Mike Kercher wrote: > On second thought, are mails being delivered locally or are you relaying > to Exchange (or similar)? > It cannot possibly be used for local delivery. Do you have any idea what it takes to handle 5 million local deliveries daily? I spent over three years managing a system that delivers more than 2 million emails and handles on average 200 million smtp transactions on a daily basis and you do not use a single box for this sort of thing. Delivering 5 million emails daily with a single box has got to be an outgoing box.