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 6.37 (Berkeley) 05/01/93') 12 13MAILER(local)dnl 14 15ifdef(`_OLD_SENDMAIL_', `dnl', 16`# level 4 config file format 17V4') 18 19################## 20# local info # 21################## 22 23Cwlocalhost 24ifdef(`USE_CW_FILE', 25`# file containing names of hosts for which we receive email 26CONCAT(`Fw', confCW_FILE)', `dnl') 27 28ifdef(`UUCP_RELAY', 29`# UUCP relay host 30CONCAT(DY, UUCP_RELAY) 31 32')dnl 33ifdef(`BITNET_RELAY', 34`# BITNET relay host 35CONCAT(DB, BITNET_RELAY) 36 37')dnl 38ifdef(`CSNET_RELAY', 39`# CSNET relay host 40CONCAT(DC, CSNET_RELAY) 41 42')dnl 43ifdef(`FAX_RELAY', 44`# FAX relay host 45CONCAT(DF, FAX_RELAY) 46 47')dnl 48ifdef(`SMART_HOST', 49`# "Smart" UUCP relay host 50CONCAT(DS, SMART_HOST) 51 52')dnl 53ifdef(`MAILER_TABLE', 54`# Mailer table (overriding domains) 55Kmailertable MAILER_TABLE 56 57')dnl 58# who I send unqualified names to (null means deliver locally) 59CONCAT(DR, ifdef(`LOCAL_RELAY', LOCAL_RELAY)) 60 61# who gets all local email traffic ($R has precedence for unqualified names) 62CONCAT(DH, ifdef(`MAIL_HUB', MAIL_HUB)) 63 64# my official hostname ($w or $w.$D) 65CONCAT(Dj$w, ifdef(`NEED_DOMAIN', .$D)) 66 67# who I masquerade as (can be $j) 68CONCAT(DM, ifdef(`MASQUERADE_NAME', MASQUERADE_NAME, $j)) 69 70# class L: names that should be delivered locally, even if we have a relay 71# class E: names that should be exposed as from this host, even if we masquerade 72CLroot 73CEroot 74undivert(5)dnl 75 76# operators that cannot be in local usernames (i.e., network indicators) 77CO @ % ifdef(`_NO_UUCP_', `', `!') 78 79# a class with just dot (for identifying canonical names) 80C.. 81 82ifdef(`_OLD_SENDMAIL_', `dnl', 83`# dequoting map 84Kdequote dequote') 85 86undivert(6)dnl 87 88###################### 89# Special macros # 90###################### 91 92# SMTP initial login message 93CONCAT(De, confSMTP_LOGIN_MSG) 94 95# UNIX initial From header format 96CONCAT(Dl, confFROM_LINE) 97 98# my name for error messages 99CONCAT(Dn, confMAILER_NAME) 100 101# delimiter (operator) characters 102CONCAT(Do, confOPERATORS) 103 104# format of a total name 105CONCAT(Dq, ifdef(`confFROM_HEADER', confFROM_HEADER, 106 ifdef(`_OLD_SENDMAIL_', `$g$?x ($x)$.', `$?x$x <$g>$|$g$.'))) 107include(`../m4/version.m4') 108 109############### 110# Options # 111############### 112 113# preserve 8 bits on message body on input? 114CONCAT(O8, confEIGHT_BIT_INPUT) 115 116# wait (in minutes) for alias file rebuild 117CONCAT(Oa, confALIAS_WAIT) 118 119# location of alias file 120CONCAT(OA, ifdef(`ALIAS_FILE', ALIAS_FILE, /etc/aliases)) 121 122# minimum number of free blocks on filesystem 123CONCAT(Ob, confMIN_FREE_BLOCKS) 124 125# substitution for space (blank) characters 126CONCAT(OB, confBLANK_SUB) 127 128# connect to "expensive" mailers on initial submission? 129CONCAT(Oc, confCON_EXPENSIVE) 130 131# checkpoint queue runs after every N successful deliveries 132CONCAT(OC, confCHECKPOINT_INTERVAL) 133 134# default delivery mode 135CONCAT(Od, confDELIVERY_MODE) 136 137# automatically rebuild the alias database? 138CONCAT(OD, confAUTO_REBUILD) 139 140# error message header/file */ 141ifdef(`confERROR_MESSAGE', 142 concat(OE, confERROR_MESSAGE), 143 #OE/etc/sendmail.oE) 144 145# error mode 146ifdef(`confERROR_MODE', 147 concat(Oe, confERROR_MODE), 148 #Oep) 149 150# save Unix-style "From_" lines at top of header? 