We've just installed Exchange 2010 Standard on a new server and it currently co-exists with our current Exchange 2003 server.
There is only one user mailbox on the Ex2010 server so far, and we've since run into major hardware issues on the 2010 box that leads me to suspect a compromise of the OS and Exchange 2010 installation. This server is holding hub transport, cas, and mailbox roles.
Also, I am running another installation of Exchange 2010 in a VM on a different box (temporarily) with the CAS role only for OWA to work for mailboxes that were moved to the Exchange 2010 server.....this would go away once all mailboxes were moved.
Now that the hardware problems have been resolved, I'd really like to flatten the box and start over.
What is the process for safely uninstalling Exchange 2010 from the current org and ensuring it doesn't affect the current Exchange 2003 environment ?
A little more info.....my AD is domain and functional level of Windows 2003, and I do have a 2008 DC running. Obviously, AD and Schema were prepped to accept the EX2010 installation.