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Issue when running get-mailbox from EMS. Can not see all mailboxes even the mailboxes on the Exchange 2010.

Issue when running get-mailbox from EMS. Can not see all mailboxes even the mailboxes that are on the Exchange 2010. I am suppose to be able to get a list of NOT only Exhcange 2010 but also 2003 mailboxes.

So, I have Exchange 2010 SP3 setup as Hybrid Server to work with Exchange 2003 servers an office 365. I have no problem seeing mailboxes from EMC and moving them from 2003 and 2010, but when I run the command from EMS I only see like 4 mailboxes. Even on the Hybrid server (Exchange 2010) I have more mailboxes….but from EMS I can’t see them.  
I need to make the script work but obviously it wont work unless I will fix this issue.

Below are only few mbx that I can see:
OnPrem Test2
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1 Solution
claudiamcseAuthor Commented:
Also, it tells me when I use the switch -identity for the mailbox that indeed exist on the Exchange 2010 server that the object could not be found.....Very strange.
One question would be, did you install Exchange 2010 into the same Domain as Exchange 2003? if you have a forest with multiple sub domains and Exchange 2010 was installed into a different sub domain then by default you will only see mailboxes that exist in that domain. You can configure the recipient scope to be forest wide though,

Set-AdServerSettings -ViewEntireForest $true -PreferredGlobalCatalog gc1.contoso.com

claudiamcseAuthor Commented:
Excellent!! Thank you so much
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