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Old 01-16-2008, 10:54 AM   #1 (permalink)
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Default Mapi session error on MSExchangeIS

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Hi

My Windows 2003 server keep receiving this error in the event viewer

Mapi session "/o=EXCHANGESERVER/ou=first administrative group/cn=Recipients/cn=BESadmin" exceeded the maximum of 500 objects of type "objtFolder".
Is this related to blackberry user that may have too many inbox subfolders?

Event ID 9646

Please advise how I resolve.

Thanks
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Old 01-16-2008, 11:34 AM   #2 (permalink)
rsk
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if this is a windows 2003 sp2 server you will probably want to disable TCP Chimney.

You Had Me At EHLO... : Windows 2003 Scalable Networking pack and its possible effects on Exchange
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Old 01-17-2008, 10:06 AM   #3 (permalink)
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Quote:
Originally Posted by ihateBES View Post
Hi

My Windows 2003 server keep receiving this error in the event viewer

Mapi session "/o=EXCHANGESERVER/ou=first administrative group/cn=Recipients/cn=BESadmin" exceeded the maximum of 500 objects of type "objtFolder".
Is this related to blackberry user that may have too many inbox subfolders?

Event ID 9646

Please advise how I resolve.

Thanks
Note the exact article but have a read of this and it should explain:

Maximum open folder objects per logon has been changed

Try creating a Decimal DWORD of, say, 1000 here:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\MSExchangeIS\ParametersSystem\MaxObjsPerMapiSes sion\objtFolder

I have just tried that on mine and will restart the IS tonight to see if it works.
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Old 01-18-2008, 01:11 PM   #4 (permalink)
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Quote:
I have just tried that on mine and will restart the IS tonight to see if it works.
Did adding that key work? Tried it on mine, and check monday for result.
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Old 03-18-2008, 06:06 PM   #5 (permalink)
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Default Same error

I'm seeing the same error on our Exchange Server, Chimney is turned off on all of our exchange servers and we'd rather not globally increase the maximum open folder objects. Does anyone know a way around this?
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Old 03-18-2008, 08:30 PM   #6 (permalink)
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I can see two ways around it:

1. Increate the maximum number of open folder objects.
2. Add another Exchange server to handle the load better.
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Old 03-19-2008, 12:15 PM   #7 (permalink)
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@lordshwa: have a read of this MS article: Your Exchange Server 2003 computer may stop responding after a MAPI client opens more than the default value of certain server objects

it explains a little better what is going on here, these limits were added to Exchange to prevent a single client from eating up all the resources on the Exchange server, so they should be adjusted with caution.

It's not a server load issue so adding more Exchange servers isn't going to do anything.
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