Dear All, Good Morning:-) Here in my organization, i am facing a great problem regarding client side configuration. I have a Domain Controller(xyz.com) and an ADC. I install exchange as ADC/Standalone server. My domain controller is a DNS. After installation of exchange 2000, i went to client side and from outlook 2002 when i put the user name it give me some error message like"The name could not be matched to a name in the address list." I don't know why this is Happening but i am in burning need of this solution. IS there anybody To solve this Problem. With positive expectation i am waiting for your SOLUTION. thanks with best regards, Mohammad Abdul Haque(Babu). System Engineer --------------------------------- Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now