There are 2 servers in our office both 2003 R2 SP2 the DC is a file server and the 2nd server is a member server and it runs our exchange server. When I use the AD to enroll a new user on the DC it does not give me the option to setup a mailbox and in the user properties it does not show any of the exchange tabs. when I use AD on the exchange server it prompts me to create a mailbox. Why would the AD act differently in the same domain on 2 different servers?