How do I configure a filter for running SpamAssassin?
If you want to use SpamAssassin directly, instead of using the plugin, you can get the SpamAssassin headers added to each message, and/or tag the subject line of spam messages. First, you have to set up SpamAssassin correctly, which is beyond the scope of this FAQ. This example uses the spamc/spamd client server model, but it could easily be adapted for calling SpamAssassin directly. First, save this script somewhere in your PATH (eg $HOME/bin/sc-spamc).