Perhaps I am misunderstanding something then. In the remoting_client example.php there are these lines:
//* The URI to the remoting interface. Please replace with the URI to your real server
$soap_location = 'http://'.$_SERVER["HTTP_HOST"].'/ispconfig3/interface/web/remote/index.php';
$soap_uri = 'http://'.$_SERVER["HTTP_HOST"].'/ispconfig3/interface/web/remote/';
What should I be replacing the $_SERVER["HTTP_HOST"] variable with? I've tried both my domain name and the IP where ISPConfig is installed and received page not found errors for both.