This sometimes occurs due to misconfiguration of the synchronization service. See the Netscape Directory Server Administrator's Guide for information on these misconfigurations. Choose whether the synchronization service will create Netscape Messaging Server mail accounts. If the synchronization service will create messaging accounts, then you must also indicate the messaging domain name and how the email addresses will be generated by the synchronization service. Choose whether the Windows NT account's full name begins with a surname.
Some cultures commonly begin their names with their surnames.
If your Windows NT domain is populated with names such as these, then you must configure the synchronization service with this information so that it can determine how to populate the surname and givenname attributes for the NT user entries. To start the synchronization service, go to the Status tab in the configuration tool and click Start or reboot the system. The synchronization service is configured to start whenever the Windows NT host is started. If you do not want the synchronization service to start when the Windows NT host is booted, you must change the service's startup state from Automatic to Manual . You do this using the Windows NT Services control panel.