How do I change the default e-mail address to always be from first initial, last name @domain.com? Depending on when the user was set up determines if their default changes back to last name, first inital @domain.com. I manually change it to be the primary, yet it will still change back. I have to receive e-mail from first initial, last name; last name, first initial; and first name and last name. I have exchange 2000 server. Another question, can exchange 2003 be installed on a windows 2000 server?