114 lines
3.4 KiB
Plaintext
114 lines
3.4 KiB
Plaintext
divert(-1)
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#
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# Copyright (c) 1998 Sendmail, Inc. All rights reserved.
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# Copyright (c) 1983, 1995 Eric P. Allman. All rights reserved.
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# Copyright (c) 1988, 1993
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# The Regents of the University of California. All rights reserved.
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#
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# By using this file, you agree to the terms and conditions set
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# forth in the LICENSE file which can be found at the top level of
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# the sendmail distribution.
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#
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#
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divert(0)
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VERSIONID(`@(#)nullrelay.m4 8.19 (Berkeley) 5/19/1998')
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#
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# This configuration applies only to relay-only hosts. They send
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# all mail to a hub without consideration of the address syntax
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# or semantics, except for adding the hub qualification to the
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# addresses.
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#
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# This is based on a prototype done by Bryan Costales of ICSI.
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#
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######################################################################
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######################################################################
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#####
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##### REWRITING RULES
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#####
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######################################################################
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######################################################################
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###########################################
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### Rulset 3 -- Name Canonicalization ###
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###########################################
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S3
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# handle null input
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R$@ $@ <@>
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# strip group: syntax (not inside angle brackets!) and trailing semicolon
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R$* $: $1 <@> mark addresses
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R$* < $* > $* <@> $: $1 < $2 > $3 unmark <addr>
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R$* :: $* <@> $: $1 :: $2 unmark node::addr
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R:`include': $* <@> $: :`include': $1 unmark :`include':...
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R$* : $* <@> $: $2 strip colon if marked
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R$* <@> $: $1 unmark
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R$* ; $1 strip trailing semi
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R$* < $* ; > $1 < $2 > bogus bracketed semi
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# null input now results from list:; syntax
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R$@ $@ :; <@>
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# basic textual canonicalization -- note RFC733 heuristic here
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R$* $: < $1 > housekeeping <>
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R$+ < $* > < $2 > strip excess on left
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R< $* > $+ < $1 > strip excess on right
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R<> $@ < @ > MAIL FROM:<> case
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R< $+ > $: $1 remove housekeeping <>
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ifdef(`_NO_CANONIFY_', `dnl',
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`# eliminate local host if present
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R@ $=w $=: $+ $@ @ $M $2 $3 @thishost ...
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R@ $+ $@ @ $1 @somewhere ...
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R$=E @ $=w $@ $1 @ $2 leave exposed
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R$+ @ $=w $@ $1 @ $M ...@thishost
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R$+ @ $+ $@ $1 @ $2 ...@somewhere
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R$=w ! $=E $@ $2 @ $1 leave exposed
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R$=w ! $+ $@ $2 @ $M thishost!...
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R$+ ! $+ $@ $1 ! $2 @ $M somewhere ! ...
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R$=E % $=w $@ $1 @ $2 leave exposed
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R$+ % $=w $@ $1 @ $M ...%thishost
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R$+ % $+ $@ $1 @ $2 ...%somewhere
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R$=E $@ $1 @ $j leave exposed
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R$+ $@ $1 @ $M unadorned user')
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######################################
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### Ruleset 0 -- Parse Address ###
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######################################
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S0
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R$*:;<@> $#error $@ USAGE $: "List:; syntax illegal for recipient addresses"
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# pass everything else to a relay host
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R$* $#_RELAY_ $@ $H $: $1
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##################################################
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### Ruleset 4 -- Final Output Post-rewriting ###
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##################################################
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S4
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R$* <@> $@ handle <> and list:;
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# strip trailing dot off before passing to nullclient relay
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R$* @ $+ . $1 @ $2
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#
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######################################################################
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######################################################################
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#####
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`##### MAILER DEFINITIONS'
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#####
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######################################################################
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######################################################################
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undivert(7)dnl
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