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 6.38 (Berkeley) 05/11/93') 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$.'))) 107include(`../m4/version.m4') 108 109############### 110# Options # 111############### 112 113# strip message body to 7 bits on input? 114CONCAT(O7, confSEVEN_BIT_INPUT) 115 116# wait (in minutes) for alias file rebuild 117CONCAT(Oa, confALIAS_WAIT) 118 119# location of alias file 120CONCAT(OA, ifdef(`ALIAS_FILE', ALIAS_FILE, /etc/aliases)) 121 122# minimum number of free blocks on filesystem 123CONCAT(Ob, confMIN_FREE_BLOCKS) 124 125# substitution for space (blank) characters 126CONCAT(OB, confBLANK_SUB) 127 128# connect to "expensive" mailers on initial submission? 129CONCAT(Oc, confCON_EXPENSIVE) 130 131# checkpoint queue runs after every N successful deliveries 132CONCAT(OC, confCHECKPOINT_INTERVAL) 133 134# default delivery mode 135CONCAT(Od, confDELIVERY_MODE) 136 137# automatically rebuild the alias database? 138CONCAT(OD, confAUTO_REBUILD) 139 140# error message header/file */ 141ifdef(`confERROR_MESSAGE', 142 concat(OE, confERROR_MESSAGE), 143 #OE/etc/sendmail.oE) 144 145# error mode 146ifdef(`confERROR_MODE', 147 concat(Oe, confERROR_MODE), 148 #Oep) 149 150# save Unix-style "From_" lines at top of header? 151CONCAT(Of, confSAVE_FROM_LINES) 152 153# temporary file mode 154CONCAT(OF, confTEMP_FILE_MODE) 155 156# match recipients against GECOS field? 157CONCAT(OG, confMATCH_GECOS) 158 159# default GID 160CONCAT(Og, confDEF_GROUP_ID) 161 162# maximum hop count 163CONCAT(Oh, confMAX_HOP) 164 165# location of help file 166CONCAT(OH, ifdef(`HELP_FILE', HELP_FILE, /usr/lib/sendmail.hf)) 167 168# ignore dots as terminators in incoming messages? 169CONCAT(Oi, confIGNORE_DOTS) 170 171# Insist that the BIND name server be running to resolve names 172ifdef(`confBIND_OPTS', 173 CONCAT(OI, confBIND_OPTS), 174 #OI) 175 176# deliver MIME-encapsulated error messages? 177CONCAT(Oj, confMIME_FORMAT_ERRORS) 178 179# Forward file search path 180ifdef(`confFORWARD_PATH', 181 CONCAT(OJ, confFORWARD_PATH), 182 #OJ/var/forward/$u:$z/.forward.$w:$z/.forward) 183 184# open connection cache size 185CONCAT(Ok, confMCI_CACHE_SIZE) 186 187# open connection cache timeout 188CONCAT(OK, confMCI_CACHE_TIMEOUT) 189 190# log level 191CONCAT(OL, confLOG_LEVEL) 192 193# send to me too, even in an alias expansion? 194CONCAT(Om, confME_TOO) 195 196# verify RHS in newaliases? 197CONCAT(On, confCHECK_ALIASES) 198 199# default messages to old style headers if no special punctuation? 200CONCAT(Oo, confOLD_STYLE_HEADERS) 201 202# SMTP daemon options 203ifdef(`confDAEMON_OPTIONS', 204 CONCAT(OO, confDAEMON_OPTIONS), 205 #OOPort=esmtp) 206 207# privacy flags 208CONCAT(Op, confPRIVACY_FLAGS) 209 210# who (if anyone) should get extra copies of error messages 211ifdef(`confCOPY_ERRORS_TO', 212 CONCAT(OP, confCOPY_ERRORS_TO), 213 #OPPostmaster) 214 215# slope of queue-only function 216ifdef(`confQUEUE_FACTOR', 217 CONCAT(Oq, confQUEUE_FACTOR), 218 #Oq600000) 219 220# queue directory 221CONCAT(OQ, ifdef(`QUEUE_DIR', QUEUE_DIR, /var/spool/mqueue)) 222 223# read timeout -- now OK per RFC 1123 section 5.3.2 224ifdef(`confREAD_TIMEOUT', 225 CONCAT(Or, confREAD_TIMEOUT), 226 #Ordatablock=10m) 227 228# queue up everything before forking? 