I have a client that recently split off a division. They set this new division up with it's own domain. So, we currently have two domains(Domain1 and Domain2) that are totally separate. However, since each division is small(Under 100 users), they would like to share the exchange server in domain 1 that already exists. Please keep in mind that each company will have its own smtp domain(company1.com and company2.com). They would like the local users that are on the same domain as the exchange server to access Exchange the normal way(s). They would then like to set up Pop3 messaging on the Exchange server just for the company2.com domain users. So, is this possible, and if so, what is the best way to accomplish this? Thank you for any help!