Have successfully installed networked printers on my new Leopard Xserve. Can print from the server. In Services - have enabled Print service and sharing via IPP, LPR, SMB, AppleTalk. When I install printer on a client (going through the server so hopefully I can enforce print quotas), I get an error message saying the server is unavailable. Server is up and can be pinged, but the print ports are not listening. How do I open the print ports on the Xserver running Leopard?