xref: /original-bsd/usr.sbin/sendmail/cf/m4/proto.m4 (revision f4a18198)
1divert(-1)
2#
3# Copyright (c) 1983 Eric P. Allman
4# Copyright (c) 1988, 1993
5#	The Regents of the University of California.  All rights reserved.
6#
7# %sccs.include.redist.sh%
8#
9divert(0)
10
11VERSIONID(`@(#)proto.m4	8.48 (Berkeley) 06/25/94')
12
13MAILER(local)dnl
14
15ifdef(`_OLD_SENDMAIL_',
16`define(`_SET_95_', 5)dnl
17define(`_SET_96_', 6)dnl
18define(`_SET_97_', 7)dnl
19define(`_SET_98_', 8)dnl
20define(`confDOMAIN_NAME',
21	`ifdef(`NEED_DOMAIN', `$w.$d', `$w')')dnl',
22`# level 5 config file format
23V5
24define(`_SET_95_', 95)dnl
25define(`_SET_96_', 96)dnl
26define(`_SET_97_', 97)dnl
27define(`_SET_98_', 98)dnl')
28ifdef(`confSMTP_MAILER',, `define(`confSMTP_MAILER', `smtp')')dnl
29ifdef(`confLOCAL_MAILER',, `define(`confLOCAL_MAILER', `local')')dnl
30ifdef(`confRELAY_MAILER',,
31	`define(`confRELAY_MAILER',
32		`ifdef(`_MAILER_smtp_', `relay',
33			`ifdef(`_MAILER_uucp', `suucp', `unknown')')')')dnl
34define(`_SMTP_', `confSMTP_MAILER')dnl		for readability only
35define(`_LOCAL_', `confLOCAL_MAILER')dnl	for readability only
36define(`_RELAY_', `confRELAY_MAILER')dnl	for readability only
37
38##################
39#   local info   #
40##################
41
42Cwlocalhost
43ifdef(`USE_CW_FILE',
44`# file containing names of hosts for which we receive email
45Fw`'confCW_FILE',
46	`dnl')
47ifdef(`confDOMAIN_NAME', `
48# my official domain name
49Dj`'confDOMAIN_NAME',
50	`dnl')
51
52ifdef(`_NULL_CLIENT_ONLY_',
53`include(../m4/nullrelay.m4)m4exit',
54	`dnl')
55
56CP.
57
58ifdef(`UUCP_RELAY',
59`# UUCP relay host
60DY`'UUCP_RELAY
61CPUUCP
62
63')dnl
64ifdef(`BITNET_RELAY',
65`#  BITNET relay host
66DB`'BITNET_RELAY
67CPBITNET
68
69')dnl
70ifdef(`FAX_RELAY',
71`# FAX relay host
72DF`'FAX_RELAY
73CPFAX
74
75')dnl
76# "Smart" relay host (may be null)
77DS`'ifdef(`SMART_HOST', SMART_HOST)
78
79ifdef(`MAILER_TABLE',
80`# Mailer table (overriding domains)
81Kmailertable MAILER_TABLE
82
83')dnl
84ifdef(`DOMAIN_TABLE',
85`# Domain table (adding domains)
86Kdomaintable DOMAIN_TABLE
87
88')dnl
89# who I send unqualified names to (null means deliver locally)
90DR`'ifdef(`LOCAL_RELAY', LOCAL_RELAY)
91
92# who gets all local email traffic ($R has precedence for unqualified names)
93DH`'ifdef(`MAIL_HUB', MAIL_HUB)
94
95# who I masquerade as (null for no masquerading)
96DM`'ifdef(`MASQUERADE_NAME', MASQUERADE_NAME)
97
98# class L: names that should be delivered locally, even if we have a relay
99# class E: names that should be exposed as from this host, even if we masquerade
100#CLroot
101CEroot
102undivert(5)dnl
103
104# operators that cannot be in local usernames (i.e., network indicators)
105CO @ % ifdef(`_NO_UUCP_', `', `!')
