I recently worked through a migration of an NT4 PDC to a Samba PDC using
the vampire command,
while doing this I ran into some problems, possibly including your problem.

There are at least two steps to this procedure that are not included in
most of the documentation
on how to do this that I found on the net. These are:

1. you need to use the NT4 server's "Server Manager" tool to create a
backup domain
controller account for the Samba box before you issue the "net join" command

2. you need to manually change the SID of the Samba box to be the same as
the SID of the NT4 PDC that it will be replacing

You might also have forgotten to use "smbpasswd" to set the root account
password
into Samba.

I have written up a step-by-step procedure for doing the migration based
on my
experiences. I did repeat this procedure a few times from clean Linux
installs to
verify that it was repeatable.

Take a look at:

http://vermeulen.ca/linux-windows-nt.html

Regards,

Stephen



wilson kwok wrote:
> Can anyone help me to solve this problem ?
>  
> Thx !
>   
>> From: [EMAIL PROTECTED]> To: [email protected]> Date: Fri, 28 Dec 2007 
>> 01:15:58 +0800> Subject: [Samba] Samba + LDAP cannot get account from NT4> > 
>> > Hello,> > I do a Migration from NT4 to Samba + LDAP, I already join Samba 
>> to NT4, when I type > net rpc vampire -S NT -U Administrator%nt, the 
>> following error occur,> > [2007/12/28 00:13:16, 0] 
>> rpc_client/cli_pipe.c:cli_rpc_pipe_open_schannel(2673) 
>> cli_rpc_pipe_open_schannel: failed to get schannel session key from server 
>> NT for domain SFA.[2007/12/28 00:13:16, 0] 
>> utils/net_rpc.c:run_rpc_command(151) Could not initialise schannel netlogon 
>> pipe. Error was NT_STATUS_INVALID_NETWORK_RESPONSE> > Thx> 
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