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An alternative is to use the smtp-vilter high-performance content filter using the sendmail milter API which has a backend for Spamassassins spamd. More details at http://www.etc.msys.ch/software/smtp-vilter/

Integrated into Postfix

The easiest way to integrate postfix and spamassassin is to use spamd. First, edit master.cf, find the smtp line and just add "-o content_filter=spamassassin" to the end of the line.

Then, go to the end of the file, and add this:

spamassassin unix - n n - - pipe user=nobody argv=/path/to/spamc -f -e /path/to/postfix/sendmail -oi -f ${sender} ${recipient}

Then, setup spamd to start with the system, and you are ready to go. If you wish to provide spamassassin preferences, change "user=nobody" to a valid system user, and add .spamassassin into their home directory.

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This is just a summary of the following websites. Go there for more detailed information.

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