On Wed, 2016-12-28 at 20:02 +0100, SZÉPE Viktor wrote:
> Good evening!
> 
> I am investigating a strange monitoring phenomenon.
> localhost (lo interface) is monitored on port 25 with a program
> called Monit.
> Monit generates a very small SMTP communication.
> Usually it is OK.
> 
> When the Internet-facing interface (eth0) is down - for some reason  
> but not DHCP - the test fails.
> 
> Of course couriertcpd binds on 127.0.0.1 only as "ADDRESS=127.0.0.1"
> 
> Could it be that Courier unbinds from localhost when eth0 is down?
> Thanks.

I also use Monit, although not to monitor the status of lo. I would
look, for the source of this phenomenon, to the configuration stanza in
/etc/monit/monitrc (or one of the config subfolders of /etc/monit).

-- 
Lindsay Haisley       | "UNIX is user-friendly, it just
FMP Computer Services |       chooses its friends."
512-259-1190          |          -- Andreas Bogk
http://www.fmp.com    |


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