# delete stale relay IPs
rm -f /var/spool/popauth/*

cp /dev/null /etc/tcp/tcp.smtp.filter

mv -f /etc/tcp/tcp.smtp.cdb /etc/tcp/tcp.smtp.cdb.old
cat /etc/tcp/tcp.smtp | /usr/local/bin/tcprules /etc/tcp/tcp.smtp.cdb /etc/tcp/tcp.smtp.cdb.$$