Exchange 2010 Generate NDR for Disabled User Account
I have a user account that I have disabled in Active Directory, however when external users still send e-mail to this account's e-mail address, they do not get a NDR. I need to have it so when someone e-mails the user they get a bounce back/NDR message. I would assume if I delete the mailbox this would occur, but I do not want to do that. Is there another way?