I use Samba 4 AD account provider (same settigns as with Active Directory)
Under LDAP settings:
The ldap host is:
ldaps://hostname.domain.tld
The ldap port is:
636
(389 if you use LDAP instead of LDAPS)
The ldap password is
your-bind-password
(password of the Samba4 account you created to bind other applications with Samba4)
The ldap base is
dc=domain;dc=tld
(If you only want to search the directory tree in the users OU, add a cn=users; in front.)
The ldap bind is
cn=bindaccount,cn=users,dc=domain,dc=tld
The LDAP main filter is
cn (if you want to log in with This email address is being protected from spambots. You need JavaScript enabled to view it., use sAMAccountName)
The LDAP second filter is
cn
Hope this helps.