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 6.42 (Berkeley) 06/01/93') 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# log level 201CONCAT(OL, confLOG_LEVEL) 202 203# send to me too, even in an alias expansion? 204CONCAT(Om, confME_TOO) 205 206# verify RHS in newaliases? 207CONCAT(On, confCHECK_ALIASES) 208 209# default messages to old style headers if no special punctuation? 210CONCAT(Oo, confOLD_STYLE_HEADERS) 211 212# SMTP daemon options 213ifdef(`confDAEMON_OPTIONS', 214 CONCAT(OO, confDAEMON_OPTIONS), 215 #OOPort=esmtp) 216 217# privacy flags 218CONCAT(Op, confPRIVACY_FLAGS) 219 220# who (if anyone) should get extra copies of error messages 221ifdef(`confCOPY_ERRORS_TO', 222 CONCAT(OP, confCOPY_ERRORS_TO), 223 #OPPostmaster) 224 225# slope of queue-only function 226ifdef(`confQUEUE_FACTOR', 227 CONCAT(Oq, confQUEUE_FACTOR), 228 #Oq600000) 229 230# queue directory 231CONCAT(OQ, ifdef(`QUEUE_DIR', QUEUE_DIR, /var/spool/mqueue)) 232 233# read timeout -- now OK per RFC 1123 section 5.3.2 234ifdef(`confREAD_TIMEOUT', 235 CONCAT(Or, confREAD_TIMEOUT), 236 #Ordatablock=10m) 237 238# queue up everything before forking? 239CONCAT(Os, confSAFE_QUEUE) 240 241# status file 242CONCAT(OS, ifdef(`STATUS_FILE', STATUS_FILE, /etc/sendmail.st)) 243 244# default message timeout interval 245CONCAT(OT, confMESSAGE_TIMEOUT) 246 247# time zone handling: 248# if undefined, use system default 249# if defined but null, use TZ envariable passed in 250# if defined and non-null, use that info 251ifelse(confTIME_ZONE, `USE_SYSTEM', `#Ot', 252 confTIME_ZONE, `USE_TZ', `', 253 `CONCAT(Ot, confTIME_ZONE)') 254 255# default UID 256CONCAT(Ou, confDEF_USER_ID) 257 258# list of locations of user database file (null means no lookup) 259OU`'ifdef(`confUSERDB_SPEC', `confUSERDB_SPEC') 260 261# fallback MX host 262ifdef(`confFALLBACK_MX', 263 CONCAT(OV, confFALLBACK_MX), 264 #OVfall.back.host.net) 265 266# load average at which we just queue messages 267CONCAT(Ox, confQUEUE_LA) 268 269# load average at which we refuse connections 270CONCAT(OX, confREFUSE_LA) 271 272# work recipient factor 273ifdef(`confWORK_RECIPIENT_FACTOR', 274 CONCAT(Oy, confWORK_RECIPIENT_FACTOR), 275 #Oy30000) 276 277# deliver each queued job in a separate process? 278CONCAT(OY, confSEPARATE_PROC) 279 280# work class factor 281ifdef(`confWORK_CLASS_FACTOR', 282 CONCAT(Oz, confWORK_CLASS_FACTOR), 283 #Oz1800) 284 285# work time factor 286ifdef(`confWORK_TIME_FACTOR', 287 CONCAT(OZ, confWORK_TIME_FACTOR), 288 #OZ90000) 289 290########################### 291# Message precedences # 292########################### 293 294Pfirst-class=0 295Pspecial-delivery=100 296Plist=-30 297Pbulk=-60 298Pjunk=-100 299 300##################### 301# Trusted users # 302##################### 303 304Troot 305Tdaemon 306Tuucp 307 308######################### 309# Format of headers # 310######################### 311 312H?P?Return-Path: $g 313HReceived: $?sfrom $s $.$?_($_) $.by $j ($v/$Z)$?r with $r$. id $i; $b 314H?D?Resent-Date: $a 315H?D?Date: $a 316H?F?Resent-From: $q 317H?F?From: $q 318H?x?Full-Name: $x 319HSubject: 320# HPosted-Date: $a 321# H?l?Received-Date: $b 322H?M?Resent-Message-Id: <$t.$i@$j> 323H?M?Message-Id: <$t.