Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!bagate!dsinc!unix.cis.pitt.edu!csfst1
From: csfst1@unix.cis.pitt.edu (Charles S. Fuller)
Newsgroups: comp.sys.sgi
Subject: Re: sendmail.cf rewrite errors
Summary: try this ...
Keywords: sendmail
Message-ID: <74055@unix.cis.pitt.edu>
Date: 28 Dec 90 14:18:51 GMT
References: <1990Dec27.061027.20702@sgitokyo.nsg.sgi.com>
Reply-To: fuller@nye.nscee.edu
Organization: Univ. of Pittsburgh, Computing & Information Services
Lines: 41

In article <1990Dec27.061027.20702@sgitokyo.nsg.sgi.com>, kandall@sgitokyo.nsg.sgi.com (Michael Kandall) writes:
  
> Out-going mail seems to work fine.  In-coming domain-addressed
> mail generates the following errors to SYSLOG:
> 
> 	Dec 27 02:24:12 sgitokyo sendmail[19465]: AA19465: 
> 		SYSERR: rewrite: expansion too long
> 	Dec 27 02:24:12 sgitokyo sendmail[19465]: Unparseable user 
> 		nuucp wants to be a.b.c.d!senders_name
> 
> Mail is sent to the postmaster (me) with the following header errors
> enclosed.
> 
>        ----- Transcript of session follows -----
>     554 rewrite: expansion too long

A little while ago, there was some discussion on the net about a bug in
sendmail.cf that resulted in infinite recursion in address parsing
("expansion too long").  Here's an excerpt from the article:

In article <9010260415.aa21334@VGR.BRL.MIL> FL17@DLRVMBS.BITNET (Ralf
Beyer) wrote:

+ regarding the IRIX 3.3.1 sendmail.cf problem not being able to send
+ mail to any other host ("rewrite: expansion too long") there is a bug
+ in the sendmail.cf file (infinite recursion in address parsing). The line
+ 
+ #to unknown host or domain--if we are not a forwarder, send to the forwarder
+ R$~F!$-!$*<@$+>$*		$@$>29<@$F>:$3@$4$5
+ 
+ should read
+ 
+ #to unknown host or domain--if we are not a forwarder, send to the forwarder
+ R$~F!$-!$*<@$+>$*		$@<@$F>:$3@$4$5
+ 
+ with the "$>29" removed. After this correction all our current mail troubles
+ are gone.

Hope this helps.  Indeed, it did solve similar problems for me.

Chuck Fuller