Mail to nowhere

[Steve Matzura]

On Tue, 16 Jun 2015 22:02:29 +0200, you wrote:

>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.

Well, it isn't. In fact, there is no exim process running. However,
something calling itself 'master' has port 25 open according to
netstat, and that process has a subprocess running something called
qmgr. I'd give more information, such as path to these programs, but
it isn't shown.
Time to check my Postfix config a little more closely.