[Mailman-Users] infinite loop on bounce from postmaster to list

[Rich Ramos]

After some digging I think I have found out that we are running into bug "[ 
#231776 ] Digest From address causing mail loop", however ours has some 
twists that I don't think the suggestion in the bug database will fix.

Also, I have some unanswered questions from this bug:
1. Why doesn't the parameter 'LIKELY_BOUNCE_SENDERS' prevent this situation 
from happening at all?  The MTA sending the email is coming from this 
address: "From: Mail Administrator <postmaster at bellsouth.net>"
Do I not understand this parameter correctly?

2. In the situation that is described in the bug report, why don't the 
headers 'Sender:' & 'Errors-To:' get used?  What are these headers suppose 
to be used for?

On top of those questions, in our situation I don't know if just changing 
the 'From' address will help.  The ccMail system that I refered to in my 
last email, changes the From address and replaces it with the Reply-to 
address (which it completely drops).  Which is why the bounce snowball was 
sent to all users on the dist list because it got changed from 
<list>-request to just <list>.  So we would have wound up in the same 
situation even if the From address was <list>-owner.  Ugly.

I have included the headers as the get changed by the ccMail system for 
digest emails.  The list is test and the domain is chi.mti.com

Normal:
Received: from becks (localhost [127.0.0.1])
	by becks.chi.mti.com (8.8.8/8.8.8) with ESMTP id UAA17934;
	Tue, 31 Jul 2001 20:16:02 -0500 (CDT)
Date: Tue, 31 Jul 2001 20:16:02 -0500 (CDT)
Message-Id: <200108010116.UAA17934 at becks.chi.mti.com>
From: test-request at chi.mti.com
Subject: Test digest, Vol 1 #5 - 5 msgs
Reply-to: test at chi.mti.com
X-Mailer: Mailman v2.0.3
MIME-version: 1.0
Content-type: text/plain
To: test at chi.mti.com
Sender: test-admin at chi.mti.com
Errors-To: test-admin at chi.mti.com
X-BeenThere: test at chi.mti.com
X-Mailman-Version: 2.0.3
Precedence: bulk
List-Help: <mailto:test-request at chi.mti.com?subject=help>
List-Post: <mailto:test at chi.mti.com>
List-Subscribe: <http://chi.mti.com/mailman/listinfo/test>,
	<mailto:test-request at chi.mti.com?subject=subscribe>
List-Id: <test.chi.mti.com>
List-Unsubscribe: <http://chi.mti.com/mailman/listinfo/test>,
	<mailto:test-request at chi.mti.com?subject=unsubscribe>
List-Archive: <http://chi.mti.com/mailman/private/test/>


ccMail:
Received: from bud.chi.mti.com (root at bud [192.107.118.17])
	by becks.chi.mti.com (8.8.8/8.8.8) with ESMTP id UAA17958
	for <Ramos at chi.mti.com>; Tue, 31 Jul 2001 20:16:14 -0500 (CDT)
Received: from mtigate.mti.com (mtigate.mti.com [144.86.1.1])
	by bud.chi.mti.com (8.9.3/8.9.3) with ESMTP id UAA18194
	for <Ramos at chi.mti.com>; Tue, 31 Jul 2001 20:16:13 -0500
From: test at chi.mti.com
Received: from ccmgate.mti.com (ccmgate.mti.com [144.86.14.157])
	by mtigate.mti.com (Build 101 8.9.3/NT-8.9.3) with SMTP id SAA28830
	for <Ramos at chi.mti.com>; Tue, 31 Jul 2001 18:16:05 -0700
Received: from POP3 Client by ccmgate.mti.com (ccMail Link to SMTP 
R8.30.00.7)
    id AA996628767; Tue, 31 Jul 2001 18:19:29 -0700
Message-Id: <0107319966.AA996628767 at ccmgate.mti.com>
X-Mailer: ccMail Link to SMTP R8.30.00.7
Date: Tue, 31 Jul 2001 20:16:02 -0700
To: <test at chi.mti.com>
Subject: Test digest, Vol 1 #5 - 5 msgs
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="simple boundary"