We just had two quarantined mailboxes that we were not able to solve so we disabled them for each of the two users. The mailboxes where deleted right away.
It worked well, then we decided to recreate the mailboxes with the same email alias as before for the existing user. We restored all emails into the mailboxes from PST archives made before deletion.
This worked but with one caveat when another domain user sends an email using autocomplete or by replying to a message that he received from one of these prior the disable/recreation (It works only if a colleague uses the address book to get the recipients
address avoiding the autocomplete...).
The message comes back with the error RESOLVER.ADR.ExRecipNotFound with a cryptic recipient address like the one below :
ERROR MESSAGE (removed sensitive info)
Generating server: XXXX-EXCH-001.dmn.local
IMCEAEX-_o=First+20Organization_ou=Exchange+20Administrative+20Group+20+28FYKIASFF23SPDLT+29_cn=Recipients_cn=219932f63ae44a1192b34d5a3c778797-John@dmn.local
Remote Server returned '550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found'
It seems Outlook or Exchange is trying to send the message to the old mailbox that has been deleted...
How could we solve this??
I recall a way to add a X500 alias to the new mailbox that would handle the mis-direction from the old mailbox.
Anyone has an idea or guide somewhere on how to do that?
Thanks.