229CONCAT(Os, confSAFE_QUEUE) 230 231# status file 232CONCAT(OS, ifdef(`STATUS_FILE', STATUS_FILE, /etc/sendmail.st)) 233 234# default message timeout interval 235CONCAT(OT, confMESSAGE_TIMEOUT) 236 237# time zone handling: 238# if undefined, use system default 239# if defined but null, use TZ envariable passed in 240# if defined and non-null, use that info 241ifelse(confTIME_ZONE, `USE_SYSTEM', `#Ot', 242 confTIME_ZONE, `USE_TZ', `', 243 `CONCAT(Ot, confTIME_ZONE)') 244 245# default UID 246CONCAT(Ou, confDEF_USER_ID) 247 248# list of locations of user database file (null means no lookup) 249OU`'ifdef(`confUSERDB_SPEC', `confUSERDB_SPEC') 250 251# fallback MX host 252ifdef(`confFALLBACK_MX', 253 CONCAT(OV, confFALLBACK_MX), 254 #OVfall.back.host.net) 255 256# load average at which we just queue messages 257CONCAT(Ox, confQUEUE_LA) 258 259# load average at which we refuse connections 260CONCAT(OX, confREFUSE_LA) 261 262# work recipient factor 263ifdef(`confWORK_RECIPIENT_FACTOR', 264 CONCAT(Oy, confWORK_RECIPIENT_FACTOR), 265 #Oy30000) 266 267# deliver each queued job in a separate process? 268CONCAT(OY, confSEPARATE_PROC) 269 270# work class factor 271ifdef(`confWORK_CLASS_FACTOR', 272 CONCAT(Oz, confWORK_CLASS_FACTOR), 273 #Oz1800) 274 275# work time factor 276ifdef(`confWORK_TIME_FACTOR', 277 CONCAT(OZ, confWORK_TIME_FACTOR), 278 #OZ90000) 279 280########################### 281# Message precedences # 282########################### 283 284Pfirst-class=0 285Pspecial-delivery=100 286Plist=-30 287Pbulk=-60 288Pjunk=-100 289 290##################### 291# Trusted users # 292##################### 293 294Troot 295Tdaemon 296Tuucp 297 298######################### 299# Format of headers # 300######################### 301 302H?P?Return-Path: $g 303HReceived: $?sfrom $s $.$?_($_) $.by $j ($v/$Z) id $i; $b 304H?D?Resent-Date: $a 305H?D?Date: $a 306H?F?Resent-From: $q 307H?F?From: $q 308H?x?Full-Name: $x 309HSubject: 310# HPosted-Date: $a 311# H?l?Received-Date: $b 312H?M?Resent-Message-Id: <$t.$i@$j> 313H?M?Message-Id: <$t.$i@$j> 314# 315###################################################################### 316###################################################################### 317##### 318##### REWRITING RULES 319##### 320###################################################################### 321###################################################################### 322 323undivert(9)dnl 324 325########################################### 326### Rulset 3 -- Name Canonicalization ### 327########################################### 328S3 329 330# handle null input and list syntax (translate to <@> special case) 331R$@ $@ <@> 332R$*:;$* $@ $1 :; <@> 333 334# basic textual canonicalization -- note RFC733 heuristic here 335R$*<$*>$*<$*>$* <$2>$3$4$5 strip multiple <> <> 336R$*<$*<$+>$*>$* <$3>$5 2-level <> nesting 337R$*<>$* $@ <@> MAIL