[Samba-it] Password scaduta

[Andrea Bencini]

Ho installato samba-3.0.28-0
Ho configurato tramite pdbedit "maximum password age".
Da un client Xp Prof, dopo aver digitato le credenziali, e' venuto il 
messaggio:
"La password scade oggi. Cambiare la password adesso? Si No"
E' stato scelto "Si", e' stato digitato la nuova password con la sua 
conferma ed e' venuto il messaggio:
"Manca l'autorizzazione per cambiare la password".
La configurazione globale di smb.conf e' la seguente:
-------------------
[global]
 name resolve order = wins bcast hosts
 ldap ssl = No
 passwd chat = *New*Password* %n\n *Re-enter*new*password*%n\n 
*Password*changed*
 show add printer wizard = no
 time server = yes
 passwd program = /usr/bin/passwd %u
 printing = cups
 workgroup = DMN-MAGIM
 server signing = Auto
 os level = 35
 printcap name = /etc/printcap
 add machine script = /usr/sbin/useradd -s /bin/false -d /var/lib/nobody 
'%u'
 delete user script = /usr/sbin/userdel -r '%u'
 max log size = 100
 restrict anonymous = no
 smb ports = 139
 add group script = /usr/sbin/groupadd '%g'
 delete group script = /usr/sbin/groupdel '%g'
 add user to group script = /usr/sbin/usermod -G '%g' '%u'
 logon drive = R:
 username map = /etc/samba/smbusers
 domain master = yes
 encrypt passwords = yes
 passdb backend = tdbsam
 wins support = Yes
 max protocol = NT
 path = /data
 unix password sync = yes
 acl compatibility = winnt
 logon path =
 add user script = /usr/sbin/useradd -m '%u'
 set primary group script = /usr/sbin/groupadd '%g'
 syslog = 0
 preferred master = yes
 domain logons = yes
 pam password change = yes
-----------------------
Dal file di log "log.smb" si evidenzia
----------------------
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_chauthtok(691)
  PAM: UNKNOWN PAM ERROR (19) for User: pierluigim
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_passchange(847)
  smb_pam_passchange: PAM: Password Change Failed for user pierluigim!
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_chauthtok(691)
  PAM: UNKNOWN PAM ERROR (19) for User: pierluigim
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_passchange(847)
  smb_pam_passchange: PAM: Password Change Failed for user pierluigim!
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_chauthtok(691)
  PAM: UNKNOWN PAM ERROR (19) for User: pierluigim
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_passchange(847)
  smb_pam_passchange: PAM: Password Change Failed for user pierluigim!
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_chauthtok(691)
  PAM: UNKNOWN PAM ERROR (19) for User: pierluigim
[2007/12/20 19:02:10, 0] auth/pampass.c:smb_pam_passchange(847)
  smb_pam_passchange: PAM: Password Change Failed for user pierluigim!
------------------------------
Potete aiutarmi a risolvere questo errore?
Ringrazio
Andrea