I have just installed Exchange 2010 SP3 on Windows 2012.
I can create mailboxes perfectly fine but when I try to access any user mailboxes i get the following error message and no mailboxes will show:
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Active Directory operation failed on DC1.contoso.com. This error is not retriable. Additonal infomration: The specified method is not supported.
Active directory response: 00002040: SvcErr: DSID-031403C3, problem 5010 (UNAVAIL_EXTENSION), data 0
It was running the command 'Get-Recipient -PropertySet ConsoleLargeSet -ResultSize '1000' -SortBy DisplayName -RecipientType 'UserMailbox''
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Anyone come across this, I keep seeing references to a LDAP issue.