[Samba] Problems search using ldapusersearch + Samba4 (v4.4.4)

[Gabriel O. Franca]

Good afternoon friends,

I am implementing squid + squidguard the pfsense authenticating samba 4 
version 4.4.4

And always I get this message in squidguard logs.

2016-06-20 17:30:55 [75446] (squidGuard): ldap_simple_bind_s failed: 
Strong(er) authentication required
2016-06-20 17:30:55 [75446] Added LDAP source: administrator
2016-06-20 17:30:55 [75446] (squidGuard): ldap_simple_bind_s failed: 
Strong(er) authentication required
2016-06-20 17:30:55 [75446] Added LDAP source: administrator
2016-06-20 17:30:55 [75446] (squidGuard): ldap_simple_bind_s failed: 
Strong(er) authentication required
2016-06-20 17:30:55 [75446] Added LDAP source: administrator
2016-06-20 17:30:55 [75446] source not found
2016-06-20 17:30:55 [75446] no ACL matching source, using default

The message happens when I put this filter ldap search:

ldapusersearch 
ldap://172.16.1.4:3268/DC=cmc,DC=corp?sAMAccountName?sub?(&(sAMAccountName=%s)(memberOf=CN=grp-ilivre%2cCN=Users%2cDC=cmc%2cDC=corp))

To take a doubt did the same procedure by accessing an AD 2008R2 and it 
worked.

the squidguard can not do a search on the Samba LDAP base and therefore 
can not identify users within the Samba4 groups.

They know how I can change this search or a way to make it work?

IPC: password I'm using to authenticate: qBo%23or%Fasesee that it passes 
the safety criterion of Samba4 passwords

Regards,

Gabriel Franca