[Mimedefang] scanning outgoing mail

Steffen Kaiser skmimedefang at smail.inf.fh-bonn-rhein-sieg.de
Wed Oct 14 03:31:58 EDT 2009


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On Wed, 7 Oct 2009, Cliff Hayes wrote:

> May I trouble you for some hints on a direction to take.  Perhaps a link to

Hint: Program in Perl

> a walk-through?  I have searched the web and found nothing.  I have both

You've found this mailing list and its archive.

> spamassassin books and not a word.  I couldn't find a mimedefang book.

SpamAssassin is just a tool to score messages.
MIMEDefang glues the tool with the mail processing in a most flexible, 
because freely admin-programmable way.

Hence, think of a way to differ incoming and outgoing messages from each 
other - for instance by source IP range or whether or not the sender is 
authentificated or the %RecipientMailers hash in filter_begin()- and call 
the SpamAssassin, query the blacklists a.s.o. conditionally.

This is done by modifying the Perl code in /etc/mail/mimedefang-filter. 
There is no on/off configuration file.

BTW: If you scan messages on the submission host, to use SpamAssassin can 
slow down the message submission drastically, so that your users might 
become upset or assume something is wrong.

Bye,

- -- 
Steffen Kaiser
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