We are migrating Exchange 2003 to 2010. The servers are co-existing nicely and OWA appears to be working correctly for users on both servers, except for a minor point.
For users whose mailboxes are still on Exchange 2003, logging into OWA 2010 correctly and successfully redirects them to OWA 2003. However, when the user clicks Logoff, the OWA 2003 logon page appears. We'd like this to return to the OWA 2010 logon page.
Is returning OWA 2003 mailbox users to the OWA 2003 logon page normal in a mixed 2003/2010 migration environment? Or, did we miss a step in the 2010 implementation?
What's the best solution to redirect the OWA 2003 logon page URL back to the OWA 2010 logon page?
Exchange 2003 - legacy.ourcompany.com
Exchange 2010 - mail.ourcompany.com
We utilize split DNS, so the URLs are identical internally and externally.