[Cialug] Cannot retrieve mail through internal nework

[Chris Van Cleve]

I initially wasn't running a firewall at all, and the problem  
existed. I setup iptables to allow only ports 25 and 110 and the  
problem persisted. Sorry, I forgot to mention that the first time  
around. Unless Ubuntu has some other firewall running by default that  
I am unaware of. Very possible.

Chris VC

On Jun 30, 2006, at 11:40 AM, Stuart Thiessen wrote:

> What about the firewall settings?
>
> Stuart
> Stuart Thiessen
> Pass It On Services
>
> Sent from my BlackBerry® wireless device
>
> -----Original Message-----
> From: Chris Van Cleve <vanish at dreamscapevisionery.com>
> Date: Fri, 30 Jun 2006 11:38:32
> To:Central Iowa Linux Users Group <cialug at cialug.org>
> Subject: [Cialug] Cannot retrieve mail through internal nework
>
> I decided to rebuild an old 1.2 GHz P4 box as a linux server to host
> my family web site and email. Since I was in an adventurous mood, I
> installed Ubuntu to try it out. (Love it, btw. Finally a usable
> Debian. ;) ) I am having two problems with it though, one of which
> I'm hoping the Linux Geniuses here can help me figure out.
>
> The box is running Postfix because I'm used to it, and I think it's
> the best mail server. It's working flawlessly. My router is
> configured to forward ports 25 and 110 to that box. Using Webmin, I
> am able to send an receive email just fine. Everything sounds good,
> right? Here's the catch:
>
> I have 4 other PCs on my home network, all of which are configured to
> use my home domain for email. None of these machines, through various
> clients, is able to connect to the Ubuntu box. I am getting denial
> messages for port 110 and port 25 when trying to receive/send mail
> respectively. I thought at first it was a resolution problem (and
> spent a good chunk of time playing with host files), but all 4 PCs
> correctly reach the box's webmin interface using the domain name.
>
> Any ideas?
>
> Chris VC
>
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