$i@$j> 324# 325###################################################################### 326###################################################################### 327##### 328##### REWRITING RULES 329##### 330###################################################################### 331###################################################################### 332 333undivert(9)dnl 334 335########################################### 336### Rulset 3 -- Name Canonicalization ### 337########################################### 338S3 339 340# handle null input and list syntax (translate to <@> special case) 341R$@ $@ <@> 342R$*:;$* $@ $1 :; <@> 343 344# basic textual canonicalization -- note RFC733 heuristic here 345R$*<$*>$*<$*>$* <$2>$3$4$5 strip multiple <> <> 346R$*<$*<$+>$*>$* <$3>$5 2-level <> nesting 347R$*<>$* $@ <@> MAIL FROM:<> case 348R$*<$+>$* $2 basic RFC821/822 parsing 349 350# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later 351R@ $+ , $+ @ $1 : $2 change all "," to ":" 352 353# localize and dispose of route-based addresses 354R@ $+ : $+ $@ $>_SET_96_ < @$1 > : $2 handle <route-addr> 355 356# find focus for list syntax 357R $+ : $* ; @ $+ $@ $>_SET_96_ $1 : $2 ; < @ $3 > list syntax 358R $+ : $* ; $@ $1 : $2; list syntax 359 360# find focus for @ syntax addresses 361R$+ @ $+ $: $1 < @ $2 > focus on domain 362R$+ < $+ @ $+ > $1 $2 < @ $3 > move gaze right 363R$+ < @ $+ > $@ $>_SET_96_ $1 < @ $2 > already canonical 364 365ifdef(`_NO_UUCP_', `dnl', 366`# convert old-style addresses to a domain-based address 367R$- ! $+ $@ $>_SET_96_ $2 < @ $1 .UUCP > resolve uucp names 368R$+ . $- ! $+ $@ $>_SET_96_ $3 < @ $1 . $2 > domain uucps 369R$+ ! $+ $@ $>_SET_96_ $2 < @ $1 .UUCP > uucp subdomains') 370 371# if we have % signs, take the rightmost one 372R$* % $* $1 @ $2 First make them all @s. 373R$* @ $* @ $* $1 % $2 @ $3 Undo all but the last. 374R$* @ $* $@ $>_SET_96_ $1 < @ $2 > Insert < > and finish 375 376# else we must be a local name 377 378 379################################################ 380### Ruleset _SET_96_ -- bottom half of ruleset 3 ### 381################################################ 382 383# At this point, everything should be in a "local_part<@domain>extra" format. 384S`'_SET_96_ 385 386# handle special cases for local names 387R$* < @ localhost > $* $: $1 < @ $j . > $2 no domain at all 388R$* < @ localhost . $m > $* $: $1 < @ $j . > $2 local domain 389ifdef(`_NO_UUCP_', `dnl', 390`R$* < @ localhost . UUCP > $* $: $1 < @ $j . > $2 .UUCP domain') 391undivert(2)dnl 392 393ifdef(`_NO_UUCP_', `dnl', 394`ifdef(`UUCP_RELAY', 395`# pass UUCP addresses straight through 396R$* < @ $+ . UUCP > $* $@ $1 < @ $2 . UUCP > $3', 397`# if really UUCP, handle it immediately 398ifdef(`_CLASS_U_', 399`R$* < @ $=U . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 400ifdef(`_CLASS_V_', 401`R$* < @ $=V . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 402ifdef(`_CLASS_W_', 403`R$* < @ $=W . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 404ifdef(`_CLASS_X_', 405`R$* < @ $=X . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 406ifdef(`_CLASS_Y_', 407`R$* < @ $=Y . UUCP > $* $@ $1 < @ $2 . UUCP > $3', `dnl') 408 409# try UUCP traffic as a local address 410R$* < @ $+ . UUCP > $* $: $1 < @ $[ $2 $] . UUCP > $3 411ifdef(`_OLD_SENDMAIL_', 412`R$* < @ $+ . $+ . UUCP > $* $@ $1 < @ $2 . $3 . > $4', 413`R$* < @ $+ . . UUCP > $* $@ $1 < @ $2 . > $3')') 414') 415ifdef(`_NO_CANONIFY_', `dnl', 416`# pass to name server to make hostname canonical 417R$* < @ $* $~P > $* $: $1 < @ $[ $2 $3 $] > $4 418') 419undivert(8)dnl 420 421# if this is the local hostname, make sure we treat is as canonical 422R$* < @ $j > $* $: $1 < @ $j . > $2 423 424 425################################################## 426### Ruleset 4 -- Final