I'll try not to get too long winded, but this one is complex.
We have 1 exchange 2010 box that is also a DC (bad I know but thats how I got it). The AD database is damaged beyond repair per MS (however our primary dc with all the fsmo roles is fine). Only solution is to demote/promote, but I can't since exchange is installed. First thought was to create a new mail server, move everything kill old one. However I ran into issues, since AD was corrupt I couldn't attach to the new server, it gave me an authentication error regarding keybrose and AD issues. So I'm ditching that idea, as it seems too risky now that moving these while AD is corrupt will probably do more harm than good.
So here is what I'm thinking. I am going to have to bite the downtime bullet, and just start exchange from scratch. So if anyone can validate my steps please do and let me know.
1. dismount database and be sure they come down clean.
2. copy/backup/copy again the edb files
3. uninstall exchange
4. dcpromo box
5. disjoin from domain
6. use adsi edit to be sure it is all gone.
7. fire up new box
8. give it same name (to ensure less work on certs/dns/firewall etc.)
9. install exchange and rollups
10. create blank user mailboxes so new mail starts flowing right away
11. mount old edb's as recoverDB and start restores
Am I missing anything?
Do you think #8 is ok to do, or should I start with a new name just to be sure it is 100% clean and not using the old stuff. Obviously this requires a good deal of work since I then have to touch each user, but I have a feeling I'll be rebuilding outlook profiles anyway.
Will their group memberships all work? I'd assume so since it is tied to the AD user, but just concerned.
What is the most effective command to accomplish #10. Could I do it via csv, or some other script method?