Trying to figure out how to snat smtp traffic to strip out natted source ip can anyone help. I dont know if this is possible since my antipam program is putting this in the header but what I would like is my mail server to send its own ip 66.224.62.104. You can look at the header of this email and see the natted address of my machine. Thanks Mike #INTERFACE SUBNET ADDRESS PROTO PORT(S) IPSEC eth0 $ETH2_IP 66.224.62.118 eth2 66.224.62.118 $ETH2_IP eth0 eth1 66.224.62.118 eth2 eth1 $ETH2_IP #eth0 eth1 66.224.62.104 tcp smtp--------------------------I tried a few varitions here no joy! interfaces #ZONE INTERFACE BROADCAST OPTIONS net eth0 detect norfc1918,nosmurfs,tcpflags,nosmurfs net eth2 detect dhcp,norfc1918,nosmurfs,tcpflags,nosmurfs,routefilter,arp_ignore=1 loc eth1 detect dhcp dmz eth3 detect routefilter vpn tun0 ipvpn proxy arp #ADDRESS INTERFACE EXTERNAL HAVEROUTE PERSISTENT 66.224.62.103 eth3 eth0 yes ----web,sql server only 66.224.62.104 eth3 eth0 yes ----mail server only [root@ns5 ~]# netstat -r Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 172.16.2.1 * 255.255.255.255 UH 0 0 0 tun0 ws1.lanlinecomp * 255.255.255.255 UH 0 0 0 eth3 mail.lanlinecom * 255.255.255.255 UH 0 0 0 eth3 66.224.62.96 * 255.255.255.224 U 0 0 0 eth0 172.30.0.0 * 255.255.255.0 U 0 0 0 eth3 10.194.79.0 * 255.255.255.0 U 0 0 0 eth1 10.19.227.0 172.16.2.1 255.255.255.0 UG 0 0 0 tun0 24.19.166.0 * 255.255.254.0 U 0 0 0 eth2 169.254.0.0 * 255.255.0.0 U 0 0 0 eth3 default c-24-19-166-1.h 0.0.0.0 UG 0 0 0 eth2 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net''s Techsay panel and you''ll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV