[Cialug] Cannot retrieve mail through internal nework

Tom Pohl tom at tcpconsulting.com
Fri Jun 30 12:46:16 CDT 2006


Are you trying to connect to the server on the internal IP address or  
the real-world IP?  If it's the real-world IP, it might be a  
limitation of your router and you need to configure the other clients  
to use the inside IP!

-Tom

On Jun 30, 2006, at 11:38 AM, Chris Van Cleve wrote:

> 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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