I have an Exchange 2003 Server (Exch01) in my domain, and recently I have installed another Exchange 2003 Server as front-end server (Exch02) into my domain. When both servers are online, I could see them in the First Administrative Group -> Server, and also my Routing Group -> Members, with Exch01 being the Master and Exch02 being the Member. Now the problem is, whenever I add new user, the default mailbox store of the user will go to Exch02! Why? How to change the default mailbox store back to Exch01? Anything that I need to check/configure? Please help. Thank you.