106
107# a class with just dot (for identifying canonical names)
108C..
109
110ifdef(`_OLD_SENDMAIL_', `dnl',
111`# dequoting map
112Kdequote dequote')
113
114undivert(6)dnl
115
116######################
117#   Special macros   #
118######################
119
120# SMTP initial login message
121De`'confSMTP_LOGIN_MSG
122
123# UNIX initial From header format
124Dl`'confFROM_LINE
125
126# my name for error messages
127Dn`'confMAILER_NAME
128
129# delimiter (operator) characters
130Do`'confOPERATORS
131
132# format of a total name
133Dq`'ifdef(`confFROM_HEADER', confFROM_HEADER,
134	ifdef(`_OLD_SENDMAIL_', `$g$?x ($x)$.', `$?x$x <$g>$|$g$.'))
135include(`../m4/version.m4')
136
137###############
138#   Options   #
139###############
140
141# strip message body to 7 bits on input?
142O7`'confSEVEN_BIT_INPUT
143
144# wait (in minutes) for alias file rebuild
145Oa`'confALIAS_WAIT
146
147# location of alias file
148OA`'ifdef(`ALIAS_FILE', `ALIAS_FILE', /etc/aliases)
149
150# minimum number of free blocks on filesystem
151Ob`'confMIN_FREE_BLOCKS
152
153# substitution for space (blank) characters
154OB`'confBLANK_SUB
155
156# avoid connecting to "expensive" mailers on initial submission?
157Oc`'confCON_EXPENSIVE
158
159# checkpoint queue runs after every N successful deliveries
160OC`'confCHECKPOINT_INTERVAL
161
162# default delivery mode
163Od`'confDELIVERY_MODE
164
165# automatically rebuild the alias database?
166OD`'confAUTO_REBUILD
167
168# error message header/file
169ifdef(`confERROR_MESSAGE',
170	OE`'confERROR_MESSAGE,
171	#OE/etc/sendmail.oE)
172
173# error mode
174ifdef(`confERROR_MODE',
175	Oe`'confERROR_MODE,
176	#Oep)
177
178# save Unix-style "From_" lines at top of header?
179Of`'confSAVE_FROM_LINES
180
181# temporary file mode
182OF`'confTEMP_FILE_MODE
183
184# match recipients against GECOS field?
185OG`'confMATCH_GECOS
186
187# default GID
188Og`'confDEF_GROUP_ID
189
190# maximum hop count
191Oh`'confMAX_HOP
192
193# location of help file
194OH`'ifdef(`HELP_FILE', HELP_FILE, /usr/lib/sendmail.hf)
195
196# ignore dots as terminators in incoming messages?
197Oi`'confIGNORE_DOTS
198
199# Insist that the BIND name server be running to resolve names
200ifdef(`confBIND_OPTS',
201	OI`'confBIND_OPTS,
202	#OI)
203
204# deliver MIME-encapsulated error messages?
205Oj`'confMIME_FORMAT_ERRORS
206
207# Forward file search path
208ifdef(`confFORWARD_PATH',
209	OJ`'confFORWARD_PATH,
210	#OJ/var/forward/$u:$z/.forward.$w:$z/.forward)
211
212# open connection cache size
213Ok`'confMCI_CACHE_SIZE
214
215# open connection cache timeout
216OK`'confMCI_CACHE_TIMEOUT
217
218# use Errors-To: header?
219Ol`'confUSE_ERRORS_TO
220
221# log level
222OL`'confLOG_LEVEL
223
224# send to me too, even in an alias expansion?
225Om`'confME_TOO
226
227# verify RHS in newaliases?
228On`'confCHECK_ALIASES
229
230# default messages to old style headers if no special punctuation?
