Hi All,
We are in coexistance with Exchange 2003 as legacy and Exchange 2010.
We have setup the exchange 2010 environment and set legacy URL to Exchange 2003. But when a 2003 user logs on to OWA 2010 and providing the credentails its redirected to OWA 2003 Login page where he again have to provide the credentails.
Some back ground.
We have published Exchange 2010 OWA using TMG with Single sign on.
Authentication method on OWA 2010: Form Based
Authentication method on OWA 2003: Integrated Windows Authentication
Any ideas?