Mail to nowhere

[Felix Zielcke]

Am Dienstag, den 16.06.2015, 11:44 -0400 schrieb Steve Matzura:
> The next phase of my testing procedure involves the simple act of
> delivering mail to my test box. When I send a message to either a
> valid or relayed user at my remote machine's address, it never gets
> there. I know this virtually for sure because I'm tailing
> /var/log/maillog and nothing new has been added for the past hour. 
> I'm
> thinking eventually my ISP will send the message back to me as
> undeliverable, and in that bounced message there may be some
> information about why it was undeliverable, but maybe someone has a
> thought as to why I'm not even seeing anything attempt to connect?

Receiving and Sending Mail is done by the MTA like postfix or exim.
Not Dovecot. It's just for the IMAP/POP access by the users to get the
mails.
So look at that logs. And if there's nothing in it, then make sure port
25 is actually open by the postfix/exim process.