Doing a user clean-up and deleted a particular user. Now when someone sends an email to a conference room resource to book, they get an error back.
Remote Server returned '550 5.1.1 RESOLVER.ADR.RecipNotFound; Recipient not found by SMTP address lookup'
How is this user tied to this room resource? I can't find any mention of them in the room resource settings. Maybe I need to use Powershell? Help!