Deny only a few local users

[Ugo Bellavance]

Hi,

        I have MS in front of an Exchange 2000 server.  I want to reduce the load on the Exchange server by blocking messages addressed to ex-employees and a few other usernames, like sales at .  However, I don't want to treat these messages as spam, but instead simply delete them.

        Is there a simple way to do that?

Thanks,