# $1 $@ $2 $: $3 < @ $4 > $5 if non-null, use it 554R<$+> $* < @$* > $* $#suucp $@ $1 $: $2 < @ $3 > $4 if non-null, use it 555R<> $* < @ $* > $* $1 < @ $2 > $3 else strip off gunk', 556`ifdef(`_LOCAL_RULES_', ` 557# reject messages that have host names we do not understand 558R$* < @ $* > $* $#error $@ NOHOST $: Unrecognized host name $2', 559`dnl')') 560ifdef(`_MAILER_USENET_', ` 561# addresses sent to net.group.USENET will get forwarded to a newsgroup 562R$+ . USENET $# usenet $: $1') 563 564ifdef(`_OLD_SENDMAIL_', 565`# forward remaining names to local relay, if any 566R$=L $#local $: $1 special local names 567R$+ $: $1 < @ $R > append relay 568R$+ < @ > $: $1 < @ $H > no relay, try hub 569R$+ < @ > $#local $: $1 no relay or hub: local 570R$+ < @ $=w > $#local $: $1 we are relay/hub: local 571R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 deliver to relay/hub 572R$+ < @ $+ > $#relay $@ $2 $: $1 deliver to relay/hub', 573 574`# if this is quoted, strip the quotes and try again 575R$+ $: $(dequote $1 $) strip quotes 576R$* $=O $* $@ $>_SET_97_ $1 $2 $3 try again 577 578# handle locally delivered names 579R$=L $#local $: @ $1 special local names 580R$+ $#local $: $1 regular local names 581 582########################################################################### 583### Ruleset 5 -- special rewriting after aliases have been expanded ### 584### (new sendmail only) ### 585########################################################################### 586 587S5 588 589# see if we have a relay or a hub 590R$+ $: $1 < @ $R > 591R$+ < @ > $: $1 < @ $H > no relay, try hub 592R$+ < @ $=w > $@ $1 we are relay/hub: local 593R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 send to relay or hub 594ifdef(`_MAILER_smtp_', 595`R$+ < @ $+ > $#relay $@ $2 $: $1 send to relay or hub')') 596ifdef(`MAILER_TABLE', 597` 598 599########################################################################### 600### Ruleset 90 -- try domain part of mailertable entry ### 601### (new sendmail only) ### 602########################################################################### 603 604S90 605R<$- . $+ > $* $: < $(mailertable .$2 $) > $3 lookup 606R<$- : $+ > $* $# $1 $@ $2 $: $3 check -- resolved? 607R< . $+ > $* $@ $>90 <$1> $2 no -- strip & try again 608R<$*> $* $@ $2 no match', 609`dnl') 610# 611###################################################################### 612###################################################################### 613##### 614`##### MAILER DEFINITIONS' 615##### 616###################################################################### 617###################################################################### 618undivert(7)dnl 619