Exchnge 2K- default/garbage box

I am running w2k and exchnge 2k in my own domain. When someone mispels a name (johnpoe@xyz.com) and it should be johndoe@xyz.com I want all the mispelled undeliverable mails to go to 1 mailbox. Now I get a undelliverable message but not the e-mail itself. Do I need a script. Where can I get one? Thanks for your support