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Troubleshoot mediawiki <-> ActiveDirectory authentication

Last Modified: 2016-06-01

I'm trying to configure a fresh install of Mediawiki 1.26  to authenticate users from an Active Directory server but it simply refuses to allow this software to work properly. I know the AD server works fine as I also configured an instance of Racktables against it with no problems.
Below is the current configs added to /var/www/html/LocalSettings.php:

require_once( "$IP/extensions/LdapAuthentication/LdapAuthentication.php" );
$wgAuth = new LdapAuthenticationPlugin();
$wgLDAPDomainNames = array( "domain.local" );
$wgLDAPServerNames = array( "domain.local" => "dcmaster.domain.local" );

$wgLDAPSearchStrings = array( "domain.local" => "domain.local\\USER-NAME" );
#$wgLDAPEncryptionType = array( "domain.local" => "tls" );
$wgLDAPUseSSL = false;
$wgLDAPUseTLS = false;
$wgLDAPUseLocal = false;
$wgMinimalPasswordLength = 1;

$wgLDAPBaseDNs = array( "domain.local" => "dc=domain,dc=local" );
# Example: If your domain is mydomain.internet.ca then you want to put in "dc=mydomain,dc=internet,dc=ca".

$wgLDAPSearchAttributes = array( "domain.local" => "sAMAccountName" );
$wgLDAPRetrievePrefs = array( "domain.local" => "true" );

$wgLDAPPreferences = array('domain.local' => array( 'email' => 'mail','realname' => 'displayname'));
# This will automatically map the users e-mail address and full name from Active Directory to their account in MediaWiki

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However, Access is not granted and I can't seem to find any logfiles either on the mediawiki server or on the AD server.
While trying to sniff the connection packets I found the following info:

[root@wiki ~]# tshark  -ni any '(host'
<deleted lines>
5 0.001356667 -> LDAP 199 extendedResp(1) (00000000: LdapErr: DSID-0C090FAA, comment: [b]Error initializing SSL/TLS, data 0, v2580) LDAP_START_TLS_OID[/b]

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As far as I know SSL/TLS should be disabled, however it still shows as if trying to authenticate.
I have reached a wall with this since my google-fu skills seem to show nothing similar.
Has anyone had any experience on this?
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