samba as nt domain member

[Juergen Sandner]

We set up our samba server (1.9.18p7) with security = server.
It works just fine, but...
The samba server still seams to check the password against the
/etc/passwd file, too.
Is there a way to let samba only check the password against the
nt domain controller?

Thank you for your help

Juergen