samba - Jan 2005 - Users with changed passwords can't log on remotely (but can locally)

(I submitted this last week, but hopefully someone who knows the 
intricacies of secrets.tdb and machine migrations will read this ...)

I migrated a complete Samba configuration from an old server to a new 
one, including the entire /etc/samba directory and all user accounts. 
At first, no clients were aware that anything had changed.  But when I 
changed the passwords of two users they suddenly couldn't connect. 
Doesn't matter whether it's the old or new password - Samba rejects it 
as invalid.  I even tried to change the passwords back to what they 
were, with no success.  Oddly, they can both connect fine from the 
server itself when I do this:

  smbclient -L 127.0.0.1 -U username
  Password:
  ...

But when I issue the same command from a remote machine, it fails:

  smbclient -L servername.domain.com -U username
  Password:
  session setup failed: NT_STATUS_LOGON_FAILURE

Local OK, remote bad.  It boggles the mind.  Here are some things I've 
tried:

- I made sure that the UIDs all match.

- I made sure that the new server has the old server's local SID, and 
that the users' SIDs matched the machine SID.

- I disabled the firewall.

- I made sure the old server is off.

So this really is a case of Samba rejecting a login for a remote machine 
but allowing the same login locally - but only for users with changed 
passwords.  It's version 3.0.2a, which came with Yellow Dog Linux. 
I'm guessing it's something in the secrets.tdb database, though when I 
delete the database and Samba recreates it, the problems are not solved. 
  Anyone ever seen anything like this?

Thanks in advance,
Ed

-- 

:: Ed Holden
:: Administrator, Research Information Systems
:: McLean Hospital
:: Tel: (617) 855-2822
:: Web: http://research.mclean.harvard.edu/ris


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Ed Holden wrote:
> I migrated a complete Samba configuration from an old server to a new 
> one, including the entire /etc/samba directory and all user accounts. At 
> first, no clients were aware that anything had changed.  But when I 
> changed the passwords of two users they suddenly couldn't connect. 
>  Anyone ever seen anything like this?

Could you try joining to domain (I assume you have some PDC?) from the 
workstation the user can't log in once again?

Maybe there are troubles with machine passwords, joining domain once 
again should solve it, or there are two or more machines in LAN with the 
same netbios name etc.


Tomek