1*57718be8SEnji Cooperpass in proto tcp from any to any port = 25 flags S/SA keep frags 2*57718be8SEnji Cooperblock in proto tcp from any to any port = 25 flags S/SA keep frags 3*57718be8SEnji Cooperpass in proto udp from any to any port = 53 keep frags 4*57718be8SEnji Cooperblock in proto udp from any to any port = 53 keep frags 5*57718be8SEnji Cooperpass in proto tcp from any to any port = 25 flags S/SA keep state keep frags 6*57718be8SEnji Cooperblock in proto tcp from any to any port = 25 flags S/SA keep state keep frags 7*57718be8SEnji Cooperpass in proto udp from any to any port = 53 keep frags(strict) 8*57718be8SEnji Cooperpass in proto tcp from any to any port = 25 keep state(strict) 9*57718be8SEnji Cooperpass in proto tcp from any to any port = 25 keep state(loose) 10