151CONCAT(Of, confSAVE_FROM_LINES) 152 153# temporary file mode 154CONCAT(OF, confTEMP_FILE_MODE) 155 156# match recipients against GECOS field? 157CONCAT(OG, confMATCH_GECOS) 158 159# default GID 160CONCAT(Og, confDEF_GROUP_ID) 161 162# maximum hop count 163CONCAT(Oh, confMAX_HOP) 164 165# location of help file 166CONCAT(OH, ifdef(`HELP_FILE', HELP_FILE, /usr/lib/sendmail.hf)) 167 168# ignore dots as terminators in incoming messages? 169CONCAT(Oi, confIGNORE_DOTS) 170 171# Insist that the BIND name server be running to resolve names 172ifdef(`confBIND_OPTS', 173 CONCAT(OI, confBIND_OPTS), 174 #OI) 175 176# Forward file search path 177ifdef(`confFORWARD_PATH', 178 CONCAT(OJ, confFORWARD_PATH), 179 #OJ/var/forward/$u:$z/.forward.$w:$z/.forward) 180 181# open connection cache size 182CONCAT(Ok, confMCI_CACHE_SIZE) 183 184# open connection cache timeout 185CONCAT(OK, confMCI_CACHE_TIMEOUT) 186 187# log level 188CONCAT(OL, confLOG_LEVEL) 189 190# send to me too, even in an alias expansion? 191CONCAT(Om, confME_TOO) 192 193# verify RHS in newaliases? 194CONCAT(On, confCHECK_ALIASES) 195 196# default messages to old style headers if no special punctuation? 197CONCAT(Oo, confOLD_STYLE_HEADERS) 198 199# SMTP daemon options 200ifdef(`confDAEMON_OPTIONS', 201 CONCAT(OO, confDAEMON_OPTIONS), 202 #OOPort=esmtp) 203 204# privacy flags 205CONCAT(Op, confPRIVACY_FLAGS) 206 207# who (if anyone) should get extra copies of error messages 208ifdef(`confCOPY_ERRORS_TO', 209 CONCAT(OP, confCOPY_ERRORS_TO), 210 #OPPostmaster) 211 212# slope of queue-only function 213ifdef(`confQUEUE_FACTOR', 214 CONCAT(Oq, confQUEUE_FACTOR), 215 #Oq600000) 216 217# queue directory 218CONCAT(OQ, ifdef(`QUEUE_DIR', QUEUE_DIR, /var/spool/mqueue)) 219 220# read timeout -- now OK per RFC 1123 section 5.3.2 221ifdef(`confREAD_TIMEOUT', 222 CONCAT(Or, confREAD_TIMEOUT), 223 #Ordatablock=10m) 224 225# queue up everything before forking? 226CONCAT(Os, confSAFE_QUEUE) 227 228# status file 229CONCAT(OS, ifdef(`STATUS_FILE', STATUS_FILE, /etc/sendmail.st)) 230 231# default message timeout interval 232CONCAT(OT, confMESSAGE_TIMEOUT) 233 234# time zone handling: 235# if undefined, use system default 236# if defined but null, use TZ envariable passed in 237# if defined and non-null, use that info 238ifelse(confTIME_ZONE, `USE_SYSTEM', `#Ot', 239 confTIME_ZONE, `USE_TZ', `', 240 `CONCAT(Ot, confTIME_ZONE)') 241 242# default UID 243CONCAT(Ou, confDEF_USER_ID) 244 245# list of locations of user database file (null means no lookup) 246OU`'ifdef(`confUSERDB_SPEC', `confUSERDB_SPEC') 247 248# fallback MX host 249ifdef(`confFALLBACK_MX', 250 CONCAT(OV, confFALLBACK_MX), 251 #OVfall.back.host.net) 252 253# load average at which we just queue messages 254CONCAT(Ox, confQUEUE_LA) 255 256# load average at which we refuse connections 257CONCAT(OX, confREFUSE_LA) 258 259# work recipient factor 260ifdef(`confWORK_RECIPIENT_FACTOR', 261 CONCAT(Oy, confWORK_RECIPIENT_FACTOR), 262 #Oy30000) 263 264# deliver each queued job in a separate process? 265CONCAT(OY, confSEPARATE_PROC) 266 267# work class factor 268ifdef(`confWORK_CLASS_FACTOR', 269 CONCAT(Oz, confWORK_CLASS_FACTOR), 270 #Oz1800) 271 272# work time factor 273ifdef(`confWORK_TIME_FACTOR', 274 CONCAT(OZ, confWORK_TIME_FACTOR), 275 #OZ90000) 276 277########################### 278# Message precedences # 279########################### 280 281Pfirst-class=0 282Pspecial-delivery=100 283Plist=-30 284Pbulk=-60 285Pjunk=-100 286 287##################### 288# Trusted users # 289##################### 290 291Troot 292Tdaemon 293Tuucp 294 295######################### 296# Format of headers # 297######################### 298 299H?P?Return-Path: $g 300HReceived: $?sfrom $s $.