[CentOS] Using postfix in CentOS 6 to relay mails to First.Last at gmail.com

[Alexander Farber]

Thanks -

On Tue, Jan 15, 2013 at 2:10 PM, John Doe <jdmls at yahoo.com> wrote:
> Tried both MXs and none answered...
>
> $ telnet static.103.78.9.176.clients.your-server.de 25
> Trying 176.9.78.103...

I've opened the firewall for 176.9.78.103 only sofar...
(doing hosts one by one).

Is mayb postfix listening for local connections only
in the default CentOS 6 install? I see:

# netstat -an |grep -w 25
tcp        0      0 127.0.0.1:25                0.0.0.0:*
     LISTEN

Thanks
Alex