I'm in the process of migrating slowing to Exchange 2010. Right now all of my user access 2003 owa https://server.domain.com/exchange. I want to cut over to 2010 OWA before I start to move users mailbox what my want 2003 users to use the 2010 OWA. I have alredy read the article on how I can setup 2010 to do this. I have to force all users to use the new OWA name http://webmail.domain.com (please note this is going to me the same name foe internal and external). For example when I cut over to the new OWA server I want user who type in the old DNS address to get redirected to the new OWA address???? How can I do this. I thought about adding a CName record in our external done to point the old OWA address to the CAS 2010 IP. But I know the set-virtualdirectory command reference the old OWA address and I'm afreaif with a DNS CName record this will cauase a loop..
Please advice what do I need to do in DNS