I'm confused with group mappings. I have a win2k pt_BR server in native mode. After joining the domain (samba-3.0.7) and configuring winbind, I have these standard groups: # getent group (...) MYDOMAIN\Computadores do dom?nio:x:16777216: MYDOMAIN\Controladores de dom?nio:x:16777217: MYDOMAIN\Administradores de esquemas:x:16777218:MYDOMAIN\Administrador MYDOMAIN\Administra??o de empresa:x:16777219:MYDOMAIN\Administrador MYDOMAIN\Editores de certificados:x:16777220: MYDOMAIN\Admins. do dom?nio:x:16777221:MYDOMAIN\Administrador MYDOMAIN\Usu?rios do dom?nio:x:16777222: MYDOMAIN\Convidados dom?nio:x:16777223:MYDOMAIN\Convidado MYDOMAIN\Propriet?rios criadores de diretiva de grupo:x:16777224:MYDOMAIN\Administrador MYDOMAIN\Servidores RAS e IAS:x:16777225: MYDOMAIN\DnsAdmins:x:16777226: MYDOMAIN\DnsUpdateProxy:x:16777227: (...) Note that the groups are in pt_BR, even the well-known ones. Example: "Computadores do dom?nio" -> "Domain Computers" "Usu?rios do dom?nio" -> "Domain users" wbinfo -g gives this pt_BR list also. Now, groupmap: System Operators (S-1-5-32-549) -> -1 Domain Admins (S-1-5-21-3151312473-487480696-3918700472-512) -> -1 Domain Guests (S-1-5-21-3151312473-487480696-3918700472-514) -> -1 Replicators (S-1-5-32-552) -> -1 Guests (S-1-5-32-546) -> -1 Domain Users (S-1-5-21-3151312473-487480696-3918700472-513) -> -1 Power Users (S-1-5-32-547) -> -1 Admins. do dom?nio (S-1-5-21-3151312473-487480696-3918700472-1263) -> ntadmin Print Operators (S-1-5-32-550) -> -1 Administrators (S-1-5-32-544) -> -1 Account Operators (S-1-5-32-548) -> -1 Backup Operators (S-1-5-32-551) -> -1 Users (S-1-5-32-545) -> -1 How do these two results relate to each other? I'm confused. Isn't "Usu?rios do dom?nio" a well-known group which already has a gid (16777222)? What would happen to "Usu?rios do dom?nio" if I mapped "Domain Users" to, say, "users"?