Sanitize 'Undelivered Mail Returned to Sender'

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Sanitize 'Undelivered Mail Returned to Sender'
\ tw2006 (15 May 2007)
. \ Noel Jones (15 May 2007)

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Subject:	Sanitize 'Undelivered Mail Returned to Sender'
Group:	Postfix-users
From:	tw2006
Date:	15 May 2007

Hi all,
i'm implementig postfix with amavis/spamassasin/clamav and it works
fine but i need to remove some information in "Undelivered mail" reply
or in "Delivery Status Notification" reply
Infact, if i try to send a mail from an external user to a non
existent user of my domain i receive a "Undelivered Mail" information
with a lot of information of my internal networks and of my postfix
server

From the exaple that you can see below i need to remove or change with
other text:

In
<xxx1.yyy>: host 192.168.1.2[192.168.1.2] said: 550
xxx1.yyy... No such user (in reply to RCPT TO
command)

i need to change with something like:
<xxx1.yyy>: host mailer.sitgroup.it[1.2.3.4] said: 550
xxx1.yyy... No such user (in reply to RCPT TO
command)

In
X-Virus-Scanned: by amavisd-new-2.4.5 (20070130) (Debian) at example.com

change with
X-Virus-Scanned: by amavisd at example.com

Remove
Remote-MTA: dns; 192.168.1.2

Change all 127.0.0.1 with 1.2.3.4
Remove all Debian text

Thanks to all and sorry for this big email/request

Regards
Riccardo

------------------------------

Reply Example:

Delivered-To: xxx.yyy
Received: by 10.114.241.15 with SMTP id o15cs551544wah;
Tue, 15 May 2007 01:20:00 -0700 (PDT)
Received: by 10.67.28.2 with SMTP id f2mr5785138ugj.1179217199800;
Tue, 15 May 2007 01:19:59 -0700 (PDT)
Return-Path: <>
Received: from mailer.example.com ([1.2.3.4])
by mx.google.com with ESMTP id l40si12535785ugc.2007.05.15.01.19.58;
Tue, 15 May 2007 01:19:59 -0700 (PDT)
Received-SPF: neutral (google.com: 1.2.3.4 is neither permitted nor
denied by best guess record for domain of mailer.example.com)
Received: by mailer.example.com (Postfix)
id 82E3E58C079; Tue, 15 May 2007 10:19:55 +0200 (CEST)
Date: Tue, 15 May 2007 10:19:55 +0200 (CEST)
From: MAILER-DAEMON (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
To: xxx.yyy
Auto-Submitted: auto-replied
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="45C0E58C074.1179217195/mailer.example.com"
Message-Id: <20070515081955.82E3E58C079>

This is a MIME-encapsulated message.

--45C0E58C074.1179217195/mailer.example.com
Content-Description: Notification
Content-Type: text/plain; charset=us-ascii

This is the Mail System at host mailer.example.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

The Mail System program

<xxx1.yyy>: host 192.168.1.2[192.168.1.2] said: 550
xxx1.yyy... No such user (in reply to RCPT TO
command)

--45C0E58C074.1179217195/mailer.example.com
Content-Description: Delivery report
Content-Type: message/delivery-status

Reporting-MTA: dns; mailer.example.com
X-Postfix-Queue-ID: 45C0E58C074
X-Postfix-Sender: rfc822; xxx.yyy
Arrival-Date: Tue, 15 May 2007 10:19:55 +0200 (CEST)

Final-Recipient: rfc822; xxx1.yyy
Original-Recipient: rfc822;xxx1.yyy
Action: failed
Status: 5.0.0
Remote-MTA: dns; 192.168.1.2
Diagnostic-Code: smtp; 550 xxx1.yyy... No such user

--45C0E58C074.1179217195/mailer.example.com
Content-Description: Undelivered Message
Content-Type: message/rfc822

Received: from localhost (localhost [127.0.0.1])
by mailer.example.com (Postfix) with ESMTP id 45C0E58C074
for <xxx1.yyy>; Tue, 15 May 2007 10:19:55 +0200 (CEST)
X-Virus-Scanned: by amavisd-new-2.4.5 (20070130) (Debian) at example.com
Received: from mailer.example.com ([127.0.0.1])
by localhost (mailer.example.com [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id rbr9H2j7LWHe for <xxx1.yyy>;
Tue, 15 May 2007 10:19:54 +0200 (CEST)
Subject: