I have a NT 4.0 domain with users that have mailboxes in an AD domain hosting exchange 2007. ADMT has migrated and disabled the accounts, primary accounts for exchange 2007 mailboxes, from the NT 4.0 domain.( These accounts will be used in future , post migration).

I have migrated from exchange 5.5 – Exchange 2003 – Exchange 2007. All the mailboxes migrated are set as linked mailboxes and work just fine. any NEW mailboxes are set as user mailboxes however I need to change them to linked however :

I have tried to create a linked mailbox via the shell and gui tools but cannot. The GUI Exchange management console does not show the trusted NT 4.0 domain, and I cannot therefore select a user account for the linked mailbiox. The add-mailbox shell command requires a AD domain controller (-linkeddomaincontroller).

Does Exchange 2007 not supported trusted NT 4.0 domain users ?