Hi, i'm using exchange 2007 sp1, however, i found that a problem that , i use Microsoft outlook 2003 when i click new mail and then click the address book, then in the new pop up windows , i found all the mail address (show in the email addresslist) in the server is /o=HK Office/ou=Exchange Administrative Group (FYDIBOHF23SPDLT/cn=Recipients/cn=Administrator. but if i double clcik the name it can show the administrator@xxxx.com and also i use OWA it can show the address without problem What can i do to solve this problem?