I have been working on this problem for a month and have not come up with a decent solution. I need my Exchange 2003 servers to route all mail to an SMTP server. Sounds simple, but if an Exchange user e-mails another Exchange user that exists in the same mail store, that e-mail never leaves the store. I need all mail, even mail that will be delivered to the same store, to be routed to a special SMTP server. I've looked at MailInterecept and MIME Sweeper, but both programs have serious problems. Any ideas?