I get the following message in the event log on our exchange 2007 server;Event Type:ErrorEvent Source:MSExchangeISEvent Category:General Event ID:9646Date:6/22/2009Time:12:04:03 PMUser:N/AComputer:exchangeDescription:Mapi session "8af441ca-25d4-437c-86f8-350769f2f281" exceeded the maximum of 250 objects of type "objtMessage". What I'm trying to figure out is if the "8af441ca-25d4-437c-86f8-350769f2f281" is the user's objectGUID or is it the msExchMailboxGuid? Or is it neither?Thanks,D

hi,This issue occurs because of a limit on the number of items that clients can open. By default, this limit is set to 100 for attachments and 250 for messages. http://support.microsoft.com/kb/830836/en-usregards,Mumin CICEK | Exchange - MVP | www.cozumpark.com | www.mumincicek.com