Our domain is sun.ac.za

We relay email for a few other domains including prg.wcape.school.za.
A user with the address [EMAIL PROTECTED] complains that email
sent to her from outside does not reach her.

An example was an email she sent to herself from a yahoo account - at
test message CC'd to me.

When I opened the email, the headers looked like this:

==================
Received: from mail2bb.sun.ac.za ([146.232.128.59] helo=mail2.sun.ac.za)
        by burger.sun.ac.za with esmtp (Exim 4.63)
        (envelope-from <[EMAIL PROTECTED]>)
        id 1HAQjb-0001Jv-QY
        for [EMAIL PROTECTED]; Fri, 26 Jan 2007 15:03:15 +0200
Received: from web28014.mail.ukl.yahoo.com ([217.146.182.119])
        by mail2.sun.ac.za with smtp (Exim 4.50)
        id 1HAQjX-0001xY-U0
        for [EMAIL PROTECTED]; Fri, 26 Jan 2007 15:03:15 +0200
Received: (qmail 90987 invoked by uid 60001); 26 Jan 2007 13:02:41 -0000
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws;
  s=s1024; d=yahoo.co.uk;

h=Message-ID:X-YMail-OSG:Received:Date:From:Subject:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding;

b=vUvde5kgRWt7EjdG5++kwRhuiIEl0wRQkCcHAcBPz2/Tf0S8Mkw3j+geB0toPVcMD7guWQbjok6udfzYehkKNCPC1urNbaA+1mAP+3/JmQuNTppdi7dvU7OC2MrfENa72s+g11gad5SawQeoaQMBoEg1aUWqzg3x+lhs1P0Z4xc=
  ;
Message-ID: <[EMAIL PROTECTED]>
X-YMail-OSG: 
oVEf_94VM1mVYf6NJ3YKiLAwh.rEfaDCrxmJ5vtOu1olfesJov33uHLXMpMTcTixtQ--
Received: from [196.208.103.85] by web28014.mail.ukl.yahoo.com via HTTP; Fri, 
26 Jan 2007 13:02:41
GMT
Date: Fri, 26 Jan 2007 13:02:41 +0000 (GMT)
From: Melissa Langley <[EMAIL PROTECTED]>
Subject: Test Message for Estelle
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
==============================

However in the mainlog on mail2.sun.ac.za I found this:

=================

2007-01-26 15:03:15 1HAQjX-0001xZ-UO <= [EMAIL PROTECTED] 
H=web28014.mail.ukl.yahoo.com [217.146.182.119] P=smtp S=2902 [EMAIL PROTECTED]
2007-01-26 15:03:15 1HAQjX-0001xZ-UO => [EMAIL PROTECTED] <[EMAIL PROTECTED]> 
R=relayrouter T=remote_smtp H=stbbh.stb.sun.ac.za [146.232.20.30]
2007-01-26 15:03:15 1HAQjX-0001xZ-UO Completed

2007-01-26 15:03:15 1HAQjX-0001xY-U0 <= [EMAIL PROTECTED] 
H=web28014.mail.ukl.yahoo.com [217.146.182.119] P=smtp S=2901 [EMAIL PROTECTED]
2007-01-26 15:03:15 1HAQjX-0001xY-U0 => [EMAIL PROTECTED] <[EMAIL PROTECTED]> 
R=dnslookup_relay_to_domains T=remote_smtp H=burger.sun.ac.za [146.232.128.30]
2007-01-26 15:03:15 1HAQjX-0001xY-U0 Completed

=================

I then ran 'exim4 -d-all+acl+rewrite+route -bhc 217.146.182.119' using
"mail from: [EMAIL PROTECTED]" and "rcpt to:
[EMAIL PROTECTED]" and the output showed that it would be
deliverd to prg.wcape.schoo.za as it is supposed to be.

Now my question.  If the log shows that the message was addressed to
[EMAIL PROTECTED] <[EMAIL PROTECTED]> while the "To:"-field
in the message showed [EMAIL PROTECTED], how could this
happen?

If it is a configuration error on our server, how can I determine where
what went wrong?  Several -bh tests revealed nothing.

Regards
Johann
-- 
Johann Spies          Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch

     "Wash me thoroughly from mine iniquity, and cleanse me 
      from my sin. For I acknowledge my transgressions; and 
      my sin is ever before me. Against thee, thee only, 
      have I sinned, and done this evil in thy sight..."
                                   Psalms 51:2-4 

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