Output Post-rewriting ### 427################################################## 428S4 429 430R$*<@> $@ $1 handle <> and list:; 431 432# resolve numeric addresses to name if possible 433R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 lookup numeric internet addr 434 435# strip trailing dot off possibly canonical name 436R$* < @ $+ . > $* $1 < @ $2 > $3 437 438# externalize local domain info 439R$* < $+ > $* $1 $2 $3 defocus 440R@ $+ : @ $+ : $+ @ $1 , @ $2 : $3 <route-addr> canonical 441R@ $* $@ @ $1 ... and exit 442 443ifdef(`_NO_UUCP_', `dnl', 444`# UUCP must always be presented in old form 445R$+ @ $- . UUCP $2!$1 u@h.UUCP => h!u') 446 447# delete duplicate local names 448R$+ % $=w @ $=w $1 @ $j u%host@host => u@host 449 450 451 452############################################################## 453### Ruleset _SET_97_ -- recanonicalize and call ruleset zero ### 454### (used for recursive calls) ### 455############################################################## 456 457S`'_SET_97_ 458R$* $: $>3 $1 459R$* $@ $>0 $1 460 461 462###################################### 463### Ruleset 0 -- Parse Address ### 464###################################### 465 466S0 467 468R<@> $#local $: <> special case error msgs 469R$*:;<@> $#error $@ USAGE $: "list:; syntax illegal for recipient addresses" 470 471ifdef(`_MAILER_smtp_', 472`# handle numeric address spec 473R$* < @ [ $+ ] > $* $: $1 < @ $[ [$2] $] > $3 numeric internet addr 474R$* < @ [ $+ ] > $* $#smtp $@ [$2] $: $1 @ [$2] $3 numeric internet spec', 475`dnl') 476 477# now delete the local info -- note $=O to find characters that cause forwarding 478R$* < @ > $* $@ $>_SET_97_ $1 user@ => user 479R< @ $=w . > : $* $@ $>_SET_97_ $2 @here:... -> ... 480R$* $=O $* < @ $=w . > $@ $>_SET_97_ $1 $2 $3 ...@here -> ... 481ifdef(`MAILER_TABLE', 482` 483# try mailer table lookup 484R$* <@ $+ > $* $: < $2 > $1 < @ $2 > $3 extract host name 485R<$+ . > $* $: < $1 > $2 strip trailing dot 486R<$- . $+ > $* $: < $(mailertable .$2 $: $) > $3 lookup 487R<$- : $+ > $* $# $1 $@ $2 $: $3 check -- resolved? 488R<$- . $+ > $* $: $>90 <$2> $3 try domain', 489`dnl') 490 491# short circuit local delivery so forwarded email works 492ifdef(`_LOCAL_NOT_STICKY_', 493`R$=L < @ $=w . > $#local $: @ $1 special local names 494R$+ < @ $=w . > $#local $: $1 dispose directly', 495`R$+ < @ $=w . > $: $1 < @ $2 @ $H > first try hub 496ifdef(`_OLD_SENDMAIL_', 497`R$+ < $+ @ $-:$+ > $# $3 $@ $4 $: $1 < $2 > yep .... 498R$+ < $+ @ $+ > $#relay $@ $3 $: $1 < $2 > yep .... 499R$+ < $+ @ > $#local $: $1 nope, local address', 500`R$+ < $+ @ $+ > $#local $: $1 yep .... 501R$+ < $+ @ > $#local $: @ $1 nope, local address')') 502undivert(3)dnl 503undivert(4)dnl 504 505# resolve remotely connected UUCP links (if any) 506ifdef(`_CLASS_V_', 507`R$* < @ $=V . UUCP > $* $#smtp $@ $V $: <@ $V> : $1 @ $2.UUCP $3', 508 `dnl') 509ifdef(`_CLASS_W_', 510`R$* < @ $=W . UUCP > $* $#smtp $@ $W $: <@ $W> : $1 @ $2.UUCP $3', 511 `dnl') 512ifdef(`_CLASS_X_', 513`R$* < @ $=X . UUCP > $* $#smtp $@ $X $: <@ $X> : $1 @ $2.UUCP $3', 514 `dnl') 515 516# resolve fake top level domains by forwarding to other hosts 517ifdef(`BITNET_RELAY', 518`R$*<@$+.BITNET>$* $#smtp $@ $B. $: $1 <@$2.BITNET> $3 user@host.BITNET', 519 `dnl') 520ifdef(`CSNET_RELAY', 521`R$*<@$+.CSNET>$* $#smtp $@ $C. $: $1 <@$2.CSNET> $3 user@host.CSNET', 522 `dnl') 523ifdef(`_MAILER_fax_', 524`R$+ < @ $+ .FAX > $#fax $@ $2 $: $1 user@host.FAX', 525`ifdef(`FAX_RELAY', 526`R$*<@$+.FAX>$* $#smtp $@ $F. $: $1 <@$2.FAX> $3 user@host.FAX', 527 `dnl')') 528 529ifdef(`UUCP_RELAY', 530`# forward non-local UUCP traffic to our UUCP relay 531R$*<@$*.UUCP>$* $#smtp $@ $Y. $: <@ $Y> : $1 @ $2.UUCP $3 uucp mail', 532`ifdef(`_MAILER_uucp_', 533`# forward other UUCP traffic straight to UUCP 534R< @ $+ .UUCP > : $+ $#uucp $@ $1 $: $2 @host.UUCP:... 