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AArgh! Broken MUAs and bounce messages

From: Wietse Venema (wietseporcupine.org)
Date: Fri Dec 08 2006 - 09:31:34 CST


Apparently, some MUA software interprets Postfix bounce messages
as HTML, and therefore removes "<postmaster>" from the bounce
message text.

So when the user gets a Postfix < 2.3 "delayed mail" notification,
they don't see this:

    For further assistance, please send mail to <postmaster>

                            The Postfix program

Apparently, what they see is this:

    For further assistance, please send mail to

                            The Postfix program

This is based on one single report from a random stranger who asked
me for assistance with an email problem. The report could be wrong.

        Wieste