>> In /etc/mail/access: >> >> domain1.com REJECT Probable Account Forgery >> user1 at domain1.com OK >> user2 at domain1.com OK >> user3 at domain1.com OK >> >> Mike > > It was that simple? Woah... thanks :) > I would make one minor modification: To:domain1.com .... To:user1 at domain.com etc The "To:" ensures that it only applies to incoming mail matt