* Stan Hoeppner <s...@hardwarefreak.com>:

> ad4f0.5040...@roessner-net.com is a message-ID, not an email address.

Here it is used as an email-address

> Then they send spam to that message-ID thinking it's an email address.
> The RHS is correct, so your Postfix server initially accepts it.

And that's the problem. Why?

> You're apparently relaying to a content filter before doing recipient
> address verification.

As you can see from his postconf -n, he IS doing recipient address
verification

-- 
Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
  Charité - Universitätsmedizin Berlin
  Campus Benjamin Franklin
  Hindenburgdamm 30 | D-12203 Berlin
  Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
  ralf.hildebra...@charite.de | http://www.charite.de
            

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