Outlook Anywhere not working for some users

Hi All,

I am having a strange issue today with a customer - Outlook Anywhere has been enabled on their Exchange 2010 environment, but it doesn't work for some users.

Using the ExRCA I have been able to identify the following error on the users who are unable to connect:

"Testing the MAPI Mail Store endpoint on the Exchange server."

"Attempting to log on to the mailbox"

Mailbox logon returned ecLoginPerm 1010. You don't have the correct permissions to log in to the mailbox.
EMSMDB Status: ecLoginPerm 1010
Elapsed Time: 225 ms.

On users that are able to connect it goes through the ExRCA without any issues.

Any help would be much appreciated.

Cheers,

Jack

	Testing the MAPI Mail Store endpoint on the Exchange server.
	An error occurred while testing the Mail Store.
	Additional Details   Elapsed Time: 333 ms.
	Test Steps   Attempting to ping the MAPI Mail Store endpoint with identity: outlook.mg.com:6001.   The endpoint was pinged successfully.   Additional Details Attempting to log on to the Mailbox.   An error occurred while logging on to the Mailbox.   Additional Details   Mailbox logon returned ecLoginPerm 1010. You don't have the correct permissions to log in to the mailbox. EMSMDB Status: ecLoginPerm 1010 Elapsed Time: 225 ms.