bad msg causes infinite growth in router

[David Trueman <david@cs.dal.ca>]

Can anyone suggest a patch to 2.99.49p9 to stop this message from causing
the router to grow without bound:

external
rcvdfrom mx01.globecomm.net ([207.51.48.8]:56028 "EHLO mx01.globecomm.net" ident: "NO-IDENT-SERVICE")
with ESMTP
identinfo NO-IDENT-SERVICE
from <"<>"@mx04.netaddress.usa.net>
todsn ORCPT=rfc822;mohd@ug.cs.dal.ca
to <mohd@ug.cs.dal.ca>
env-end
Received: from mx04.netaddress.usa.net (realmx04.netaddress.usa.net [204.68.24.13]) by mx01.globecomm.net (8.8.8/8.8.0) with SMTP id JAA00078 for <fadi@lords.com>; Mon, 9 Mar 1998 09:16:38 -0500 (EST)
Received: (qmail 6490 invoked by uid 0); 9 Mar 1998 14:21:27 -0000
Date: 9 Mar 1998 14:21:27 -0000
Message-ID: <19980309142127.6489.qmail@mx04.netaddress.usa.net>
Received: from 208.255.112.176 (208.255.112.176) by mx04.netaddress.usa.net via mtad (2.4) 
	id mx04-ccioVL0323; Mon, 09 Mar 1998 07:21:23 -0600 (MST)
Subject:  
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Content-Transfer-Encoding: 7bit





  David Trueman,
    Systems Manager, Dalhousie Faculty of Computer Science
    Technical Chair, Chebucto Community Net