Monitoring Exchange 2010 - imaps/pop3s alarms
hobbit at elyograg.org
Thu Nov 18 22:02:04 CET 2010
I have recently migrated from Exchange 2003 to Exchange 2010. Several
times a day, I get alarms for imaps and pop3s, which are resolved less
than a minute later.
The graph (http://www.elyograg.org/pop3s.png) shows hourly spikes in
reponse time. The alarms are not every hour, but when they do happen,
they correspond to the spikes. The email from xymon looks like this.
Note the "seconds" value, which is extremely low. Anytime there's an
alarm, the value is low like this.
Service pop3s on server.example.com is not OK : Service unavailable
There have been no complaints from people who use the service, and
believe me, I'd hear about it if there was a problem.
The non-SSL versions are not alarming. I just noticed that the graph
for pop3 has two entries - pop3 and pop3s. From what I can tell, it
checks TLS on the standard test. The pop3s graph on the pop3 entry
looks identical to the pop3s graph I've included here, except it's red
instead of blue.
I suspect that it's related to the throttling policies in Exchange 2010,
but I don't know what to change. I don't want to open the default
throttling policy way up, but I did change the anonymous connection
limit from 1 to 5. Has anyone else had this problem and found a way to
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