FROM:<> case 338R$*<$+>$* $2 basic RFC821/822 parsing 339 340# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later 341R@ $+ , $+ @ $1 : $2 change all "," to ":" 342 343# localize and dispose of route-based addresses 344R@ $+ : $+ $@ $>6 < @$1 > : $2 handle <route-addr> 345 346# find focus for list syntax 347R $+ : $* ; @ $+ $@ $>6 $1 : $2 ; < @ $3 > list syntax 348R $+ : $* ; $@ $1 : $2; list syntax 349 350# find focus for @ syntax addresses 351R$+ @ $+ $: $1 < @ $2 > focus on domain 352R$+ < $+ @ $+ > $1 $2 < @ $3 > move gaze right 353R$+ < @ $+ > $@ $>6 $1 < @ $2 > already canonical 354 355ifdef(`_NO_UUCP_', `dnl', 356`# convert old-style addresses to a domain-based address 357R$- ! $+ $@ $>6 $2 < @ $1 .UUCP > resolve uucp names 358R$+ . $- ! $+ $@ $>6 $3 < @ $1 . $2 > domain uucps 359R$+ ! $+ $@ $>6 $2 < @ $1 .UUCP > uucp subdomains') 360 361# if we have % signs, take the rightmost one 362R$* % $* $1 @ $2 First make them all @s. 363R$* @ $* @ $* $1 % $2 @ $3 Undo all but the last. 364R$* @ $* $@ $>6 $1 < @ $2 > Insert < > and finish 365 366# else we must be a local name 367 368 369############################################### 370### Ruleset 6 -- bottom half of ruleset 3 ### 371############################################### 372 373# At this point, everything should be in a "local_part<@domain>extra" format. 374S6 375 376# handle special cases for local names 377R$* < @ $=w > $* $: $1 < @ $j . > $3 no domain at all 378R$* < @ $=w . UUCP > $* $: $1 < @ $j . > $3 .UUCP domain 379undivert(2)dnl 380 381ifdef(`_NO_UUCP_', `dnl', 382`ifdef(`UUCP_RELAY', 383`# pass UUCP addresses straight through 384R$* < @ $+ . UUCP > $* $@ $1 < @ $2 . UUCP > $3', 385`# if really UUCP, handle it immediately 386ifdef(`_CLASS_U_', 387`R$* < @ $=U . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 388ifdef(`_CLASS_V_', 389`R$* < @ $=V . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 390ifdef(`_CLASS_W_', 391`R$* < @ $=W . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 392ifdef(`_CLASS_X_', 393`R$* < @ $=X . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 394ifdef(`_CLASS_Y_', 395`R$* < @ $=Y . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 396 397# try UUCP traffic as a local address 398R$* < @ $+ . UUCP > $* $: $1 < @ $[ $2 $] . UUCP > $3 399ifdef(`_OLD_SENDMAIL_', 400`R$* < @ $+ . $+ . UUCP > $* $@ $1 < @ $2 . $3 . > $4', 401`R$* < @ $+ . . UUCP > $* $@ $1 < @ $2 . > $3')') 402') 403ifdef(`_NO_CANONIFY_', `dnl', 404`# pass to name server to make hostname canonical 405R$* < @ $* $~. > $* $: $1 < @ $[ $2 $3 $] > $4 406') 407# handle possible alternate names 408R$* < @ $=w . $m . > $* $: $1 < @ $j . > $3 409R$* < @ $=w . $m > $* $: $1 < @ $j . > $3 410undivert(8)dnl 411 412# if this is the local hostname, make sure we treat is as canonical 413R$* < @ $j > $* $: $1 < @ $j . > $2 414 415 416################################################## 417### Ruleset 4 -- Final Output Post-rewriting ### 418################################################## 419S4 420 421R$*<@> $@ $1 handle <> and list:; 422 423# resolve numeric