When migrating a mailbox from an external server to mailcow, a domain, mailbox with the same domain + email address had to be created.
With that mailbox with the same email address in place, the mailcow server will deliver email to itself - not to the external mail server.
How can I disable/prevent that? Until the migration hadn’t finished, DNS records updated, last checks, etc be made, the emails should not be delivered to itself but rather still to the external mail server.
