This may be a long questions so I will try to summarize. Our company has a Windows 2000 Small Business Server. We use the server for our Domain’s (mydomain.com) email and webpage. We are also hosting a few other webpages for other domains in IIS on this server which we separate by IP. Our problem began when this company created another company which we will call 2nddomain.com. They would like to receive mail from that domain, which WOULD be easy to do. We could have just added that 2nddomain.com to the recipients policy and be done with it. However, when they respond to messages they want to be able to have a reply address of the new domain. Basically, switch between the two and have completely separate exchange boxes. This would work to setup the Outlook client with separate profiles with one mailbox to mydomain and the other to 2nddomain. I attempted to setup all of this already and I could get it to work, but I was having problems with the Outlook Webaccess for the 2nddomain. I couldn’t get it to allow any of the 2nddomain users in. What I am asking is if anyone knows the proper way to setup a second email domain on this exchange server so that it is separate from the existing domain. It would be nice to use the same usernames for both domains, but I don’t think that is possible and it is not critical if we can’t. I have read a lot on exchange however I can’t seem to find an answer to this specific problem. I am not sure if I need to actually setup a seperate domain to accomplish this or if exchange can make the changes. Can anyone enlighten me on this question? Thank you. I know this question is worth 500 points, but I didn't have them at the time. I will continue to add the points when I get them.