#!/bin/sh
#
# SA-only.sh
#
# Simple filter to plug SpamAssassin only
# into the Postfix MTA
#
# From http://advosys.ca/papers/postfix-filtering.html
# Advosys Consulting Inc., Ottawa
#
# For use with:
#    Postfix 20010228 or later
#    SpamAssassin 2.42 or later
#
# Note: Modify the file locations to match your particular 
#       server 

# File locations: 
# (CHANGE AS REQUIRED TO MATCH YOUR SERVER)
SENDMAIL="/usr/lib/sendmail -i"
SPAMASSASSIN=/usr/bin/spamassassin

# Exit codes from <sysexits.h>
EX_TEMPFAIL=75
EX_UNAVAILABLE=69

cat | $SPAMASSASSIN -x | $SENDMAIL "$@" || \
   { echo Message content rejected; exit $EX_UNAVAILABLE; }

exit 0