LDAP Authentication to Active Directory

Hello,

I'm having some trouble getting my Observium config to successfully authenticate with our LDAP (Active Directory) servers.

I suppose I have two problems. 

The first is that I'm not certain that I have the correct ldap entries in config.php and I was hoping somebody could quickly validate these look correct (My goal is to configure TLS but I wanted to get things working over 389 before I go and complicate things with Certs/Groups so that's why this is currently configured this way):

$config['auth_mechanism'] = "ldap"; // default, other options: ldap, http-auth, please see documentation for config help

$config['auth_ldap_binddn'] = "cn=<user name>,ou=services,ou=users,ou=<ou>,dc=<domain>,dc=<domain>";
$config['auth_ldap_bindpw'] = "<password>";

$config['auth_ldap_attr']['uid'] = "sAMAccountName";
$config['auth_ldap_attr']['uidNumber'] = "objectSid";
$config['auth_ldap_attr']['cn'] = "name";
$config['auth_ldap_objectclass'] = "person";

$config['auth_ldap_server'] = "<AD Server Hostname- using FQDN>";
$config['auth_ldap_port'] = 389;
$config['auth_ldap_version'] = 3; # v2 or v3
$config['auth_ldap_starttls'] = FALSE;
$config['auth_ldap_prefix'] = "CN=";
$config['auth_ldap_suffix'] = "DC=<domain>,DC=<domain>";

The second issue I have is where to find logs of LDAP auth failures between Observium and AD.  I've looked in most of the places that I can think of and I can't seem to find anything.

Here are the details of my install: 

Please let me know if I've posed this to the wrong place as I wasn't sure if this is the correct forum for this.

Thank you for your help and support.

Cheers,

Mike