bestmx_is_local.m4 revision 64562
138032Speterdivert(-1) 238032Speter# 364562Sgshapiro# Copyright (c) 1998, 1999 Sendmail, Inc. and its suppliers. 464562Sgshapiro# All rights reserved. 538032Speter# Copyright (c) 1983 Eric P. Allman. All rights reserved. 638032Speter# Copyright (c) 1988, 1993 738032Speter# The Regents of the University of California. All rights reserved. 838032Speter# 938032Speter# By using this file, you agree to the terms and conditions set 1038032Speter# forth in the LICENSE file which can be found at the top level of 1138032Speter# the sendmail distribution. 1238032Speter# 1338032Speter# 1438032Speter 1538032Speterdivert(0) 1664562SgshapiroVERSIONID(`$Id: bestmx_is_local.m4,v 8.24 1999/10/18 21:50:24 ca Exp $') 1738032Speterdivert(-1) 1838032Speter 1942575Speterdefine(_BESTMX_IS_LOCAL_, _ARG_) 2042575Speter 2138032SpeterLOCAL_CONFIG 2238032Speter# turn on bestMX lookup table 2338032SpeterKbestmx bestmx 2464562Sgshapiroifelse(defn(`_ARG_'), `', `dnl',` 2538032Speter# limit bestmx to these domains 2638032SpeterCB`'_ARG_') 2738032Speter 2838032SpeterLOCAL_NET_CONFIG 2938032Speter 3038032Speter# If we are the best MX for a site, then we want to accept 3138032Speter# its mail as local. We assume we've already weeded out mail to 3238032Speter# UUCP sites which are connected to us, which should also have 3338032Speter# listed us as their best MX. 3438032Speter# 3538032Speter# Warning: this may generate a lot of extra DNS traffic -- a 3638032Speter# lower cost method is to list all the expected best MX hosts 3738032Speter# in $=w. This should be fine (and easier to administer) for 3838032Speter# low to medium traffic hosts. If you use the limited bestmx 3938032Speter# by passing in a set of possible domains it will improve things. 4038032Speter 4164562Sgshapiroifelse(defn(`_ARG_'), `', `dnl 4238032Speter# unlimited bestmx 4338032SpeterR$* < @ $* > $* $: $1 < @ $2 @@ $(bestmx $2 $) > $3', 4438032Speter`dnl 4538032Speter# limit bestmx to $=B 4638032SpeterR$* < @ $* $=B . > $* $: $1 < @ $2 $3 . @@ $(bestmx $2 $3 . $) > $4') 4764562SgshapiroR$* $=O $* < @ $* @@ $=w . > $* $@ $>Recurse $1 $2 $3 4864562SgshapiroR< @ $* @@ $=w . > : $* $@ $>Recurse $3 4964562Sgshapirodnl we cannot use _LOCAL_ here since it is defined too late 5064562SgshapiroR$* < @ $* @@ $=w . > $* $@ $>CanonLocal < $1 > 5138032SpeterR$* < @ $* @@ $* > $* $: $1 < @ $2 > $4 52