joining the domain

[Nagendra KV]

HI

Help is required!

I get following error when joining the domain 
Samba used: 3.0.10 on HP-UX 11i


# net join -I a.b.c.d -U <user_name>
[2006/01/25 20:00:57, 0]
rpc_client/cli_netlogon.c:cli_nt_setup_creds(256)
  cli_nt_setup_creds: request challenge failed
Password:
[2006/01/25 20:01:21, 0]
rpc_client/cli_netlogon.c:cli_nt_setup_creds(256)
  cli_nt_setup_creds: request challenge failed
[2006/01/25 20:01:21, 0] utils/net_rpc_join.c:net_rpc_join_newstyle(319)
  Error domain join verification (reused connection):
NT_STATUS_INVALID_COMPUTER_NAME

Unable to join domain <domain_name>




Thanks
Regards
Nagendra KV