Is it possible to configure Migration Manager for AD to clear check box "Automatically update e-mail address based on recipient policy" when mailbox-enabling the target AD user?
It is impossible to make QMM for AD clear this check box during mailbox migration.
Check box in question is stored in msExchPoliciesExcluded attribute as {26491CFC-9E50-4857-861B-0CB8DF22B5D7} value. If the value is populated, the check box is cleared. If the value is empty, the check box is selected.
This task can be completed by modifying the msExchPoliciesExcluded using ADSIEdit. Please refer to the following Microsoft article for details:
