I renamed a user in ADUC which appeared to go ok. The home directory was altered and all seemed well......until it was noticed that the "new" user had the old users e-mail address. I went back into the User details and sure enough the e-mail address referred to the old user. I have tried to set the primary e-mail address to the correct (new user) address and remove the old e-mail address but after about a minute the e-mail address is automatically set back to the original user. The exchnage mailbox is seen as the new user and all other details appear correct for the new user. Any idea's to assist me in resolving this isue other thatn migrating the mailbox to a .pst and deleteing the user and starting again ? Exchange 2003 on SBS Outlook XP Thanks Simon