Using ADS Ldap from Linux

Hello,
We're about to identify our Linux users against AD/Ldap. Our Linux test server is domain Member, winbind ,kerberos and Samba SSO are working fine.
Next step is to read user attributes from active directory and at this point we suck.

We have created a functional user for ldap queries. In my AD GUI i find this user within the following path.
DOMAIN.COM/BS/fusers/linux_ldap_user

ldap.conf

Any hints to get closer ?