[Avcheck] Sender address revriting for avcheck reports

[Wojciech Wieckowski]

Hi

I know that my problem isn't strictly related to avcheck but with this
excellent solution I lost possibility to notify external clients about
viruses in their messages.

Is it possible to force postfix to set valid for my domain sender address as
Return-Path?
I know that it breaks RFC1123 (5.3.3) rquirements, but this is the only way
to send such notifications by my provider's relayhost.
Unfortunately their SMTP server rejects messages with empty MAIL FROM:<>
fields.
I'm affraid that I'm not in position to force them to redefine their
security policies. In fact in my case using external relay host isn't
mandatory, but very comfortable.
I thinked also about conditional using of relayhost on the basis of sender's
address, but if I good understood transport_maps provide this functionality
only for recipient hosts/domains.

My SMTP session example:

220 uucp.my.provider ESMTP rw-NORELAY2; Sat, 24 Nov 2001 14:29:09 +0100
EHLO mailserver.my.domain
250-uucp.my.provider Hello IDENT:postfix@mailserver.my.domain
[123.123.123.123], pleased to meet you
250-8BITMIME
250-SIZE 20000000
250-DSN
250-ONEX
250-ETRN
250-XUSR
250 HELP
MAIL FROM:<> SIZE=3121
RCPT TO: <recipient@other.domain>
522 <recipient@other.domain>... ACCESS DENIED Relay restricted
RSET
QUIT

----

Avcheck administrator notification:

>From MAILER-DAEMON  Sat Nov 24 15:28:46 2001
Return-Path: <>
Delivered-To: virusmaster@my.domain
Received: from localhost (localhost.localdomain [127.0.0.1])
        by mailserver.my.domain (Postfix) with SMTP id 6D01814C8D2
        for <virusmaster>; Sat, 24 Nov 2001 15:28:46 +0100 (CET)
From: Antivirus-Daemon@my.domain
To: virusmaster@my.domain

Subject: Administrator Virus-alert (sender: virus_sender@my.domain)
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
        boundary=avcheck-adm-7485-20011124152846@mailserver.my.domain
Message-Id: 20011124142846.6D01814C8D2@mailserver.my.domain
Date: Sat, 24 Nov 2001 15:28:46 +0100 (CET)

This is a multi-part message in MIME format.
<...>
his is a mail anti-virus program at host mailserver.my.domain.

The mail system received a message from virus_sender@my.domain
destined to
<recipient@other.domain>
that contains either infected or suspicious file(s)
<...>

Thanks in advance for any help.
--
Wojtek