We recently(6-8 months ago) migrated to new hardware for our exchange 2013 server, and when I did the install on the new hardware, I mistakenly changed the DNS suffix to our internal DNS name out of habit. I've been getting a couple pop up errors when we open Outlook, and IMAP doesn't like the name error with our secure Certificate.
I am planning on doing updates to the server in the next week or so, and from what I can read, uninstalling the "client access" portion of exchange should let me rename the DNS suffix, reboot and then reinstall that portion of Exchange.
Does this sound feasible, or do I need to migrate everything off the server, reinstall and then migrate back, or is there a change with a recent update that allows for renames. We are on CU7 and going to CU10 planned for this Sunday. Also we only have 1 server running as standalone.