One of our users mailbox was disconnected from his AD account. Then that mailbox was purged. He comes back again after some time and we start with a brand new mailbox and joined it to
his existing AD account.
External people who were able to send him emails before had his email address in their mail client cache. Now when they send him email using the same email address from their cache they get a bounce back. I don’t have that NDR as of yet. The email address has not changed and it is the same. Is there some other way this issue can be rectified besides the user calling all those external business users and telling them to clear the cache. This user does not have their email addresses.
Thanks