535R$+ < @ $+ .UUCP > $#uucp $@ $2 $: $1 user@host.UUCP', 536 `dnl')') 537 538ifdef(`_LOCAL_RULES_', 539`# figure out what should stay in our local mail system 540undivert(1)', 541`ifdef(`_MAILER_smtp_', 542`# deal with other remote names 543R$* < @ $* > $* $#smtp $@ $2 $: $1 < @ $2 > $3 user@host.domain')') 544ifdef(`SMART_HOST', ` 545# pass names that still have a host to a smarthost 546R$* < @ $* > $* $: < $S > $1 < @ $2 > $3 glue on smarthost name 547R<$-:$+> $* < @$* > $* $# $1 $@ $2 $: $3 < @ $4 > $5 if non-null, use it 548R<$+> $* < @$* > $* $#suucp $@ $1 $: $2 < @ $3 > $4 if non-null, use it 549R<> $* < @ $* > $* $1 < @ $2 > $3 else strip off gunk', 550`ifdef(`_LOCAL_RULES_', ` 551# reject messages that have host names we do not understand 552R$* < @ $* > $* $#error $@ NOHOST $: Unrecognized host name $2', 553`dnl')') 554ifdef(`_MAILER_USENET_', ` 555# addresses sent to net.group.USENET will get forwarded to a newsgroup 556R$+ . USENET $# usenet $: $1') 557 558ifdef(`_OLD_SENDMAIL_', 559`# forward remaining names to local relay, if any 560R$=L $#local $: $1 special local names 561R$+ $: $1 < @ $R > append relay 562R$+ < @ > $: $1 < @ $H > no relay, try hub 563R$+ < @ > $#local $: $1 no relay or hub: local 564R$+ < @ $=w > $#local $: $1 we are relay/hub: local 565R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 deliver to relay/hub 566R$+ < @ $+ > $#relay $@ $2 $: $1 deliver to relay/hub', 567 568`# if this is quoted, strip the quotes and try again 569R$+ $: $(dequote $1 $) strip quotes 570R$* $=O $* $@ $>_SET_97_ $1 $2 $3 try again 571 572# handle locally delivered names 573R$=L $#local $: @ $1 special local names 574R$+ $#local $: $1 regular local names 575 576########################################################################### 577### Ruleset 5 -- special rewriting after aliases have been expanded ### 578### (new sendmail only) ### 579########################################################################### 580 581S5 582 583# see if we have a relay or a hub 584R$+ $: $1 < @ $R > 585R$+ < @ > $: $1 < @ $H > no relay, try hub 586R$+ < @ $=w > $@ $1 we are relay/hub: local 587R$+ < @ $-:$+ > $# $2 $@ $3 $: $1 send to relay or hub 588ifdef(`_MAILER_smtp_', 589`R$+ < @ $+ > $#relay $@ $2 $: $1 send to relay or hub')') 590ifdef(`MAILER_TABLE', 591` 592 593########################################################################### 594### Ruleset 90 -- try domain part of mailertable entry ### 595### (new sendmail only) ### 596########################################################################### 597 598S90 599R<$- . $+ > $* $: < $(mailertable .$2 $: $) > $3 lookup 600R<$- : $+ > $* $# $1 $@ $2 $: $3 check -- resolved? 601R<$- . $+ > $* $@ $>90 <$2> $3 no -- strip & try again 602R<$*> $* $@ $2 no match', 603`dnl') 604# 605###################################################################### 606###################################################################### 607##### 608`##### MAILER DEFINITIONS' 609##### 610###################################################################### 611###################################################################### 612undivert(7)dnl 613