231Oo`'confOLD_STYLE_HEADERS
232
233# SMTP daemon options
234ifdef(`confDAEMON_OPTIONS',
235	OO`'confDAEMON_OPTIONS,
236	#OOPort=esmtp)
237
238# privacy flags
239Op`'confPRIVACY_FLAGS
240
241# who (if anyone) should get extra copies of error messages
242ifdef(`confCOPY_ERRORS_TO',
243	OP`'confCOPY_ERRORS_TO,
244	#OPPostmaster)
245
246# slope of queue-only function
247ifdef(`confQUEUE_FACTOR',
248	Oq`'confQUEUE_FACTOR,
249	#Oq600000)
250
251# queue directory
252OQ`'ifdef(`QUEUE_DIR', QUEUE_DIR, /var/spool/mqueue)
253
254# read timeout -- now OK per RFC 1123 section 5.3.2
255ifdef(`confREAD_TIMEOUT',
256	Or`'confREAD_TIMEOUT,
257	#Ordatablock=10m)
258
259# queue up everything before forking?
260Os`'confSAFE_QUEUE
261
262# status file
263OS`'ifdef(`STATUS_FILE', STATUS_FILE, /etc/sendmail.st)
264
265# default message timeout interval
266OT`'confMESSAGE_TIMEOUT
267
268# time zone handling:
269#  if undefined, use system default
270#  if defined but null, use TZ envariable passed in
271#  if defined and non-null, use that info
272ifelse(confTIME_ZONE, `USE_SYSTEM', `#Ot',
273	confTIME_ZONE, `USE_TZ', `Ot',
274	`Ot`'confTIME_ZONE')
275
276# default UID
277Ou`'confDEF_USER_ID
278
279# list of locations of user database file (null means no lookup)
280OU`'ifdef(`confUSERDB_SPEC', `confUSERDB_SPEC')
281
282# fallback MX host
283ifdef(`confFALLBACK_MX',
284	OV`'confFALLBACK_MX,
285	#OVfall.back.host.net)
286
287# if we are the best MX host for a site, try it directly instead of config err
288Ow`'confTRY_NULL_MX_LIST
289
290# load average at which we just queue messages
291Ox`'confQUEUE_LA
292
293# load average at which we refuse connections
294OX`'confREFUSE_LA
295
296# work recipient factor
297ifdef(`confWORK_RECIPIENT_FACTOR',
298	Oy`'confWORK_RECIPIENT_FACTOR,
299	#Oy30000)
300
301# deliver each queued job in a separate process?
302OY`'confSEPARATE_PROC
303
304# work class factor
305ifdef(`confWORK_CLASS_FACTOR',
306	Oz`'confWORK_CLASS_FACTOR,
307	#Oz1800)
308
309# work time factor
310ifdef(`confWORK_TIME_FACTOR',
311	OZ`'confWORK_TIME_FACTOR,
312	#OZ90000)
313
314###########################
315#   Message precedences   #
316###########################
317
318Pfirst-class=0
319Pspecial-delivery=100
320Plist=-30
321Pbulk=-60
322Pjunk=-100
323
324#####################
325#   Trusted users   #
326#####################
327
328Troot
329Tdaemon
330Tuucp
331
332#########################
333#   Format of headers   #
334#########################
335
336H?P?Return-Path: $g
337HReceived: $?sfrom $s $.$?_($?s$|from $.$_) $.by $j ($v/$Z)$?r with $r$. id $i$?u for $u$.; $b
338H?D?Resent-Date: $a
339H?D?Date: $a
340H?F?Resent-From: $q
341H?F?From: $q
342H?x?Full-Name: $x
343HSubject:
344# HPosted-Date: $a
345# H?l?Received-Date: $b
346H?M?Resent-Message-Id: <$t.$i@$j>
347H?M?Message-Id: <$t.$i@$j>
348#
349######################################################################
350######################################################################
351#####
352#####			REWRITING RULES
353#####
