what are the NAT commands you are using? you want the DNAT and SNAT somthing like this: iptables -t nat -A PREROUTING -d 1.1.1.1 -j DNAT --to 10.10.10.10 Quoting Ranjith Kumar <ranjitbat@xxxxxxxxx>: > Hi All, > > I have a Windows server 2003 installed, infront of my mail server. The > windows server is connected to internet and this is acting as > relayhost to my Linux mail server. I enabled NAT on the windows > firewall and forwarding pop3 and imap ports to Linux machine. But I am > not able to access pop3 or imap from the internet. > > Do I need to add any commands to my iptables to accept the > natted/forwarded packets? > > Thanks & Regards > Ranjith Kumar. > Thanks - Nathan - http://www.linuxcare.ca
