I have the multiple domain setup working, i.e. multiple recipient policies and what not. My question is how can I use the secondary domains as just smtp/pop3 domains? Our company hosts several websites and domains and I would like to migrate over to exchange server to handle this. Some problems I foresee are that since the users are controlled through AD, what happens in the case of making two separate accounts for two separate domains, but with the same username, (fdeluca@domanin1.com, fdeluca@domain2.com)? How does AD/Exchange handle this? Please bear with me as I am quite new to the idea of multiple domains. Thanks a lot.