Exchange 2016 and Missing Emails

Hi, I did windows updates and they crashed my Exchange Server VM (Server 2012 R2+Exchange 2016).

When I got Windows back up, and the Exchange Services running again, I noticed I could not log in, I lost the Trust Relationship between the Email and DC.

I got that fixed , and email back up, but then I noticed everyone in the domain lost all their email back to last Aug.  New emails were coming in and being delivered, and we could send emails out.

Logged into ECP and noticed the Database was in Failed mode, so I got the Database back to Healthy, but I'm still missing my emails.

I do have backups, but was wondering if there was anything else I can try?

Who is Participating?
Olgierd UngehojerSenior Network AdministratorCommented:
Did you restore VM from checkpoint ? If yes I amuse that your checkpoint was old and this why you lost emails between checkpoint and present time. Trust relationship is related with time and when system do not communicate with domain controller for log time.
Adam BrownSr Solutions ArchitectCommented:
Olgierd's comment is probably where you need to start. Checkpoint restores are generally bad for production servers for a lot of reasons. You will want to restore an EDB file from your most recent backup, mount it in a recovery database in Exchange, then restore mail from there.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Snapshot has been rolled back e.g you server went back in time and that was the reason for trust failure
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2ndFloorAuthor Commented:
Hi Everyone, I'll just address the Checkpoint comments...

There is only one check point for this VM, and it is from Aug 22nd of 2017, but I did not tell it to revert to that checkpoint.  Why would it revert back?  Very puzzling.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
bizarre but there is only one way, it can travel back in time.... and it seems highly coincidental that the snapshot (checkpoint) is also dated August 2017!

Restore VM, otherwise Clients/Customers/Users, there email has gone forever.
2ndFloorAuthor Commented:
Hi Andrew,
Yes, that is very true, there is only one other person who could of applied that checkpoint, and now I have to question their word.
2ndFloorAuthor Commented:
Thanks for everyone's input!
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