Team,
I have successfully integrated adfs 3.0 and Exchange 2013 owa and ecp. However, we have a coexistence environment with exchange 2007. When you access owa, which then redirects you to adfs, sign-in, and then get redirected back to owa. If your mailbox is still within exchange 2007, you get a blank login page. If you mailbox is in exchange 2013 then you successfully get the owa page for 2013. The problem is that all exchange 2007 mailbox users get blank pages at login. So I have determined that exchange 2013 cas is not doing the service location lookup on the mailbox to determine if a redirect to the legacy owa address is needed. Is there a configuration setting that I might be missing? Or does the integration with adfs and owa not support the much needed mailbox lookup for a coexistance environment? A side note: if we enable FBA with owa, both login scenarios work just fine (legacy and new 2013). The legacy namespace has been created, and applied to the exchange 2007 urls.
