...[spammer uses a valid address]...

> So what? Spam is spam. If you were to discard it, you would also
> discard valid email of that particular sender.
> He would never know that his mail was sent to the bitbucket:
> Rejecting the mail ist the way to go!

In our case we're having a virtual entry "foodomain.com", the spammer
was delivering the mail through the MX host (our provider) for this
domain. So modifying /etc/postfix/access for the host was not possible.

The spammer also used this address as From-address, so rejecting (as I
did) bounces the mail back to the MX host and there the bounce was
coming back to us.

Think the following way:
Spammer delivers through MX the following mail
-----------------------
MAIL FROM: Ralf.Hildebrandtinnominate.com
RCPT TO: Ralf.Hildebrandtinnominate.com
DATA
From: Ralf.Hildebrandtinnominate.com
To: Ralf.Hildebrandtinnominate.com
Subject: Double-bounce

wasted time and space
.
-----------------------
What is the correct way to reject such a mail without getting the
bounce?

I've "delivered" this problem to our provider (discard every mail,
coming from "foodomain.com" and going to "foodomain.com").

best regards,
Andy (using Postfix since a few months)

PS: Removing this "foodomain.com" was not a valid way, because the
address was in printed marketing material.

--
******************************************************************
Andreas Kisslinger        SOC Software Outsourcing Consulting GmbH
Tel.:  +49.89/864913-41   Henschelstr. 3
Fax:   +49.89/864913-86   D-81249 Muenchen
                          Germany
mailto:Andreas.Kisslingersoc-de.com
******************************************************************

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