Doesn’t authenticate against LDAP

This plugin USED to work, but it’s been on the blink now for the past 1.5 years. I need to get this working. (If this can’t work, then I need to switch to another plugin real fast.)

I strictly enforced authenticating against LDAP so SimpleLDAP login would not authenticate against the WordPress local database. When I do that, I get a message that says authentication against AD doesn’t happen. Other than that, I get no error message, which leaves me in the dark as to the problem.

Is there some kind of log that can point in the right direction to fix the problem? I don’t have access to the LDAP management console. I only have the LDAP browser which lets me see into the LDAP settings; so, no error messages will be available to me from LDAP.

I don’t set an account suffix as it can’t be used against AD to authenticate. We use just email address of various types.

I take the default settings when offered. Otherwise, I verified with our system admin that settings used. According to him setting are right.

Any help that can be provided would be greatly appreciated. Been going ’round in circle with this for some time.