JW3: Thank you for your time!
OK So this is basically a resource domain that you have now right? Correct
i.e.
Domain A = Users
Domain B = Mailboxes attached to disabled user accounts Yes this is accurate.
DOMAINA\User1 has Mailbox Owner on DOMAINB\Mailbox1 correct? Yes, DomainA\User1 has FullAccess and ExternalAccount permissions.
And in the VAC you are targeting Exch2010-1.domainB.com and are provisioning against DomainB correct? Yes this is correct. In DomainA, the primary EV mailbox archiving server has a new Archiving Task and Provisioning Task for the EX2010 servers in DomainB. (Also created is a new Exchange target, for DomainB.) There is an EVAdmin service account created in DomainB, with permission script successfully ran. This service account is what the archiving and provisioning tasks are attempting to run as.
What are the exact permission errors you are seeing? Errors dealing with "managed folders" or that the credentials for the DomainB service account are invalid, which they are not.
You ran the permissions script as an Exchange Admin specifying the EVAdmin, correct? Yes.
And the EVAdmin has a mailbox on Exchange 2010 that you are targeting? Correct.
Is the EVAdmin in DomainA or DomainB? DomainB.
and its mailbox is on Exchange 2010 as well correct? Correct.