I want: ping server on my PC by it domain name from remote.
I have:
If you are at your home trying to set this up, most likely your PC has a private IP address (10.0.x.x. or 192.168.xx ...). When you set up your DynDNS service you are only pointing to your router. You need to configure your router or PC so that your PC has a static IP address. If you plan on taking your PC off your network and connect it into another more than once or twice I would recommend setting up the router to assign your PC a static IP address. If not you can make your PC have a static IP address in the network settings. Then set up Port Forwarding on the router. Each router has different ways to set this up. look in your manual for your router for the steps required.