Thank you Gordon! After a quick tcpdump. Monit sends:
EHLO localhost QUIT Idézem/Quoting Gordon Messmer <gordon.mess...@gmail.com>: > On 12/28/2016 11:02 AM, SZÉPE Viktor wrote: >> Could it be that Courier unbinds from localhost when eth0 is down? > > > If Monit is testing SMTP on localhost, there are a bunch of possible > causes of failure. The most likely, I would think, is that DNS is not > available so one of the SMTP commands issued by Monit fails. > > Check the mail logs for errors at the time the test fails. You're likely > to find the answer there. > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > courier-users mailing list > courier-users@lists.sourceforge.net > Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users SZÉPE Viktor https://github.com/szepeviktor/debian-server-tools/blob/master/CV.md -- +36-20-4242498 s...@szepe.net skype: szepe.viktor Budapest, III. kerület ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users