Hi, I am testing samba-3.0.0beta2 with ldap. When I tried to map existing posix group sysadm to predefined Windows group Domain Admins I did exactly as it was described in http://www.unav.es/cti/ldap-smb/smb-ldap-3-howto.html After I run the command: net groupmap add sid=S-1-5-21.....-512 uvixgroup=sysadm type=domain I got the message: Successully added group admins to the mapping db But command net groupmap list returned nothing. LDAP search did not show any changes in sysadm group, no any additional attributes. Thanks for help, Ely Zavin.