I'd like to know if it's possible, and if so how to make a single exchange 2003 server that's on domain mydomain.com pull e-mail from a pop3 server on xyz.com to its mailboxes. Also, can the exchange server be setup so that the mailboxes receiving the pop3 mail be made to send mail as the a pop3 account from domain xyz.com? In other words mydomain.com is on the exchange server. I want it to pull e-mail from certain pop3 accounts at xyz.com. I then want it to be able to send mail back through the pop3 server as an xyz.com address and still have it's normal functionality of mydomain.com SMTP. Is this possible? If so, how can it be done?