Proxy and POP Problems
 

Hi

I have installed a new Red Hat proxy server and am having troubles getting it to alow clients to connect to the POP mail server (external). The clients respond with error messages stating that they cannot find the email server.

I have IP tables setup on the proxy, which is handling the security.

Does anyone know the rule i have to set to allow POP and SMTP to be passed through?

Thanks

What proxy server are you using?
Not many are POP/SMTP proxies, just http...

I am using Squid for the proxy. The internet comes through the router into Eth1, it then connects to the LAN via Eth0 on the Red Hat compter. I am having trouble with local machines resolving the the external POP server. I was wondering if it was a IP Tables problem more then a Proxy Problem.

I plan to setup today either a PostFix POP server or a Courier IMAP server to host the main internally. This will go on a seperate linux server. Any thoughts on which way to go? Is it hard to backup an IMAP server? The reason I am changing to one of these is that our M$ Exchange server corrupted its dataabse and we lost all our emails from the past few years. The backup failed to make things worse!!!!

Thanks for your help

Squid is a Web proxy, not a proxy for anything else, see http://www.squid-cache.org/
The point of Squid isn't really to provide internet access to multiple clients - though it can. The point is mainly to cache web pages locally to make the Web experience faster. You say you're using iptables for security - you probably also need to be using it for NAT. Please see:
http://tldp.org/HOWTO/Masquerading-S...O/summary.html
to get started on that.

cheers.