Why Does a Business Email Alias Stop Forwarding After a Mailbox Change?

An alias may depend on an old mailbox, group, transport rule, or forwarding address. Changing the destination account can leave the alias pointing to an inactive target.

What to check

Check alias and group membership, forwarding rules, mailbox status, delivery logs, and any loops or external forwarding restrictions.

Recommended next step

Update the authoritative alias destination and test delivery from an external sender. Informatix Systems can troubleshoot business email and DNS.