Fwd: Kolab 16 on debian 8 - dirsrv connection failed

The some problem has raised after a long time soon after the last
components update.

On a Debian 8 fully patched there is a kolab system working for a year
with little problems.
The worst is guam.
I had to restart it every 24 hours to solve its continuous crash errors.

Now every two or three days dirsrv stops, without any messages, simply
all other components got a connection refused message.

Restarting the dirsrv service doesn't solve the problem anymore.
The only message I can find is:
Detected Disorderly Shutdown last time
Directory Server was running, recovering database

The only workaround at the moment is:
stop every service in the system, one at the time.
At the stop dirsrv and restart the whole server.

I can't find any useful message anywhere.

Ideas? I need to quickly solve or find a better workaround.

Thanks in advance

-------- Messaggio Inoltrato --------
Oggetto: Kolab 16 on debian dirsrv vanishes every 30 min
Data: Tue, 8 May 2018 11:18:00 +0200
Mittente: Gelpi Andrea <[email protected]>
A: [email protected] <[email protected]>

Hi,
	On a debian 8 I installed a Kolab 16.

Yesterday I started using in with 30 users an we discovered that after
about 30 min 389 dirsrv stop working.

I have to:

systemctl restart [email protected]

And in error log I notice:

08/May/2018:11:03:19 +0200] - 389-Directory/1.3.3.5 B2015.068.854
starting up
[08/May/2018:11:03:19 +0200] - Detected Disorderly Shutdown last time
Directory Server was running, recovering database.
[08/May/2018:11:03:20 +0200] - slapd started.  Listening on All
Interfaces port 389 for LDAP requests

I cannot find any error in any log.

Where have I to look, and what can I do to debug?

-- 
Gelpi ing. Andrea
--------------------------------------------------------------
It took the computing power of three C-64s to fly to the Moon.
It takes a 486 to run Windows 95. Something is wrong here.
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-- 
Gelpi ing. Andrea
--------------------------------------------------------------
It took the computing power of three C-64s to fly to the Moon.
It takes a 486 to run Windows 95. Something is wrong here.
--------------------------------------------------------------