[Mailman-Users] Re: mail not being sent/received

[John Dennis]

jpsota at gmail.com wrote:
> Okay, here's some more potentially useful info. I sent a message to
> one of the user accounts and here's what I got back:
> 
> Technical details of temporary failure:
> TEMP_FAILURE: Could not initiate SMTP conversation with any hosts:
> [hostname.dyndns.org (1): Connection refused]
> 
> I think this echoes what I said about incoming mail not even reaching
> the server.

There are 2 likely problems:

1) Your firewall is not allow port 25 SMPT traffic, open the port up. 
This is the most likely.

2) Your MTA is only listening your local loopback, i.e. your own machine 
127.0.0.1, and not your machines IP address.

-- 
John Dennis <jdennis at redhat.com>