I used the shared hostin with exchange 2003 (a very good article) and now I'm attempting to add a machine to the ou with the suffix. I have added the suffix to my dns and the machine I'm attempting to add currently exists in the domain that hosts the ou but I recieve the ol' Note: This information is intended for a network administrator. If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\WINDOWS\debug\dcdiag.txt. The following error occurred when DNS was queried for the service location (SRV) resource record used to locate a domain controller for domain bsnpp.com: The error was: "DNS name does not exist." (error code 0x0000232B RCODE_NAME_ERROR) The query was for the SRV record for _ldap._tcp.dc._msdcs.bsnpp.com Common causes of this error include the following: - The DNS SRV record is not registered in DNS. - One or more of the following zones do not include delegation to its child zone: and the C:\WINDOWS\debug\dcdiag.txt says: The following error occurred when DNS was queried for the service location (SRV) resource record used to locate a domain controller for domain bsnpp.com: The error was: "DNS name does not exist." (error code 0x0000232B RCODE_NAME_ERROR) The query was for the SRV record for _ldap._tcp.dc._msdcs.bsnpp.com Common causes of this error include the following: - The DNS SRV record is not registered in DNS. - One or more of the following zones do not include delegation to its child zone: bsnpp.com com . (the root zone) For information about correcting this problem, click Help. Sorry about the long message and thank you in advance. Dan