Exchange 2007 missing Mailbox, user still in AD

So I have a handfull of users who are suddenly not in my EMC/ OAB, but her profile is still in AD. I did change a few of the AD FSMO roles on Friday... is that related perhaps?
I already tried running the clean-mailboxdatabase command, and the mailboxes aren't in the disconnected mailbox folder.

UPDATE: So it indeed seems to be AD related. The DC/ main AD server has the users in users and computers, but the older AD server does not. Is there a way I can force exchange to pull from my main AD server? Or can I update this older one from the new server? (I plan to decommission it, but not during business hours.)

This is a high priority for me, so I appreciate any response.
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biofishfreakAsked:
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Manpreet SIngh KhatraConnect With a Mentor Solutions Architect, Project LeadCommented:
So I have a handfull of users who are suddenly not in my EMC/ OAB, but her profile is still in AD. I did change a few of the AD FSMO roles on Friday... is that related perhaps? - No only if replication issues between DC's

Dont change DC's but try to resolve the AD replication issue .... ideally i would get the FSMO roles back and then check whats wrong with the other server not updating

- Rancy
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biofishfreakAuthor Commented:
I ultimately want to decommission this problem prone server- do I need to resolve these replication issues first, or can I just demote as a AD server?
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biofishfreakAuthor Commented:
Alright, so I figured out that the reason was indeed that exchange was pointing to DC2, which is having replication issues. I've begun working through the process of mitigating that error (the clocks are synced!), but I needed a more immediate fix. The solution was to manually exclude the DC2 using
set-exchangeserver $XCNGSRVR -StaticExcludedDomainControllers:DC2

Open in new window

where $XCNGSRVR is the exchange server name
and where DC2 is the domain controller to be excluded
I figured out that I can remove the setting by running the same command, but change DC2 to "$Null".

This is for the next poor soul who comes across this. In reality though, you're right Rancy- I need to clean up my $hit in AD.
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