Hi, We are facing very strange problem. Let me first till you what is our configuration. Our company consists of 4 sites with windows 2000 advanced servers and each site includes two or more exchange 2000 servers. From two days we began to receive NDR when trying to send messages to specific users. Message is "two recipients are configured with the same e-mail address. Contact your administrator." When we checked the global address list we found two entries for those users. One of them exists in active directory but the other one is not. I tried to remove those entries by using ldp.exe but the error message "object not found" returned. Please help Best Regards Ashraf ----------------------------------------- This E-Mail is confidential. It may also be legally privileged. If you are not the addressee you may not copy, forward, disclose or use any part of it. If you have received this message in error, please delete it and all copies from your system and notify the sender immediately by return E-mail. Internet communications cannot be guaranteed to be timely secure, error or virus-free. The sender does not accept liability for any errors or omissions.