I set up multiping yesterday. It already sent a valid alert. Very valuble. However two of the alerts were sent to cell phones and the message was too long for their displays. The part that was cut-off was the ID of the server that was down.

Could we change the format of the message to be the time, and IP only?

We'll add your name to this request. There are enough interested parties, that this will almost certainly make it into a not-too-distant point release. For an example of how this will work, see PingPlotter 2.60.