Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: Notesfiles $Revision: 1.7.0.8 $; site uiucdcsb
Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!ihnp4!inuxc!pur-ee!uiucdcsb!essick
From: essick@uiucdcsb.Uiuc.ARPA
Newsgroups: net.mail
Subject: a common sendmail.cf bug
Message-ID: <9600010@uiucdcsb>
Date: Thu, 5-Sep-85 18:36:00 EDT
Article-I.D.: uiucdcsb.9600010
Posted: Thu Sep  5 18:36:00 1985
Date-Received: Sat, 7-Sep-85 13:47:50 EDT
Lines: 27
Nf-ID: #N:uiucdcsb:9600010:000:833
Nf-From: uiucdcsb.Uiuc.ARPA!essick    Sep  5 17:36:00 1985


Here's a bug that is probably in most people's sendmail.cf.  It
involves turning user%host into user@host.

The stock berkeley ruleset 3 has the line:

R$+%$+			$@$>6$1<@$2>			user%host

Which works fine for "user%host" but doesn't work so well when
the address is something like "user%host%host2". It hands
back "user@host%host2" instead of "user%host@host2".  I prefer
to use the following 3 rules to handle the multiple-% case.

R$+%$+			$:$1<@$2>			user%host
R$+<@$+%$+>		$1%$2<@$3>			fix user%host%host2
R$+<@$+>		$@$>6$1<@$2>			get outta here

A quick way to find out if your configuration does this correctly
is to try:

	% /usr/lib/sendmail -bt
	> 0 user%this%that%other

and see what that gives you when ruleset 3 returns.

-- Ray Essick, University of Illinois
-- essick@uiuc.arpa,  {ihnp4, convex, philabs}!uiucdcs!essick