AD is Windows only. There are various directory servers, Novell, Sun, Fedora, OpenLDAP, that run on Linux, but none do everything AD does.
Sounds as if you may have misinterpreted the instructions, is that possible?
Do NOT PM forum members with requests for technical support. Ask your questions on the forum.
"I don't know why there is the constant push to break any semblance of compatibility" --anon