[Samba] Unable to join new machines to the domain

[Sandra]

I have a samba server configured that is the domain controller of a samba 
domain called PRODESAN.COM.BR. After we had to reinstall the domain 
controller, we are currently unable to join any new machines to the domain. 
Whenever I try to join the domain I get this message on the clients: 

# net join -U root
root's password:
[2007/06/19 14:27:41, 0] utils/net_ads.c:ads_startup(191)
  ads_connect: No results returned
Creation of workstation account failed
Unable to join domain PRODESAN.COM.BR.

On the PDC side I get this: 

[2007/06/19 14:25:27, 2] lib/smbldap.c:smbldap_open_connection(788)
  smbldap_open_connection: connection opened
[2007/06/19 14:25:27, 2] passdb/pdb_ldap.c:init_sam_from_ldap(541)
  init_sam_from_ldap: Entry found for user: root
[2007/06/19 14:25:27, 2] passdb/pdb_ldap.c:init_group_from_ldap(2140)
  init_group_from_ldap: Entry found for group: 513
[2007/06/19 14:25:27, 2] auth/auth.c:check_ntlm_password(309)
  check_ntlm_password:  authentication for user [root] -> [root] -> [root] 
succeeded
[2007/06/19 14:25:27, 2] passdb/pdb_ldap.c:init_sam_from_ldap(541)
  init_sam_from_ldap: Entry found for user: root
[2007/06/19 14:25:27, 2] smbd/reply.c:reply_tcon_and_X(711)
  Serving IPC$ as a Dfs root
[2007/06/19 14:25:28, 0] passdb/pdb_interface.c:pdb_default_create_user(368)
  _samr_create_user: Running the command `/usr/sbin/smbldap-useradd -
w "servproducao$"' gave 9

On my LDAP backend I have this entry: 

gidNumber	1058
objectClass	sambaDomain
objectClass	sambaUnixIdPool
sambaAlgorithmicRidBase	1000
sambaDomainName	prodesan.com.br
sambaNextGroupRid	41001
sambaNextUserRid	41000
sambaSID	S-1-5-21-3756370324-611414431-635963119
uidNumber	1519

The sambaSID is the same that was before the migration. Do I need to set 
this SID somewhere else? 






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