addresses to name if possible 424R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 lookup numeric internet addr 425 426# strip trailing dot off possibly canonical name 427R$* < @ $+ . > $* $1 < @ $2 > $3 428 429# externalize local domain info 430R$* < $+ > $* $1 $2 $3 defocus 431R@ $+ : @ $+ : $+ @ $1 , @ $2 : $3 <route-addr> canonical 432R@ $* $@ @ $1 ... and exit 433 434ifdef(`_NO_UUCP_', `dnl', 435`# UUCP must always be presented in old form 436R$+ @ $- . UUCP $2!$1 u@h.UUCP => h!u') 437 438# delete duplicate local names 439R$+ % $=w @ $=w $1 @ $j u%host@host => u@host 440 441 442 443############################################################# 444### Ruleset 7 -- recanonicalize and call ruleset zero ### 445### (used for recursive calls) ### 446############################################################# 447 448S7 449R$* $: $>3 $1 450R$* $@ $>0 $1 451 452 453###################################### 454### Ruleset 0 -- Parse Address ### 455###################################### 456 457S0 458 459R<@> $#local $: <> special case error msgs 460R$*:;<@> $#error $@ USAGE $: "list:; syntax illegal for recipient addresses" 461 462ifdef(`_MAILER_smtp_', 463`# handle numeric address spec 464R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 numeric internet addr 465R$* < @ [ $+ ] > $* $#smtp $@ [$2] $: $1 @ [$2] $3 numeric internet spec', 466`dnl') 467 468# now delete the local info -- note $=O to find characters that cause forwarding 469R$* < @ > $* $@ $>7 $1 user@ => user 470R< @ $j . > : $* $@ $>7 $1 @here:... -> ... 471R$* $=O $* < @ $j . > $@ $>7 $1 $2 $3 ...@here -> ... 472ifdef(`MAILER_TABLE', 473` 474# try mailer table lookup 475R$* < @ $+ > $* $: $1 < @ $(mailertable $2 $) > $3 476R$* < @ $-:$+ > $* $# $2 $@ $3 $: $1 < @ $3 > $4 found a match', 477`dnl') 478 479# short circuit local delivery so forwarded email works 480ifdef(`_LOCAL_NOT_STICKY_', 481`R$=L < @ $j . > $#local $: @ $1 special local names 482R$+ < @ $j . > $#local $: $1 dispose directly', 483`R$+ < @ $j . > $: $1 < @ $j @ $H > first try hub 484ifdef(`_OLD_SENDMAIL_', 485`R$+ < $+ @ $-:$+ > $# $3 $@ $4 $: $1 < $2 > yep .... 486R$+ < $+ @ $+ > $#relay $@ $3 $: $1 < $2 > yep .... 487R$+ < $+ @ > $#local $: $1 nope, local address', 488`R$+ < $+ @ $+ > $#local $: $1 yep .... 489R$+ < $+ @ > $#local $: @ $1 nope, local address')') 490undivert(3)dnl 491undivert(4)dnl 492 493# resolve remotely connected UUCP links (if any) 494ifdef(`_CLASS_V_', 495`R$* < @ $=V . UUCP > $* $#smtp $@ $V $: <@ $V> : $1 @ $2.UUCP $3', 496 `dnl') 497ifdef(`_CLASS_W_', 498`R$* < @ $=W . UUCP > $* $#smtp $@ $W $: <@ $W> : $1 @ $2.UUCP $3', 499 `dnl') 500ifdef(`_CLASS_X_', 501`R$* < @ $=X . UUCP > $* $#smtp $@ $X $: <@ $X> : $1 @ $2.UUCP $3', 502 `dnl') 503 504# resolve fake top level domains by forwarding to other hosts 505ifdef(`BITNET_RELAY', 506`R$*<@$+.BITNET>$* $#smtp $@ $B $: $1 <@$2.BITNET> $3 user@host.BITNET', 507 `dnl') 508ifdef(`CSNET_RELAY', 509`R$*<@$+.CSNET>$* $#smtp $@ $C $: $1 <@$2.CSNET> $3 user@host.CSNET', 510 `dnl') 511ifdef(`_MAILER_fax_', 512`R$+ < @ $+ .FAX > $#fax $@ $2 $: $1 user@host.FAX', 513`ifdef(`FAX_RELAY', 514`R$*<@$+.FAX>$* $#smtp $@ $F $: $1 <@$2.FAX> $3 user@host.FAX', 515 `dnl')') 516 517ifdef(`UUCP_RELAY', 518`# forward non-local UUCP traffic to our UUCP relay 519R$*<@$*.UUCP>$* $#smtp $@ $Y $: <@ $Y> : $1 @ $2.UUCP $3 uucp mail', 520`ifdef(`_MAILER_uucp_', 521`# forward other UUCP traffic straight to UUCP 522R< @ $+ .UUCP > : $+ $#uucp $@ $1 $: $2 @host.UUCP:... 