354######################################################################
355######################################################################
356
357undivert(9)dnl
358
359###########################################
360###  Rulset 3 -- Name Canonicalization  ###
361###########################################
362S3
363
364# handle null input (translate to <@> special case)
365R$@			$@ <@>
366
367# basic textual canonicalization -- note RFC733 heuristic here
368R$*<$*>$*<$*>$*		$2$3<$4>$5			strip multiple <> <>
369R$*<$*<$+>$*>$*		<$3>$5				2-level <> nesting
370R$*<>$*			$@ <@>				MAIL FROM:<> case
371R$*<$+>$*		$2				basic RFC821/822 parsing
372
373# handle list:; syntax as special case
374R$*:;$*			$@ $1 :; <@>
375
376# make sure <@a,@b,@c:user@d> syntax is easy to parse -- undone later
377R@ $+ , $+		@ $1 : $2			change all "," to ":"
378
379# localize and dispose of route-based addresses
380R@ $+ : $+		$@ $>_SET_96_ < @$1 > : $2		handle <route-addr>
381
382# find focus for list syntax
383R $+ : $* ; @ $+	$@ $>_SET_96_ $1 : $2 ; < @ $3 >	list syntax
384R $+ : $* ;		$@ $1 : $2;			list syntax
385
386# find focus for @ syntax addresses
387R$+ @ $+		$: $1 < @ $2 >			focus on domain
388R$+ < $+ @ $+ >		$1 $2 < @ $3 >			move gaze right
389R$+ < @ $+ >		$@ $>_SET_96_ $1 < @ $2 >		already canonical
390
391# do some sanity checking
392R$* < @ $* : $* > $*	$1 < @ $2 $3 > $4		nix colons in addrs
393
394ifdef(`_NO_UUCP_', `dnl',
395`# convert old-style addresses to a domain-based address
396R$- ! $+		$@ $>_SET_96_ $2 < @ $1 .UUCP >	resolve uucp names
397R$+ . $- ! $+		$@ $>_SET_96_ $3 < @ $1 . $2 >		domain uucps
398R$+ ! $+		$@ $>_SET_96_ $2 < @ $1 .UUCP >	uucp subdomains')
399
400# if we have % signs, take the rightmost one
401R$* % $*		$1 @ $2				First make them all @s.
402R$* @ $* @ $*		$1 % $2 @ $3			Undo all but the last.
403R$* @ $*		$@ $>_SET_96_ $1 < @ $2 >		Insert < > and finish
404
405# else we must be a local name
406
407
408################################################
409###  Ruleset _SET_96_ -- bottom half of ruleset 3  ###
410################################################
411
412#  At this point, everything should be in a "local_part<@domain>extra" format.
413S`'_SET_96_
414
415# handle special cases for local names
416R$* < @ localhost > $*		$: $1 < @ $j . > $2		no domain at all
417R$* < @ localhost . $m > $*	$: $1 < @ $j . > $2		local domain
418ifdef(`_NO_UUCP_', `dnl',
419`R$* < @ localhost . UUCP > $*	$: $1 < @ $j . > $2		.UUCP domain')
420R$* < @ [ $+ ] > $*		$: $1 < @@ [ $2 ] > $3		mark [a.b.c.d]
421R$* < @@ $=w > $*		$: $1 < @ $j . > $3		self-literal
422R$* < @@ $+ > $*		$@ $1 < @ $2 > $3		canon IP addr
423ifdef(`DOMAIN_TABLE', `
424# look up domains in the domain table
425R$* < @ $+ > $*			$: $1 < @ $(domaintable $2 $) > $3',
426`dnl')
427undivert(2)dnl
428
429ifdef(`_NO_UUCP_', `dnl',
430`ifdef(`UUCP_RELAY',
431`# pass UUCP addresses straight through
432R$* < @ $+ . UUCP > $*		$@ $1 < @ $2 . UUCP . > $3',
433`# if really UUCP, handle it immediately
434ifdef(`_CLASS_U_',
