postfix+dovecot+bitrixvm

25/tcp  open  smtp
110/tcp open  pop3
143/tcp open  imap
465/tcp open  smtps
587/tcp open  submission
993/tcp open  imaps
995/tcp open  pop3s

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
-A bx_public -p tcp -m state --state NEW -m tcp --dport 8070 -m comment --comment "BX: requests for pool update" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 80 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 443 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 8890 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 8891 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 8893 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 8894 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 5222 -m comment --comment "BX: web ports" -j ACCEPT
-A bx_public -p tcp -m state --state NEW -m tcp --dport 5223 -m comment --comment "BX: web ports" -j ACCEPT