Iptables rule for SMTP on NAT
 

Hi all,
Does anyone know how to make iptables rules for SMTP for the NAT ?Cause http://cbl.abuseat.org/ always block my NAT's IP, it said that my IP was spamming . I already check all my clients packages with iftop and also MRTG. There is nothing wrong with my clients. But I noticed that they sent messages massively,using group lists(group@blabla.net) sometimes constantly. I already added rules like this to my iptables :

-A FORWARD -d xx.xx.xx.xx -p tcp --dport 25 -j ACCEPT
-A FORWARD -s xx.xx.xx.xx -p tcp --dport 25 -j ACCEPT
-A FORWARD -p tcp --dport 25 -j DROP

Im tryin to force my clients thru smtp ports, so that site wont block my NAT's IP.
Will you help me configure iptables for the NAT??

Regards

while I don't quite understand your post completely... if you have 2 nics setup, one outside, one inside... here's the actual command I would use to forward to the smtp server on the localside...

iptables -t nat -A PREROUTING -p tcp --dport 25 -j DNAT --to 192.168.0.100

change that ip address to whatever computer is running your smtp server.......

All I want that my NAT's IP wont be block anymore by the http://cbl.abuseat.org/.
Coz everytime my clients send mails (using mailing group), it always block my IP.
anyway I'll try it
Thanks for your reply

Regards

If that domain is blocking mail coming from you or people in your network, you have to email the people at that domain...

well, until now its working fine
i always monitoring with iftop, to see whats going on..
ill report if something going on

Regards