Article ID: 2746030 - View products that this article applies to.
Consider the following scenario:
Note The expected behavior is that the returned version of EWS should match the Exchange version of the user’s mailbox.
This issue occurs because the Autodiscover service on the Exchange Server 2010 selects a random ExternalURL value for the EWS server. This occurs when the cost of the route from every EWS server to the mailbox server is the same.
To resolve the issue, install the following update:
(https://support.microsoft.com/kb/2746164/ )Description of Update Rollup 6 for Exchange Server 2010 Service Pack 2
For more information about proxying and redirection in Exchange Server 2010, go to the following Microsoft website:
General information about proxying and redirectionFor more information about how to upgrade from Exchange 2007 Client Access to Exchange 2010 Client Access, go to the following Microsoft website:
How to upgrade from Exchange 2007 Client Access to Exchange 2010 Client AccessFor more information about the Autodiscover service, go to the following Microsoft website:
General information about the Autodiscover service
Article ID: 2746030 - Last Review: February 12, 2013 - Revision: 1.0