Notification - Ping request

Okay guys, right now I have a notification that is linked to an email account which is then re-directed to xxx-xxx-xxxx@txt.att.net. This inturn messages me and the other people whom i’ved added to this list a notification whenever one of our mikrotiks go down (cannot ping the device). I want to have the same type of thing but with a server. Say if the dude cant ping my Domain Controller send a message via the same method. When I right click on the desired device and go to the polling tab and turn on “use notifications” and use the same notification i use for my routers i dont have any luck. I turn off my wifi (which would make the device not pingable but I never receive a message.