Integration SpamAssassin with Postfix This file contains information on how to integrate SpamAssassin with Postfix for incoming mails. 1. Set SpamAssassin to start after booting the system Edit /etc/defaults/spamassassin and set SpamAssassin to start after a reboot. 2. Start SpamAssassin /etc/init.d/spamassassin start 3. Create a filter user. adduser --disabled-password --disabled-login --gecos "Postfix Filter User" filter 4. Create the filter script. Under ~filter, create filter.sh: #!/bin/sh /bin/cat | /usr/bin/spamc -f | /usr/sbin/sendmail -i "$@" exit $? Be sure to chmod it to 750, at least. A more complete example can be found under /usr/share/doc/spamassassin/examples 5. Set /etc/postfix/master.cf It must contain the following lines: localhost:smtp inet n - - - - smtpd :smtp inet n - - - - smtpd -o content_filter=filter: [...] filter unix - n n - - pipe flags=Rq user=filter argv=/home/filter/filter.sh -f ${sender} -- ${recipient} 6. Reload postfix As root, exec: #> postfix reload That should be it. Aug 2003, Jesus Climent