New Bes Express server is on Windows 2008 R2. We are currently in the transition from Exchange 2010 SP 1 from Exchange 2003. The besadmin account is on the new exchange 2010 server, most of the users are still on exchange 2003. It definitely seems like it is a "too many connections" issue of some sort. I have verified the throttling policy is set correctly with all of the right attributes being unlimited. If I stop all of the BES Services and run IEMSTest, The mailbox opens successfully (don't receive the OpenMsgStore Failed)
Here are the IEMSTest results:
First, when BES Services are Running:
Code:
Test User: Opening message store using
/o=Corp1/ou=First Administrative Group/cn=Recipients/cn=test.user
/o=Corp1/ou=First Administrative Group/cn=Configuration/cn=Servers/cn=FN-EX1/cn=Microsoft Private MDB
Test User: OpenMsgStore failed (8004011d)
Test User: CDO Server Name: FN-EX1
Test User: CDO Mailbox DN: /o=Corp1/ou=First Administrative Group/cn=Recipients/cn=test.user
Test User: CDO logon successful
Test User: CDO COM exception: Code = 80040705, WCode = 0505, Code meaning = IDispatch error #1285
Description = The attempt to log on to the Microsoft Exchange Server computer has failed. [Microsoft Exchange Server
Information Store - [MAPI_E_FAILONEPROVIDER(8004011D)]].
Test User: CDO test failed
Test User: Active Directory permissions test completed successfully
Test User: Initializing EWS Proxy... successful
Test User: Configuring User... failed
And here when BES Services are not Running
Code:
Test User: Opening message store using
/o=Corp1/ou=First Administrative Group/cn=Recipients/cn=test.user
/o=Corp1/ou=First Administrative Group/cn=Configuration/cn=Servers/cn=FN-EX1/cn=Microsoft Private MDB
Test User: Mailbox opened successfully
Test User: Root Folder opened successfully
Test User: Folder created successfully
Test User: Test folder deleted successfully
Test User: MAPI test completed successfully
Test User: CDO Server Name: FN-EX1
Test User: CDO Mailbox DN: /o=Corp1/ou=First Administrative Group/cn=Recipients/cn=test.user
Test User: CDO logon successful
Test User: CDO COM exception: Code = 80040705, WCode = 0505, Code meaning = IDispatch error #1285
Description = The attempt to log on to the Microsoft Exchange Server computer has failed. [Microsoft Exchange Server
Information Store - [MAPI_E_FAILONEPROVIDER(8004011D)]].
Test User: CDO test failed
Test User: Active Directory permissions test completed successfully
Test User: Initializing EWS Proxy... successful
Test User: Configuring User... failed
Looking into that CDO COM exception now