$?_($_) $.by $j ($v/$Z) id $i; $b 301H?D?Resent-Date: $a 302H?D?Date: $a 303H?F?Resent-From: $q 304H?F?From: $q 305H?x?Full-Name: $x 306HSubject: 307# HPosted-Date: $a 308# H?l?Received-Date: $b 309H?M?Resent-Message-Id: <$t.$i@$j> 310H?M?Message-Id: <$t.$i@$j> 311# 312###################################################################### 313###################################################################### 314##### 315##### REWRITING RULES 316##### 317###################################################################### 318###################################################################### 319 320undivert(9)dnl 321 322########################################### 323### Rulset 3 -- Name Canonicalization ### 324########################################### 325S3 326 327# handle null input and list syntax (translate to <@> special case) 328R$@ $@ <@> 329R$*:;$* $@ $1 :; <@> 330 331# basic textual canonicalization -- note RFC733 heuristic here 332R$*<$*>$*<$*>$* <$2>$3$4$5 strip multiple <> <> 333R$*<$*<$+>$*>$* <$3>$5 2-level <> nesting 334R$*<>$* $@ <@> MAIL FROM:<> case 335R$*<$+>$* $2 basic RFC821/822 parsing 336 337# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later 338R@ $+ , $+ @ $1 : $2 change all "," to ":" 339 340# localize and dispose of route-based addresses 341R@ $+ : $+ $@ $>6 < @$1 > : $2 handle <route-addr> 342 343# find focus for list syntax 344R $+ : $* ; @ $+ $@ $>6 $1 : $2 ; < @ $3 > list syntax 345R $+ : $* ; $@ $1 : $2; list syntax 346 347# find focus for @ syntax addresses 348R$+ @ $+ $: $1 < @ $2 > focus on domain 349R$+ < $+ @ $+ > $1 $2 < @ $3 > move gaze right 350R$+ < @ $+ > $@ $>6 $1 < @ $2 > already canonical 351 352ifdef(`_NO_UUCP_', `dnl', 353`# convert old-style addresses to a domain-based address 354R$- ! $+ $@ $>6 $2 < @ $1 .UUCP > resolve uucp names 355R$+ . $- ! $+ $@ $>6 $3 < @ $1 . $2 > domain uucps 356R$+ ! $+ $@ $>6 $2 < @ $1 .UUCP > uucp subdomains') 357 358# if we have % signs, take the rightmost one 359R$* % $* $1 @ $2 First make them all @s. 360R$* @ $* @ $* $1 % $2 @ $3 Undo all but the last. 361R$* @ $* $@ $>6 $1 < @ $2 > Insert < > and finish 362 363# else we must be a local name 364 365 366############################################### 367### Ruleset 6 -- bottom half of ruleset 3 ### 368############################################### 369 370# At this point, everything should be in a "local_part<@domain>extra" format. 371S6 372 373# handle special cases for local names 374R$* < @ $=w > $* $: $1 < @ $j . > $3 no domain at all 375R$* < @ $=w . UUCP > $* $: $1 < @ $j . > $3 .UUCP domain 376undivert(2)dnl 377 378ifdef(`_NO_UUCP_', `dnl', 379`ifdef(`UUCP_RELAY', 380`# pass UUCP addresses straight through 381R$* < @ $+ . UUCP > $* $@ $1 < @ $2 . UUCP > $3', 382`# if really UUCP, handle it immediately 383ifdef(`_CLASS_U_', 384`R$* < @ $=U . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 385ifdef(`_CLASS_V_', 386`R$* < @ $=V . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 387ifdef(`_CLASS_W_', 388`R$* < @ $=W . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 389ifdef(`_CLASS_X_', 390`R$* < @ $=X . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 391ifdef(`_CLASS_Y_', 392`R$* < @ $=Y . