i have exchange 2003 in win2003 sp2. and AD in win2003 sp2 both are different servers. and outlook 2003 sp3 as client. UserA wants to send email from his mail to client of UserB, becuase userB is out. I have giving full mailbox right to UserA in UserBmailbox in AD. I have also add UserB mailbox in UserA outllook. UserA can easily reply emails when he is reading emails on UserB. and when client recived emails as UserB. However, UserA want to create new emails, but he does not have the option of from or send as in outlook. is there anything that need to be change in outlook or exchange. i see that in our AD, and user properties , we do see the Send AS tab. Any help? really appreciate.