550 User Unknown -- Exchange 2000
Exchange 2000
These guys in question are having some odd issues with their mail through their Exchange server, and I'm a bit baffled as to what's causing the problem.
Basically there's one particular user who no one can send email to, it seems. The AD account is configured, as is the exchange mailbox. However, when someone inside the same domain tries to email her, or if I try to email her from the outside, we get a "550 User Unknown" error. That can't be right though, because I'm looking right at the mailbox in System Manager, and the corrrect email address is configured in her AD account.
So can someone point me in a direction as to where to start looking for clues?