Thanks a lot Alon! That was indeed something I forgot. Now at least something else happens 🙂 I do however get this error message:
Retrying (Retry(total=239, connect=239, read=240, redirect=240, status=240)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f1b548e6490>: Failed to establish a new connection: [Errno 111] Connection refused')': /auth.login

I think this still has to do with the ports? It seems not be able to authenticate but I just the correct credentials from the server in my conf-file.