1 pass in proto tcp from any to any port = 25 flags S/SA keep frags
2 block in proto tcp from any to any port = 25 flags S/SA keep frags
3 pass in proto udp from any to any port = 53 keep frags
4 block in proto udp from any to any port = 53 keep frags
5 pass in proto tcp from any to any port = 25 flags S/SA keep state keep frags
6 block in proto tcp from any to any port = 25 flags S/SA keep state keep frags
7 pass in proto udp from any to any port = 53 keep frags(strict)
8 pass in proto tcp from any to any port = 25 keep state(strict)
9 pass in proto tcp from any to any port = 25 keep state(loose)