[Ubuntu-BR] Ajuda com Samba3

[Rafael Tomelin]

Pessoal,

Estou montando um servidor samba3 para ser controlador de dominio, porém
estou tendo alguns problemas commo "smbpasswd" e o "tdbsam".

Eu adiciono o usuario no linux (servidor) da seguinte forma:
adduser usuario
no home: /home/usuario
No shell: /bin/false
password: senha

depois adiciona o usuario no samba:
pdbedit -a -u usuario -h /home/usuario -g grupo

Entao tento logar de uma estação tambem linux:
net rpc join member -U usuario
Password:

Erro:
Creation of workstation account failed
Unable to join domain Meu_Dominio.

minhas configurações são (smb.conf):
[global]
   workgroup = meuDominio.com
   server string = Meu_Dominio
   netbios name = Meu_Dominio
   security = user
   hosts allow = 192.168.1. 10.0.0. 127
   load printers = yes
   printcap name = /etc/printcap
   printing = cups
  passwd program = /usr/bin/passwd %u
  passwd chat = *New*password*
%nn*Retype*new*password*%nn*passwd:*all*authentication*tokens*updated*successfully*
  maquinas W2k
  unix password sync = Yes
   log file = /var/log/samba/log.%m
   log file = /var/log/samba/log.%u
   max log size = 100
   passdb backend = tdbsam
   socket options = TCP_NODELAY # para lidar melhor com a rede
   os level = 100
   domain master = yes
   preferred master = yes
   guest account = nobody
   veto files = /*.mp3/*.wmv/*.wma/*.ogg/
   encrypt passwords = yes
   smb passwd file = /etc/samba/smbpasswd
   domain logons = yes
   logon script = %U.bat
   wins support = yes
   dns proxy = no
;  add user script = /usr/sbin/useradd %u
;  add group script = /usr/sbin/groupadd %g
;  add machine script = /usr/sbin/adduser -n -g machines -c Machine -d
/dev/null -s /bin/false %u
;  delete user script = /usr/sbin/userdel %u
;  delete user from group script = /usr/sbin/deluser %u %g
;  delete group script = /usr/sbin/groupdel %g
e o servidor sera o master brownser
[homes]
   comment = Home Directories
   browseable = no
   writable = yes

 [netlogon]
   comment = Network Logon Service
   path = /home/netlogon
   browseable = no
   guest ok = yes
   writable = no
   share mod[printers]
   comment = Impressoras no samba
   path = /var/spool/samba
   browseable = no
# Set public = yes to allow user 'guest account' to print
   guest ok = no
   writable = no
   printable = yes

[Teste]
        comment = Teste com samba
        path = /samba
        browseable = no
        writable = yes
        public = no
        guest ok = no


OI que pode estar errado?