problem sending/recieving mails

[Andrew Haley]

On 11/02/2010 10:14 AM, maina at linuxmail.org wrote:

> I ave setup a Fedora server as LAN gateway and also as a transparent 
> proxy server but all client "passing through" that server are enable to 
> send or receive mails.
> 
> The mail server is hosted on the same LAN running mdaemon, both servers 
> are on private IP block(192.168.0.0/24). Am using cisco router to do 
> port forwading for mailserver(25,110,143) ports.
> 
> If i eliminate Fedora box and direct traffic from LAN to cisco router 
> everything works.
> 
> My question is why is it when i use Fedora box as LAN gateway clients 
> are unable to send/receive mails? I ave done nating on that box.

Start simple.  Does telnet mailserver 25 from the clients work?

Andrew.