LDAP authorization

[ureman2]

Good afternoon.
I can't do LDAP authentication at all.
The configuration has already been studied. I've tried different options, but I still get "invalid username or password" as output. Please correct me if it's not difficult.
define('K_LDAP_ENABLED', true);
define('K_LDAP_HOST', 'ldaps://srv.jobname.com');
define('K_LDAP_PORT', 389);
define('K_LDAP_PROTOCOL_VERSION', 3);
define('K_LDAP_ROOT_DN', 'CN= examen, OU= SystemUsers, DC=jobname,DC=com');
define('K_LDAP_ROOT_PASS', 'password');
define('K_LDAP_BASE_DN', 'CN= examen, OU= SystemUsers, DC=jobname, DC=com');
define('K_LDAP_FILTER', 'uid= sAMAccountName=user');

$ldap_attr = array();
$ldap_attr['dn'] = 'dn';
$ ldap_attr['user_email'] = 'mail';
$ ldap_attr['user_firstname'] = 'Specified name';
$ldap_attr['user_lastname'] = 'sn';
//$ ldap_attr['user_registrar'] = ";

define('K_LDAP_UTF8', false);
define('K_LDAP_USER_LEVEL', 1);
define('K_LDAP_USER_GROUP_ID', 1);