I could probably test that theory. Unfortunately, these users all access apps via Citrix, so cached mode isn't an option.

- Sean



On Nov 18, 2009, at 11:22 PM, Steven Peck <[email protected]> wrote:

See what happens if you force them to cached mode.  The CRM app may or
may not work at that point.  If it does and it hammers the locally
cached data, then you reduce IO n the Exchange server.

On Wed, Nov 18, 2009 at 10:55 PM, Sean Martin <[email protected]> wrote:
Thanks. That is what I used to identify the suspect users causing abnormal
MAPI operations. I don't have the details in front of me, but a large
majority of them were flagged as failed MAPI Find Row operations.

I have a feeling CRM may have something to do with it as that is the only
commonality between the users identified.

- Sean

On Wed, Nov 18, 2009 at 1:40 PM, Steven Peck <[email protected]> wrote:

exmon can help with user identification.

http://technet.microsoft.com/en-us/library/bb508855(EXCHG.65).aspx

http://www.msexchange.org/tutorials/Microsoft-Exchange-Server-User-Monitor.html

Xobni should be ok as long as the user is in cached mode.


On Tue, Nov 17, 2009 at 11:56 AM, Sean Martin <[email protected] >
wrote:
I tracked down a similar issue to users that had installed Xobni without permission. Those instances were causing MAPI session errors ( exceeded
the
maximum of 500 objects of type "objtFolder" ). Didn't take long to get
that
app uninstalled.

Still trying to track down the cause of other users with unusual RPC
activity. It's a never ending battle!

- Sean

On Tue, Nov 17, 2009 at 8:58 AM, mqcarp <[email protected]> wrote:

Does anyone allow this tool on their network? I have some serious RPC
latency going on and I think it is from these users. I am running
Exmon now to review it but wanted to see if anyone has seen this
before.

EXCH03








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