Tim Wilson wrote:
> 
> Hey everyone,
> 
> I've got a box that has a number of virtual hosts doing a bunch of different
> things. When I installed Debian Linux originally, I set the computer's
> hostname to 'homer' after everyone's favorite doughnut-eating symbol of
> Americana.
> 
> I discovered just today that postfix isn't getting any outgoing email
> through to domains other than our own. Here's a typical entry from
> /var/log/mail.log
> 
> Sep 27 12:40:11 homer postfix/smtp[13172]: 1A2622124: to=<wilson at visi.com>,
> relay=none, delay=120, status=deferred (connect to
> visi.com.mail8.psmtp.com[64.18.5.10]: Connection timed out)
> 
> It occurred to me that I don't have a valid external DNS entry for homer and
> that might be the reason for the problem. I tried switching the computer's
> hostname to one of the several ones assigned to this system that do resolve.
> I changed /etc/hostname and the entry in /etc/postfix/main.cf, but as you
> can see from the log, postfix is still showing 'homer' as the hostname. I
> also restarted postfix and the networking system on this server. Logging in
> at the console shows the new hostname in the prompt.
> 
> Any suggestions? I'm not sure what the next step would be.
> 
> -Tim
> 

Grep for "homer" in /etc.  Chances are, you missed changing some config file.

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