435`R$* < @ $=U . UUCP > $*	$@ $1 < @ $2 . UUCP . > $3', `dnl')
436ifdef(`_CLASS_V_',
437`R$* < @ $=V . UUCP > $*	$@ $1 < @ $2 . UUCP . > $3', `dnl')
438ifdef(`_CLASS_W_',
439`R$* < @ $=W . UUCP > $*	$@ $1 < @ $2 . UUCP . > $3', `dnl')
440ifdef(`_CLASS_X_',
441`R$* < @ $=X . UUCP > $*	$@ $1 < @ $2 . UUCP . > $3', `dnl')
442ifdef(`_CLASS_Y_',
443`R$* < @ $=Y . UUCP > $*	$@ $1 < @ $2 . UUCP . > $3', `dnl')
444
445# try UUCP traffic as a local address
446R$* < @ $+ . UUCP > $*		$: $1 < @ $[ $2 $] . UUCP . > $3
447ifdef(`_OLD_SENDMAIL_',
448`R$* < @ $+ . $+ . UUCP . > $*		$@ $1 < @ $2 . $3 . > $4',
449`R$* < @ $+ . . UUCP . > $*		$@ $1 < @ $2 . > $3')')
450')
451ifdef(`_NO_CANONIFY_', `dnl',
452`# pass to name server to make hostname canonical
453R$* < @ $* $~P > $*		$: $1 < @ $[ $2 $3 $] > $4')
454
455# local host aliases and pseudo-domains are always canonical
456R$* < @ $=w > $*		$: $1 < @ $2 . > $3
457R$* < @ $* $=P > $*		$: $1 < @ $2 $3 . > $4
458R$* < @ $* . . > $*		$1 < @ $2 . > $3
459
460# if this is the local hostname, make sure we treat is as canonical
461R$* < @ $j > $*			$: $1 < @ $j . > $2
462
463
464##################################################
465###  Ruleset 4 -- Final Output Post-rewriting  ###
466##################################################
467S4
468
469R$*<@>			$@ $1				handle <> and list:;
470
471# strip trailing dot off possibly canonical name
472R$* < @ $+ . > $*	$1 < @ $2 > $3
473
474# externalize local domain info
475R$* < $+ > $*		$1 $2 $3			defocus
476R@ $+ : @ $+ : $+	@ $1 , @ $2 : $3		<route-addr> canonical
477R@ $*			$@ @ $1				... and exit
478
479ifdef(`_NO_UUCP_', `dnl',
480`# UUCP must always be presented in old form
481R$+ @ $- . UUCP		$2!$1				u@h.UUCP => h!u')
482
483# delete duplicate local names
484R$+ % $=w @ $=w		$1 @ $j				u%host@host => u@host
485
486
487
488##############################################################
489###   Ruleset _SET_97_ -- recanonicalize and call ruleset zero   ###
490###		   (used for recursive calls)		   ###
491##############################################################
492
493S`'_SET_97_
494R$*			$: $>3 $1
495R$*			$@ $>0 $1
496
497
498######################################
499###   Ruleset 0 -- Parse Address   ###
500######################################
501
502S0
503
504R<@>			$#_LOCAL_ $: <@>		special case error msgs
505R$* : $* ;		$#error $@ USAGE $: "list:; syntax illegal for recipient addresses"
506R<@ $+>			$#error $@ USAGE $: "user address required"
507R$* <$* : $* > $*	$#error $@ USAGE $: "colon illegal in host name part"
508R$* < @ . > $*		$#error $@ USAGE $: "invalid host name"
509
510ifdef(`_MAILER_smtp_',
511`# handle numeric address spec
512R$* < @ [ $+ ] > $*	$: $>_SET_98_ $1 < @ [ $2 ] > $3	numeric internet spec
513R$* < @ [ $+ ] > $*	$#_SMTP_ $@ [$2] $: $1 < @ [$2] > $3	still numeric: send',
514	`dnl')
515
516# now delete the local info -- note $=O to find characters that cause forwarding
517R$* < @ > $*		$@ $>_SET_97_ $1		user@ => user
518R< @ $=w . > : $*	$@ $>_SET_97_ $2		@here:... -> ...
