136 lines
4.8 KiB
Plaintext
136 lines
4.8 KiB
Plaintext
divert(-1)
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#
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# Copyright (c) 1983, 1995 Eric P. Allman
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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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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the University of
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# California, Berkeley and its contributors.
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# 4. Neither the name of the University nor the names of its contributors
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# may be used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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divert(0)
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VERSIONID(`@(#)nullrelay.m4 8.13 (Berkeley) 4/30/97')
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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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