From e09256cbd2ffa5475f6e7547a9ee0a603cd89dae Mon Sep 17 00:00:00 2001
From: Eric Allman <eric@ucbvax.Berkeley.EDU>
Date: Thu, 26 Jan 1995 18:52:12 -0800
Subject: [PATCH] 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
---
 .../sendmail/cf/feature/bestmx_is_local.m4    | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 usr/src/usr.sbin/sendmail/cf/feature/bestmx_is_local.m4

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
index 0000000000..e374d7c4dd
--- /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
-- 
2.20.1