[Samba] Problems adding Win clients to domain

Wed Aug 23 10:57:07 GMT 2006

I'm not able to add Win clients to my domain anymore. I receive an  
error on the PC (2000 or XP):

"The following error occurred attempting to join the domain "[DOMAIN]":
Logon failure: unknown user name or password."

But I am able to log on to the server when accessing shares and  
printers. This error message only appears when joining the domain.

And on the Mac OS X 10.4.7 (Samba 3.0.10) server I get the following  
in my log.smbd:

[2006/08/22 11:32:03, 2] /SourceCache/samba/samba-92.20/samba/source/ 
auth/auth.c:check_ntlm_password(360)
   check_ntlm_password:  authentication for user [tmpadmin] ->  
[tmpadmin] -> [tmpadmin] succeeded
[2006/08/22 11:32:03, 2] /SourceCache/samba/samba-92.20/samba/source/ 
lib/module.c:do_smb_load_module(63)
   Module '/usr/lib/samba/vfs/darwin_acls.so' loaded
[2006/08/22 11:32:04, 2] /SourceCache/samba/samba-92.20/samba/source/ 
rpc_server/srv_samr_nt.c:_samr_lookup_domain(2531)
   Returning domain sid for domain [DOMAIN] ->  
S-1-5-21-457614760-3765950544-3595693477
[2006/08/22 11:32:04, 2] /SourceCache/samba/samba-92.20/samba/source/ 
rpc_server/srv_samr_nt.c:access_check_samr_object(93)
   _samr_open_domain: ACCESS DENIED  (requested: 0x00000211)
[2006/08/22 11:32:04, 2] /SourceCache/samba/samba-92.20/samba/source/ 
rpc_server/srv_samr_nt.c:_samr_lookup_domain(2531)
   Returning domain sid for domain [DOMAIN]  ->  
S-1-5-21-457614760-3765950544-3595693477
[2006/08/22 11:32:04, 2] /SourceCache/samba/samba-92.20/samba/source/ 
rpc_server/srv_samr_nt.c:access_check_samr_object(93)
   _samr_open_user: ACCESS DENIED  (requested: 0x000000b0)
[2006/08/22 11:32:04, 2] /SourceCache/samba/samba-92.20/samba/source/ 
rpc_server/srv_samr_nt.c:access_check_samr_object(93)
   _samr_open_user: ACCESS DENIED  (requested: 0x00000090)
[2006/08/22 11:32:04, 2] /SourceCache/samba/samba-92.20/samba/source/ 
smbd/server.c:exit_server(595)
   Closing connections

where DOMAIN is my domain name and tmpadmin is a user account with  
all privileges.

I've been googling (oops, I'm not sure I can say that :-)) and  
reading all the documentation I could find, but without any luck.

What's strange is that when the server was installed I was able to  
add a lot of clients. Then I've probably done something wrong and now  
I'm getting into trouble. So, what have I been doing?

Editing /etc/smb.conf
    * Adding the line:  logon home = \\[FILESERVER]\%U
    * Removing the line: #logon path = \\%N\profiles\%u

Adding a group mapping with the command net
    net groupmap add ntgroup="Domain Admins" unixgroup="admin"  
type=domain
    net groupmap cleanup
but also reverted back to default group mappings.

Reconfigured the Windows service by removing /var/samba and /etc/ 
smb.conf. Didn't help.

Editing /etc/openldap/slapd.conf:
   * Adding a schema from ldapuserdata ( a Squirrelmail plug-in) but  
has removed this schema now.

Are there other services/configuration files I have to look at?

Do you have ANY tips? This is starting to get urgent for me now!

I've now tried a couple of other things without success:

I run this command to try to add the server which is the PDC to the  
domain:

    net rpc join -S [SERVER] -Uroot%[password]

Today that command gave me the following output:

[2006/08/23 09:23:07, 0] /SourceCache/samba/samba-92.9/samba/source/ 
utils/net_rpc_join.c:net_rpc_join_newstyle(279)
   error setting trust account password: NT_STATUS_ACCESS_DENIED
Unable to join domain [DOMAIN].

Yesterday I got a bit more interesting error message including

decode_pw_buffer: incorrect password length (945999123).

After searching the web I found two references regarding mac is x  
server and samba about this:

At AFP548:
http://www.afp548.com/forum/viewtopic.php?showtopic=11873

There were a couple of suggestions:

1. Change the server from PDC to Single Server and back again. In a  
way I've tried that by removing the /etc/smb.conf and /var/samba.

2. Set the password of the directory administrator a couple of times  
and then it should work. Tried that but it didn't work for me.

At this mailing list in August 2005:

3. A tip from Michael Bartosh: /usr/bin/opendirectorypdbconfig -c  
set_authenticator -r admin-name -p  xxxxx -n /LDAPv3/127.0.0.1
    Tried it, but didn't work.

At the moment I believe it may be the file

     /var/db/samba/secrets.tdb

since I didn't delete it when I reconfigured Samba. I was also  
surprised that the SID of the Samba domain didn't change when I  
reconfigured Samba.

My question is then: Is it safe to rename this file and and then  
start Samba again? Or will the domain loose it SID and I have to add  
all the Win clients again? But if I run the command:

    sudo net getlocalsid [DOMAIN]

before the renaming and then run the command:

    net setlocalsid SID

after. Will this procedure do it?

Regards,

Lars-Gunnar Persson