50 lines
1.5 KiB
Plaintext
50 lines
1.5 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 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(`@(#)bestmx_is_local.m4 8.14 (Berkeley) 1/25/1999')
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divert(-1)
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define(_BESTMX_IS_LOCAL_, _ARG_)
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LOCAL_CONFIG
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# turn on bestMX lookup table
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Kbestmx bestmx
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ifelse(_ARG_, `', `dnl',`
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# limit bestmx to these domains
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CB`'_ARG_')
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LOCAL_NET_CONFIG
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# If we are the best MX for a site, then we want to accept
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# its mail as local. We assume we've already weeded out mail to
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# UUCP sites which are connected to us, which should also have
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# listed us as their best MX.
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#
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# Warning: this may generate a lot of extra DNS traffic -- a
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# lower cost method is to list all the expected best MX hosts
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# in $=w. This should be fine (and easier to administer) for
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# low to medium traffic hosts. If you use the limited bestmx
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# by passing in a set of possible domains it will improve things.
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ifelse(_ARG_, `', `dnl
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# unlimited bestmx
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R$* < @ $* > $* $: $1 < @ $2 @@ $(bestmx $2 $) > $3',
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`dnl
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# limit bestmx to $=B
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R$* < @ $* $=B . > $* $: $1 < @ $2 $3 . @@ $(bestmx $2 $3 . $) > $4')
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R$* $=O $* < @ $* @@ $=w . > $* $@ $>97 $1 $2 $3
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R< @ $* @@ $=w . > : $* $@ $>97 $3
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R$* < @ $* @@ $=w . > $* $#local $: $1
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R$* < @ $* @@ $* > $* $: $1 < @ $2 > $4
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