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 393 394# try UUCP traffic as a local address 395R$* < @ $+ . UUCP > $* $: $1 < @ $[ $2 $] . UUCP > $3 396ifdef(`_OLD_SENDMAIL_', 397`R$* < @ $+ . $+ . UUCP > $* $@ $1 < @ $2 . $3 . > $4', 398`R$* < @ $+ . . UUCP > $* $@ $1 < @ $2 . > $3')') 399') 400ifdef(`_NO_CANONIFY_', `dnl', 401`# pass to name server to make hostname canonical 402R$* < @ $* $~. > $* $: $1 < @ $[ $2 $3 $] > $4 403') 404# handle possible alternate names 405R$* < @ $=w . $m . > $* $: $1 < @ $j . > $3 406R$* < @ $=w . $m > $* $: $1 < @ $j . > $3 407undivert(8)dnl 408 409# if this is the local hostname, make sure we treat is as canonical 410R$* < @ $j > $* $: $1 < @ $j . > $2 411 412 413################################################## 414### Ruleset 4 -- Final Output Post-rewriting ### 415################################################## 416S4 417 418R$*<@> $@ $1 handle <> and list:; 419 420# resolve numeric addresses to name if possible 421R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 lookup numeric internet addr 422 423# strip trailing dot off possibly canonical name 424R$* < @ $+ . > $* $1 < @ $2 > $3 425 426# externalize local domain info 427R$* < $+ > $* $1 $2 $3 defocus 428R@ $+ : @ $+ : $+ @ $1 , @ $2 : $3 <route-addr> canonical 429R@ $* $@ @ $1 ... and exit 430 431ifdef(`_NO_UUCP_', `dnl', 432`# UUCP must always be presented in old form 433R$+ @ $- . UUCP $2!$1 u@h.UUCP => h!u') 434 435# delete duplicate local names 436R$+ % $=w @ $=w $1 @ $j u%host@host => u@host 437 438 439 440############################################################# 441### Ruleset 7 -- recanonicalize and call ruleset zero ### 442### (used for recursive calls) ### 443############################################################# 444 445S7 446R$* $: $>3 $1 447R$* $@ $>0 $1 448 449 450###################################### 451### Ruleset 0 -- Parse Address ### 452###################################### 453 454S0 455 456R<@> $#local $: <> special case error msgs 457 458ifdef(`_MAILER_smtp_', 459`# handle numeric address spec 460R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 numeric internet addr 461R$* < @ [ $+ ] > $* $#smtp $@ [$2] $: $1 @ [$2] $3 numeric internet spec', 462`dnl') 463 464# now delete the local info -- note $=O to find characters that cause forwarding 465R$* < @ > $* $@ $>7 $1 user@ => user 466R< @ $j . > : $* $@ $>7 $1 @here:... -> ... 467R$* $=O $* < @ $j . > $@ $>7 $1 $2 $3 ...@here -> ... 468ifdef(`MAILER_TABLE', 469` 470# try mailer table lookup 471R$* < @ $+ > $* $: $1 < @ $(mailertable $2 $) > $3 472R$* < @ $-:$+ > $* $# $2 $@ $3 $: $1 < @ $3 > $4 found a match', 473`dnl') 474 475# short circuit local delivery so forwarded email works 476ifdef(`_LOCAL_NOT_STICKY_', 477`R$=L < @ $j . > $#local $: @ $1 special local names 478R$+ < @ $j . > $#local $: $1 dispose directly', 479`R$+ < @ $j . > $: $1 < @ $j @ $H > first try hub 480ifdef(`_OLD_SENDMAIL_', 481`R$+ < $+ @ $-:$+ > $# $3 $@ $4 $: $1 < $2 > yep .... 482R$+ < $+ @ $+ > $#relay $@ $3 $: $1 < $2 > yep .... 483R$+ < $+ @ > $#local $: $1 nope, local address', 484`R$+ < $+ @ $+ > $#local $: $1 yep .... 