519R$* $=O $* < @ $=w . >	$@ $>_SET_97_ $1 $2 $3		...@here -> ...
520
521# handle local hacks
522R$*			$: $>_SET_98_ $1
523
524# short circuit local delivery so forwarded email works
525ifdef(`_LOCAL_NOT_STICKY_',
526`R$=L < @ $=w . >		$#_LOCAL_ $: @ $1			special local names
527R$+ < @ $=w . >		$#_LOCAL_ $: $1			dispose directly',
528`R$+ < @ $=w . >		$: $1 < @ $2 . @ $H >		first try hub
529ifdef(`_OLD_SENDMAIL_',
530`R$+ < $+ @ $-:$+ >	$# $3 $@ $4 $: $1 < $2 >	yep ....
531R$+ < $+ @ $+ >		$#relay $@ $3 $: $1 < $2 >	yep ....
532R$+ < $+ @ >		$#_LOCAL_ $: $1			nope, local address',
533`R$+ < $+ @ $+ >		$#_LOCAL_ $: $1			yep ....
534R$+ < $+ @ >		$#_LOCAL_ $: @ $1			nope, local address')')
535ifdef(`MAILER_TABLE',
536`
537# not local -- try mailer table lookup
538R$* <@ $+ > $*		$: < $2 > $1 < @ $2 > $3	extract host name
539R< $+ . > $*		$: < $1 > $2			strip trailing dot
540R< $+ > $*		$: < $(mailertable $1 $) > $2	lookup
541R< $- : $+ > $*		$# $1 $@ $2 $: $3		check -- resolved?
542R< $+ > $*		$: $>90 <$1> $2			try domain',
543`dnl')
544undivert(4)dnl
545
546ifdef(`_NO_UUCP_', `dnl',
547`# resolve remotely connected UUCP links (if any)
548ifdef(`_CLASS_V_',
549`R$* < @ $=V . UUCP . > $*		$: $>_SET_95_ < $V > $1 <@$2.UUCP.> $3',
550	`dnl')
551ifdef(`_CLASS_W_',
552`R$* < @ $=W . UUCP . > $*		$: $>_SET_95_ < $W > $1 <@$2.UUCP.> $3',
553	`dnl')
554ifdef(`_CLASS_X_',
555`R$* < @ $=X . UUCP . > $*		$: $>_SET_95_ < $X > $1 <@$2.UUCP.> $3',
556	`dnl')')
557
558# resolve fake top level domains by forwarding to other hosts
559ifdef(`BITNET_RELAY',
560`R$*<@$+.BITNET.>$*	$: $>_SET_95_ < $B > $1 <@$2.BITNET.> $3	user@host.BITNET',
561	`dnl')
562ifdef(`_MAILER_pop_',
563`R$+ < @ POP. >		$#pop $: $1			user@POP',
564	`dnl')
565ifdef(`_MAILER_fax_',
566`R$+ < @ $+ .FAX. >	$#fax $@ $2 $: $1		user@host.FAX',
567`ifdef(`FAX_RELAY',
568`R$*<@$+.FAX.>$*		$: $>_SET_95_ < $F > $1 <@$2.FAX.> $3	user@host.FAX',
569	`dnl')')
570
571ifdef(`UUCP_RELAY',
572`# forward non-local UUCP traffic to our UUCP relay
573R$*<@$*.UUCP.>$*		$: $>_SET_95_ < $Y > $1 <@$2.UUCP.> $3	uucp mail',
574`ifdef(`_MAILER_uucp_',
575`# forward other UUCP traffic straight to UUCP
576R$* < @ $+ .UUCP. > $*		$#uucp $@ $2 $: $1 < @ $2 .UUCP. > $3	user@host.UUCP',
577	`dnl')')
578ifdef(`_MAILER_usenet_', `
579# addresses sent to net.group.USENET will get forwarded to a newsgroup
580R$+ . USENET		$#usenet $: $1',
581	`dnl')
582
583ifdef(`_LOCAL_RULES_',
584`# figure out what should stay in our local mail system
585undivert(1)', `dnl')
586
587# pass names that still have a host to a smarthost (if defined)
588R$* < @ $* > $*		$: $>_SET_95_ < $S > $1 < @ $2 > $3	glue on smarthost name
589
590# deal with other remote names
591ifdef(`_MAILER_smtp_',
592`R$* < @$* > $*		$#_SMTP_ $@ $2 $: $1 < @ $2 > $3		user@host.domain',
593`R$* < @$* > $*		$#error $@NOHOST $: Unrecognized host name $2')
