Based on the older version of this article here: http://support.microsoft.com/kb/2009942 I created the ParameterSystem Subkey, with the Maximun Polling Frequency key and set the Decimal value to 45000. This was to mitigate the delay issues in Outlook 2003. Ever since then I receive this error message in my event viewer. Event 9646, MSExchangeIS Mapi session "13fbc88b-c9fc-4b9c-9efd-14de7957eee4: /o=MYDOMAIN/ou=First Administrative Group/cn=Recipients/cn=MYUSER" exceeded the maximum of 32 objects of type "session". Another user get this: Mapi session "2e5673f1-a3bd-4d56-b988-03c1267012b2: /o=MYDOMAIN/ou=First Administrative Group/cn=Recipients/cn=MYUSER" exceeded the maximum of 250 objects of type "objtMessage". I have received about 6 of these. I'm not saying this started as a result of me creating the subkey...Microsoft would have to confirm that. I'm just saying that this is when I started to notice it. My system specs are: Exchange 2010 SP1 Enterprise - Update Roll Up 2 Windows Server 2008 R2 - All updated up until December 12, 2010. Any ideas? Treadstone

Please post on Exchange 2010 forum. ThanksYousuf Ali | Microsoft Community Contributor Award 2011

Will doTreadstone