523R$+ < @ $+ .UUCP > $#uucp $@ $2 $: $1 user@host.UUCP', 524 `dnl')') 525 526ifdef(`_LOCAL_RULES_', 527`# figure out what should stay in our local mail system 528undivert(1)', 529`ifdef(`_MAILER_smtp_', 530`# deal with other remote names 531R$* < @ $* > $* $#smtp $@ $2 $: $1 < @ $2 > $3 user@host.domain')') 532ifdef(`SMART_HOST', ` 533# pass names that still have a host to a smarthost 534R$* < @ $* > $* $: < $S > $1 < @ $2 > $3 glue on smarthost name 535R<$-:$+> $* < @$* > $* $# $1 $@ $2 $: $3 < @ $4 > $5 if non-null, use it 536R<$+> $* < @$* > $* $#suucp $@ $1 $: $2 < @ $3 > $4 if non-null, use it 537R<> $* < @ $* > $* $1 < @ $2 > $3 else strip off gunk', 538`ifdef(`_LOCAL_RULES_', ` 539# reject messages that have host names we do not understand 540R$* < @ $* > $* $#error $@ NOHOST $: Unrecognized host name $2', 541`dnl')') 542ifdef(`_MAILER_USENET_', ` 543# addresses sent to net.group.USENET will get forwarded to a newsgroup 544R$+ . USENET $# usenet $: $1') 545 546ifdef(`_OLD_SENDMAIL_', 547`# forward remaining names to local relay, if any 548R$=L $#local $: $1 special local names 549R$+ $: $1 < @ $R > append relay 550R$+ < @ > $: $1 < @ $H > no relay, try hub 551R$+ < @ > $#local $: $1 no relay or hub: local 552R$+ < @ $j > $#local $: $1 we are relay/hub: local 553R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 deliver to relay/hub 554R$+ < @ $+ > $#relay $@ $2 $: $1 deliver to relay/hub', 555 556`# if this is quoted, strip the quotes and try again 557R$+ $: $(dequote $1 $) strip quotes 558R$* $=O $* $@ $>7 $1 $2 $3 try again 559 560# handle locally delivered names 561R$=L $#local $: @ $1 special local names 562R$+ $#local $: $1 regular local names 563 564########################################################################### 565### Ruleset 5 -- special rewriting after aliases have been expanded ### 566### (new sendmail only) ### 567########################################################################### 568 569S5 570 571# see if we have a relay or a hub 572R$+ $: $1 < @ $R > 573R$+ < @ > $: $1 < @ $H > no relay, try hub 574R$+ < @ $j > $@ $1 we are relay/hub: local 575R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 send to relay or hub 576ifdef(`_MAILER_smtp_', 577`R$+ < @ $+ > $#relay $@ $2 $: $1 send to relay or hub')') 578# 579###################################################################### 580###################################################################### 581##### 582`##### MAILER DEFINITIONS' 583##### 584###################################################################### 585###################################################################### 586undivert(7)dnl 587