[Samba] Samba doesn't trust Win2k3 domain

[samba at prpopto.demon.co.uk]

Dear All,

I am trying to set up a two way trust with a Win2k3 domain controller.
The Win2k3 domain trusts the Samba domain with no problems but Samba will not trust Win2k3.

The command, net rpc trustdom establish [Win2k3_domain],
produces the following message after supplying the password:

  Could not connect to server [Win2k3_domain]
  [timestamp] rpc_client/cli_pipe.c:cli_nt_session_open(1451)
  cli_nt_session_open: cli_nt_create failed on pipe \wkssvc to machine [Win2k3_domain]
  Error was NT_STATUS_ACCESS_DENIED
  [timestamp] utils/net_rpc.c:rpc_trustdom_establish(4363)
  Couldn't not initialise wkssvc pipe

I have two way trusts with other NT4 and Samba domain controllers working perfectly.

wbinfo -m does not list the Win2k3 domain.

My Samba setup is:
RHEL3
Samba 3.0.9-1.3E.5
PDC/WINS/DHCP

Thanks in advance for any help or suggestions.

Andy.