Mail server with port-blocking ISP (Was: Re: Looking for classes and advice)

[David Bendit]

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On Feb 25, 2007, at 9:44 PM, der.hans wrote:

> Set up and
> run your own mail server and web server. Learn how to keep your own
> firewall secure and how to subnet your network for servers on one  
> side and
> desktops on the other. If you only have two boxes, setup virtual
> interfaces and pretend :). If you only have one box, setup virtual
> interfaces and pretend even more.

Actually, I've been wondering about this for a while, and I've never  
found a way to do it. Is there a way to run a mail server on a  
standard account (non-business) with a port-blocking ISP? I'm going  
through Cox, and they block all the fun ports (80, 25, and a bunch  
more). I've even been able to set up postfix before, but only for  
intra-network mail. To get mail out, I had to use a relayhost, and  
the only way I could find to get mail in always involved a forwarder.  
However, with the forwarder, most spam blocking measures  
(greylisting, RBLs, etc.) were rendered useless. If you guys can  
offer any tips, that'd be great.

Thanks,
David
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