Hi,

I recently had some monit alerts on a server when I updated to the
latest dovecot version 2.2.13 (no such problem with 2.2.9).


The monit config lines are these:
check host milch-mailserver with address milch.schokokeks.org
   if failed host milch.schokokeks.org port 993 type tcpssl sslauto
protocol imap for 5 cycles then alert

I get 
[CEST Jun 15 16:59:20] debug    : 'milch-mailserver' succeeded
connecting to INET[milch.schokokeks.org:993] via TCPSSL [CEST Jun 15
16:59:20] error    : 'milch-mailserver' failed protocol test [IMAP] at
INET[milch.schokokeks.org:993] via TCPSSL -- IMAP: error receiving data
-- Success

It seems dovecot itself is up and running, this seems to be a monit
problem to me. The configuration line above is the example from the
monit wiki, so it should work.

This only happens for the ssl-ports. If anyone needs to do tests on our
server milch.schokokeks.org feel free to do so (but I may decide to go
back to the older dovecot version when I can't resolve this issue soon).

Dovecot 2.2.13 introduces some new protection against DoS-attacks on
SSL [1], I assume it may have something to do with that.

Any help apprechiated.


[1]
http://news.softpedia.com/news/IMAP-Server-Dovecot-2-2-13-Brings-a-Fix-for-a-Potential-DoS-Attack-Issue-441771.shtml

cu,
-- 
Hanno Böck
http://hboeck.de/

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