Writeup of a large filtering service using qpsmtpd

[Steve Kemp]

  This document might be interesting to other users
 of qpsmtpd:

    http://book.mail-scanning.com/

  It describes how I implemented and managed the setup of a
 qpsmtpd-based filtering service which rejected about 10 million
 messages a month at the peak.

  (Since the service described has gone away I'll update the
 wiki links for the few plugins which were hosted there.)

Steve
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