Thats what I have on the server for HostingRefuge now
Great script and it checks every 90 seconds and alerts me of any downtime.

I would like it even more if it make it more obvious what the total uptime is for the server as well as show how long the server was down when it sends the recovery alert.
That would be great information to have just at hand.

It was already all setup for me by the company I bought the dedicated from and Im more than happy with it