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$Id: pop3filter.txt,v 1.1 2005/03/11 21:16:03 jonz Exp $
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Please follow the instructions in the README for building DSPAM. Once DSPAM
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has been built, the following instructions may be used to integrate it with
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pop3filter is an open-source POP3 proxy tool which can be used to provide
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spam filtering without the need for inbound mail server integration. The
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software is configured to run as a "proxy"; that is, users are directed to
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check their email using the proxy's ip address (or are transparently
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redirected there) at which point the proxy will open up a connection to
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the mail server and filter mail as it is being downloaded by the user.
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pop3filter can be downloaded from http://pop3filter.sourceforge.net/.
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The easiest way to set up pop3filter is to have it call DSPAM using the
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--stdout command, at which point DSPAM will check the message and return
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it with X-DSPAM headers identifying the message as spam or innocent. To
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do this, follow these steps:
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1. Compile and install pop3filter
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2. Compile and install DSPAM on the same machine
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You may optionally wish to the spamSubject and spamAction=tag preferences
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so that a tag will be prepended to the subject header of messages
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3. Configure pop3filter to run as follows:
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pop3filter --fork [mail server IP] 110 110 "/usr/local/bin/dspam --user \
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\$POP3_USERNAME --stdout --deliver=innocent,spam "
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a full blown example would look like:
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pop3filter --fork 10.0.0.1 110 110 "/usr/local/bin/dspam --user \
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\$POP3_USERNAME --stdout --deliver=innocent,spam"
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The POP3_USERNAME variable will be automatically replaced with the username
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provided by the client at connect time.
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Mail will then be checked by DSPAM and an X-DSPAM-Result field will be
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appended to the message headers identifying the classification of the
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doc/pop3filter.txt