594
595ifdef(`_OLD_SENDMAIL_',
596`# forward remaining names to local relay, if any
597R$=L			$#_LOCAL_ $: $1			special local names
598R$+			$: $>_SET_95_ < $R > $1			try relay
599R$+			$: $>_SET_95_ < $H > $1			try hub
600R$+			$#_LOCAL_ $: $1			no relay or hub: local',
601
602`# if this is quoted, strip the quotes and try again
603R$+			$: $(dequote $1 $)		strip quotes
604R$+ $=O $+		$@ $>_SET_97_ $1 $2 $3			try again
605
606# handle locally delivered names
607R$=L			$#_LOCAL_ $: @ $1			special local names
608R$+			$#_LOCAL_ $: $1			regular local names
609
610###########################################################################
611###   Ruleset 5 -- special rewriting after aliases have been expanded   ###
612###		   (new sendmail only)					###
613###########################################################################
614
615S5
616
617# see if we have a relay or a hub
618R$+			$: < $R > $1			try relay
619R< > $+			$: < $H > $1			try hub
620R< > $+			$@ $1				nope, give up
621R< $- : $+ > $+		$: $>_SET_95_ < $1 : $2 > $3 < @ $2 >
622R< $+ > $+		$@ $>_SET_95_ < $1 > $2 < @ $1 >')
623ifdef(`MAILER_TABLE',
624`
625
626###################################################################
627###  Ruleset 90 -- try domain part of mailertable entry 	###
628###		   (new sendmail only)				###
629###################################################################
630
631S90
632R$* <$- . $+ > $*	$: $1$2 < $(mailertable .$3 $@ $1$2 $@ $2 $) > $4
633R$* <$- : $+ > $*	$# $2 $@ $3 $: $4		check -- resolved?
634R$* < . $+ > $*		$@ $>90 $1 . <$2> $3		no -- strip & try again
635R$* < $* > $*		$: < $(mailertable . $@ $1$2 $) > $3	try "."
636R<$- : $+ > $*		$# $1 $@ $2 $: $3		"." found?
637R< $* > $*		$@ $2				no mailertable match',
638`dnl')
639
640###################################################################
641###  Ruleset _SET_95_ -- canonify mailer:host syntax to triple	###
642###################################################################
643
644S`'_SET_95_
645R< > $*			$@ $1				strip off null relay
646R< $- : $+ > $*		$# $1 $@ $2 $: $3		try qualified mailer
647R< $=w > $*		$@ $2				delete local host
648R< $+ > $*		$#_RELAY_ $@ $1 $: $2		use unqualified mailer
649
650###################################################################
651###  Ruleset _SET_98_ -- local part of ruleset zero (can be null)	###
652###################################################################
653
654S`'_SET_98_
655undivert(3)dnl
656#
657######################################################################
658######################################################################
659#####
660`#####			MAILER DEFINITIONS'
661#####
662######################################################################
663######################################################################
664undivert(7)dnl
665