[Samba-it] Problema winbind

[shacky]

Ciao a tutti.
Sto cercando di aggiungere il server proxy (Debian Stable) al dominio
Windows gestito da un server Windows 2003 Standard di prova, ma ho
qualche problema:

proxy:~# net join -w TEST.LOCAL -S win2003test -U Administrator
Administrator's password:
[2008/07/26 15:31:31, 0] libads/kerberos.c:ads_kinit_password(208)
  kerberos_kinit_password PROXY$@TEST.LOCAL failed: Preauthentication failed
[2008/07/26 15:31:31, 0] utils/net_ads.c:ads_startup(289)
  ads_connect: Preauthentication failed
ADS join did not work, falling back to RPC...
Joined domain TEST.

proxy:~# wbinfo -u
Error looking up domain users
proxy:~# wbinfo -g
Error looking up domain groups

Questo è il mio /etc/samba/smb.conf:

[global]
  server string = Samba Proxy
  password server = win2003test
  security = domain
  encrypt passwords = yes
  workgroup = TEST.LOCAL
  winbind separator = @
  template homedir = /home/%D/%U
  template shell = /bin/bash
  winbind uid = 10000-20000
  winbind gid = 10000-20000
  winbind enum users = yes
  winbind enum groups = yes
  log file = /var/log/samba/%m.log
  max log size = 50
  socket options = TCP_NODELAY
  realm = TEST.LOCAL

Quale può essere il problema? Mi aiutate a risolverlo per favore?
Grazie mille!
Ciao.