adding a reject reason to spam messages

[Kai Schaetzl]

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Erick Perez wrote on         Tue, 6 Dec 2005 23:28:39 -0500:

> Well, if a legitimate user is sending a mail from an ip block that has been 
> tagged as spam-generating (like an open-proxy that was later closed), i 
> wanted to tell the user that his/her email was rejected/tagged as spam 
> because it appeared in a spam/openproxy database.

That is already done if you added the RBL to your MTA configuration with the 
syntax recommended by the RBL.
If you do this on MTA level it's ok, because you bounce it right of to the 
spammer who will probably not forward it to the real destination. However, if 
you reject it with Mailscanner after accepting you send it off to the innocent 
joejob victim. Which is not acceptable. And if it's not coming from a spammer 
the MTA bounce will go right to the "good" sender and tell them the reason 
already.

Kai

-- 
Kai Schätzl, Berlin, Germany
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