date and time created 95/01/26 10:52:12 by eric

SCCS-vsn: usr.sbin/sendmail/cf/feature/bestmx_is_local.m4 8.1

diff --git a/usr/src/usr.sbin/sendmail/cf/feature/bestmx_is_local.m4 b/usr/src/usr.sbin/sendmail/cf/feature/bestmx_is_local.m4
new file mode 100644 (file)
index 0000000..e374d7c
--- /dev/null
+++ b/usr/src/usr.sbin/sendmail/cf/feature/bestmx_is_local.m4
@@ -0,0 +1,31 @@
+divert(-1)
+#
+# Copyright (c) 1983 Eric P. Allman
+# Copyright (c) 1988, 1993
+#      The Regents of the University of California.  All rights reserved.
+#
+# %sccs.include.redist.sh%
+#
+
+divert(0)
+VERSIONID(`@(#)bestmx_is_local.m4      8.1 (Berkeley) %G%')
+divert(-1)
+
+LOCAL_CONFIG
+Kbestmx bestmx
+
+LOCAL_NET_CONFIG
+
+# If we are the best MX for a site, then we want to accept
+# its mail as local.  We assume we've already weeded out mail to
+# UUCP sites which are connected to us, which should also have
+# listed us as their best MX.
+#
+# Warning: this may generate a lot of extra DNS traffic -- a
+# lower cost method is to list all the expected best MX hosts
+# in $=w.  This should be fine (and easier to administer) for
+# low to medium traffic hosts.
+
+R$* < @ $* > $*                        $: $1 < @ $2 @@ $(bestmx $2 $) > $3
+R$* < @ $* @@ $=w . > $*       $#local $: $1
+R$* < @ $* @@ $* > $*          $: $1 < @ $2 > $4