Question : Outlook 2007 cannot update CAS

We recently has a failure of our CAS server. I built a new CAS array and made all the needed Exchange configurations.

In Office 2010, I can update the server to "owa.cuaa.edu" (our CAS array address)

In Office 2007 I cannot get this to resolve properly, it keeps resolving to "CUAA-FE03" (which is the failed CAS)

I have tried removing the profile and creating a new on, it still resolves owa.cuaa.edu to CUAA-FE03 when I click "Check Name".

How do I get this to update properly?

Answer : Outlook 2007 cannot update CAS

The problem will probably be with the autodiscover setup. Check the dns resolution for autodiscover.yourdomian.internal. Check the IP is resolves too and if its going to one of the new CA servers. This article discribes the in's and outs of  Autodiscover;
http://technet.microsoft.com/en-us/library/bb124251.aspx
Also you can see what outlook is looking at for the config when you open outlook, hold <ctrl + right click> on the outlook tray icon. Select Test Email AutoConfig. Run the test and check the results / resolved servers and autodiscover locations.