Samba登入NT域的问题

[root@test samba]# smbpasswd -j WM-SERVER -r DBSERVER
cli_net_auth2: Error NT_STATUS_NO_TRUST_SAM_ACCOUNT
cli_nt_setup_creds: auth2 challenge failed
modify_trust_password: unable to setup the PDC credentials to machine DBSERVER.
Error was : NT_STATUS_NO_TRUST_SAM_ACCOUNT.
2002/05/16 11:47:17 : change_trust_account_password: Failed to change password f
or domain WM-SERVER.
Unable to join domain WM-SERVER.
我的root在NT已经设置了Domain Admins了,怎么还是不行呢?