[Samba] Samab - LDAP with root certificate

[Bernd Schell]

Hello,
we want to authenticate a Samba 3.0.7 server (on Linux Red Hat Enterprise 3 with update 4) over a root certificate against a Novell LDAP server. We did not find something about this in the HOWTOS.
With smbpasswd * w it is impossible, because the responsible LDAP department does not give us the root password. It's the sama as the global root password. :-)
"ldapsearch" works without authentivication.
Question:
Is there a possibility to import a root certificate in samba? Whenever, how!? Or is there another way? 

Thanks for help!
Bernd