Changing Active Directory password over LDAP using passwd/ldappasswd/Samba

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http://serverfault.com – I am trying to change the Active Directory (on a Windows 2008 server) from a CentOS 6.2 machine over openLDAP. I have tried passwd, ldappasswd and trying to see if I can do it with Samba without the use of TSL/SSL/SASL. Is this possible? (HowTos)