- You have multiple Active Directory sites in a Microsoft Exchange Server 2013 environment.
- You configure Outlook Web App virtual directories on all Client Access servers in each site with the same Internal URL and External URL, such as mail.xxxxxxx.com.
Notexxxxxxx is the name of the domain.
- A Client Access server handles a proxy request for a cross-site user who uses a different URL to sign into Outlook Web App. For example, the user tries to sign into Outlook Web App through owa.xxxxxxx.com.
The expected behavior is that the Client Access server should be a proxy for the user to the Mailbox server on which the user is located.