We have an ISP that provides our Internet email accounts. I have installed Ex2000, migrating from cc:Mail. I have “in-house” addresses for all users. Some users have an external email address provided by the ISP. Is there a white paper or info. on how to resolve the reply address? I would like to have the reply address be the in-house address when sending to an in-house mailbox and the Internet email address be the reply when sending an external email. Thanks for the excellent forum. Tom