flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=foo argv=/usr/local/sbin/bsmtp -f $sender $nexthop $recipient
+procmail unix - n n - 20 pipe
+flags=R user=cyrus argv=/usr/bin/procmail -r SENDER=${sender} -t -m USER=${user} EXTENSION=${extension} /etc/procmailrc