Re: [Exim] Rejecting bounce messages with multiple recipient…

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Author: Matthew Byng-Maddick
Date:  
To: exim-users
Subject: Re: [Exim] Rejecting bounce messages with multiple recipients
On Tue, Oct 08, 2002 at 12:17:39PM +0200, Sebastien J. Gross wrote:
> In an other way there are also MTUs such as lotus notes thsat sends
> Mailer-Daemon with an really invalid address:
>         Return-path: <HOSTNAME/DOMAIN/TLD@???>


In what way do you believe this to be a ``really invalid address''. It
looks fine to me. The fact that it's a delivery error and isn't using
a NULL sender is obviously wrong, but OTOH, if when you try to bounce
to it it does return a NULL sender bounce, then it's OK. The reason for
using a NULL sender is to avoid mailloops. It obviously causes one more
message than necessary, but you will still avoid mailloops, so you are
still compliant.

I always remember that:
`#!/bin/sh'@??? is a valid (unquoted) address, and then I can
work out a lot of the allowed characters in a local-part.

MBM

--
Matthew Byng-Maddick         <mbm@???>           http://colondot.net/