Hi folks, I have 2 ISP Inet connections. 1 Inet I (eth0) use have used for everything (SMTP server, MASQ for local network) I got the 2 INET (eth1) and made some changes: They both have MASQ: iptables -t nat -A POSTROUTING -o $EXTERNAL_INTERFACE_2 -j MASQUERADE (2 Inet) iptables -t nat -A POSTROUTING -o $EXTERNAL_INTERFACE_1 -j MASQUERADE (1 Inet) I changed default route to eth1 and put some additional route: ip route rep default via ext_ip2 dev eth1 ip route add 1.2.3.4 via ext_ip1 (eth0) And now I''m having a problem with my email server (Lotus Notes on Linux). It can send emails via SMTP but cannot use encrypted Lotus connection and receive emails as well. iptables -t nat -A PREROUTING -i $EXTERNAL_INTERFACE_1 -p tcp -d $EXTERNALIP_1 --dport 25 \ -j DNAT --to-destination 1.2.3.196:25 # Lotus Notes Encrypted connection (tcp 1352) port forward from eth0 to internal ip 10.105.105.196 iptables -t nat -A PREROUTING -i $EXTERNAL_INTERFACE_1 -p tcp -d $EXTERNALIP_1 --dport 1352 \ -j DNAT --to-destination 1.2.3.196:1352 And how to route with ip route command that email server have to use not the default route (eth1) but eth0. What I need to configure more to get working back my email server? Thank you in advance Rimas