When migrating a mailbox using On Demand Migration for Email (ODME), there is an error of 'access is denied' and tests of Exchange application impersonation is confirmed to work. Other mailbox migrations are working as expected.
Unexpected error on source mailbox email@example.com. Access is denied. Check credentials and try again.(Access is denied. Check credentials and try again.)
Migrate the desired mailbox content in the first pass of the migration.
On the second migration of the mailbox, migrate any of the settings or permissions needed. Do not migrate the mailbox data from the first pass.