I need to add an addtional Authorative SMTP domain to our exchange server.
We have aquired another organization and will be moving them to our exchange server.
The question is "Can I add the new authorative domain ahead of time as long as I don't update the public MX record?" My concern is that if I create it ahead ofthe cutover date that emails from mailboxes within our exchange server will deliver the message to the new local mailbox rather than to the outside organization.
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