485R$+ < $+ @ > $#local $: @ $1 nope, local address')') 486undivert(3)dnl 487undivert(4)dnl 488 489# resolve remotely connected UUCP links (if any) 490ifdef(`_CLASS_V_', 491`R$* < @ $=V . UUCP > $* $#smtp $@ $V $: <@ $V> : $1 @ $2.UUCP $3', 492 `dnl') 493ifdef(`_CLASS_W_', 494`R$* < @ $=W . UUCP > $* $#smtp $@ $W $: <@ $W> : $1 @ $2.UUCP $3', 495 `dnl') 496ifdef(`_CLASS_X_', 497`R$* < @ $=X . UUCP > $* $#smtp $@ $X $: <@ $X> : $1 @ $2.UUCP $3', 498 `dnl') 499 500# resolve fake top level domains by forwarding to other hosts 501ifdef(`BITNET_RELAY', 502`R$*<@$+.BITNET>$* $#smtp $@ $B $: $1 <@$2.BITNET> $3 user@host.BITNET', 503 `dnl') 504ifdef(`CSNET_RELAY', 505`R$*<@$+.CSNET>$* $#smtp $@ $C $: $1 <@$2.CSNET> $3 user@host.CSNET', 506 `dnl') 507ifdef(`_MAILER_fax_', 508`R$+ < @ $+ .FAX > $#fax $@ $2 $: $1 user@host.FAX', 509`ifdef(`FAX_RELAY', 510`R$*<@$+.FAX>$* $#smtp $@ $F $: $1 <@$2.FAX> $3 user@host.FAX', 511 `dnl')') 512 513ifdef(`UUCP_RELAY', 514`# forward non-local UUCP traffic to our UUCP relay 515R$*<@$*.UUCP>$* $#smtp $@ $Y $: <@ $Y> : $1 @ $2.UUCP $3 uucp mail', 516`ifdef(`_MAILER_uucp_', 517`# forward other UUCP traffic straight to UUCP 518R< @ $+ .UUCP > : $+ $#uucp $@ $1 $: $2 @host.UUCP:... 519R$+ < @ $+ .UUCP > $#uucp $@ $2 $: $1 user@host.UUCP', 520 `dnl')') 521 522ifdef(`_LOCAL_RULES_', 523`# figure out what should stay in our local mail system 524undivert(1)', 525`ifdef(`_MAILER_smtp_', 526`# deal with other remote names 527R$* < @ $* > $* $#smtp $@ $2 $: $1 < @ $2 > $3 user@host.domain')') 528ifdef(`SMART_HOST', ` 529# pass names that still have a host to a smarthost 530R$* < @ $* > $* $: < $S > $1 < @ $2 > $3 glue on smarthost name 531R<$-:$+> $* < @$* > $* $# $1 $@ $2 $: $3 < @ $4 > $5 if non-null, use it 532R<$+> $* < @$* > $* $#suucp $@ $1 $: $2 < @ $3 > $4 if non-null, use it 533R<> $* < @ $* > $* $1 < @ $2 > $3 else strip off gunk', 534`ifdef(`_LOCAL_RULES_', ` 535# reject messages that have host names we do not understand 536R$* < @ $* > $* $#error $@ NOHOST $: Unrecognized host name $2', 537`dnl')') 538ifdef(`_MAILER_USENET_', ` 539# addresses sent to net.group.USENET will get forwarded to a newsgroup 540R$+ . USENET $# usenet $: $1') 541 542ifdef(`_OLD_SENDMAIL_', 543`# forward remaining names to local relay, if any 544R$=L $#local $: $1 special local names 545R$+ $: $1 < @ $R > append relay 546R$+ < @ > $: $1 < @ $H > no relay, try hub 547R$+ < @ > $#local $: $1 no relay or hub: local 548R$+ < @ $j > $#local $: $1 we are relay/hub: local 549R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 deliver to relay/hub 550R$+ < @ $+ > $#relay $@ $2 $: $1 deliver to relay/hub', 551 552`# if this is quoted, strip the quotes and try again 553R$+ $: $(dequote $1 $) strip quotes 554R$* $=O $* $@ $>7 $1 $2 $3 try again 555 556# handle locally delivered names 557R$=L $#local $: @ $1 special local names 558R$+ $#local $: $1 regular local names 559 560########################################################################### 561### Ruleset 5 -- special rewriting after aliases have been expanded ### 562### (new sendmail only) ### 563########################################################################### 564 565S5 566 567# see if we have a relay or a hub 568R$+ $: $1 < @ $R > 569R$+ < @ > $: $1 < @ $H > no relay, try hub 570R$+ < @ $j > $@ $1 we are relay/hub: local 571R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 send to relay or hub 572ifdef(`_MAILER_smtp_', 573`R$+ < @ $+ > $#relay $@ $2 $: $1 send to relay or hub')') 574# 575###################################################################### 576###################################################################### 577##### 578`##### MAILER DEFINITIONS' 579##### 580###################################################################### 581###################################################################### 582undivert(7)dnl 583