[Mailman-Users] List users get a 'rejected' error, but the messages are posted

[pod]

Hi,

I'm the webmaster of http://fisica.urbenalia.com, which is hosted in a 
cPanel based server, urbenalia.com. That control panel comes with 
mailman 2.1.2. I've a list called 'Canalfisica' (with internal name 
canalfisica_fisica.urbenalia.com).

Since a week ago, the list users get a rejected message (which I copy 
for you bellow), but the messages are posted correctly. This is strange 
because the rejection message comes from es.urbenalia.com (as you will 
see bellow) instead of fisica.urbenalia.com. The server's administrator 
said that es.urbenalia.com is the internal name of the server.

I looked at the mailman logs, but I didn't found the lines corresponding 
to the rejected messages. I wasn't able to found the answer in the 
documentation, nor in the faq. I think that this can't be a 
misconfiguration of the list, because it worked fine for two months and 
I didn't change anything.

The servers runs linux, kernel 2.4.20-20.7, with apache 1.3.28.

The rejection message that my users get, with the headers (I only have 
deleted the IP's of the private users), are like this:

***********************************************************************
Return-Path: <Mailman-bounces at es.urbenalia.com>
Received: from tsmtp5.mail.isp ([xxx.xxx.xxx.xxx]) by mb32.terra.es
           (terra.es) with ESMTP id HM1SQB01.EJF for
           <pod.mailing at terra.es>; Wed, 1 Oct 2003 00:20:35 +0200
Received: from es.urbenalia.com ([xxx.xxx.xxx.xxx]) by
           tsmtp5.mail.isp (terra.es) with ESMTP id HM1SQ500.ATZ for
           <pod.mailing at terra.es>; Wed, 1 Oct 2003 00:20:29 +0200
Received: from localhost ([127.0.0.1] helo=es.urbenalia.com)
	by es.urbenalia.com with esmtp (Exim 4.20)
	id 1A4Ss4-0000mI-6K
	for pod at fisica.urbenalia.com; Wed, 01 Oct 2003 00:21:28 +0200
Subject: JavaChat y Mensajes devueltos
From: Mailman-owner at es.urbenalia.com
To: pod at fisica.urbenalia.com
MIME-Version: 1.0
Content-Type: multipart/mixed; 
boundary="===============026969976932705197=="
Message-ID: <mailman.8.1064960462.28394.mailman at es.urbenalia.com>
Date: Wed, 01 Oct 2003 00:21:02 +0200
Precedence: bulk
X-BeenThere: Mailman at es.urbenalia.com
X-Mailman-Version: 2.1.2
List-Id: Mailman site list  <mailman.es.urbenalia.com>
X-List-Administrivia: yes
Sender: Mailman-bounces at es.urbenalia.com
Errors-To: Mailman-bounces at es.urbenalia.com
X-AntiAbuse: This header was added to track abuse, please include it 
with any abuse report
X-AntiAbuse: Primary Hostname - es.urbenalia.com
X-AntiAbuse: Original Domain - fisica.urbenalia.com
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - es.urbenalia.com

--===============026969976932705197==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit

You are not allowed to post to this mailing list, and your message has
been automatically rejected.  If you think that your messages are
being rejected in error, contact the mailing list owner at
Mailman-owner at es.urbenalia.com.

***********************************************************************

The original message was attached.

Thank you for your time,
Jaume (pod)