In my experience, it’s easier to give your new exchange server a new domain name and make it a second exchange server on your network. Migrate all of your mailboxes over to it, then decom the old one and assign it’s old IP address to the new one.
That should fix your OWA issue as well. But that may resolve the issue once you switch IP’s on your new box.
We are in a process of moving an existing Exchange 2003 Enterprise Edition with AD to another new server. Once moved the old server will be decommissioned. We have kept the domain name same. We are also going to retain the IP addresses.
We have already setup the new server as ADC and installed Exchange 2003 SP2 in the same Organization. The Server is also acting as a global catalog. We have replicated the Public Folders and Offline Address list. We have tried moving 6-7 mailboxes on the new server. After moving the mailboxes when we try to access them using the same OWA URL which was used earlier we do get a login page, But after inserting the login and password for moved mailboxes we get page cannot be displayed. Can somebody throw light on this behaviour. Also it would be helpful in case somebody can guide the procedure to move forward on this migration.
Thanks & Regards