I searched on the forum - the question was raised here, but the answer was not clear -
I have a slightly different situation. I have one old mail server the license is going to expire, and I need to manually migrate all 600 mailboxes to a new server (IMAP mailboxes), so I cannot do a cutoff migration, both servers will need to receive incoming emails during the migration period.
My question is if I add the new server in the Host List (see screenshot below), will incoming emails be delivered to both hosts in the list?
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