Hi Rob, Pascal, Anisha: I am sorry for not presenting the complete picture earlier. (Recap) 192.168.1.6/255.255.255.0 (static) on eth0 192.168.0.0/24 by DHCP on eth1 I need to have mail to/from 192.168.0.10 from 192.168.1.0/24 network. I forgot to mention that mail is already setup on 192.168.1.6 using ports 25/110 . Will it work to proxy on say 25000/11000 by using "-m mport -p tcp --sports 25000,11000" in addition to the --dports 25,110? Nandan
