No, you have to use an address which is availible through your BES. I just thought how to implement an own monitoring system. Otherwise you wont get a reply.
However, you could use the blackberry simulator on a PC to create a virtual blackberry which is always online (connected through the desktop software to the BES). That should give you the information if the mailserver (exchange) is connected succesful to the BES, and, that the BES is able to deliver a message to the device.
In case you dont know about the "confirm" message:
send a message with the subject: <confirm> to a BB.
more here: BlackBerry Message Receipt Confirmation Tool
the bbsrptest will give you the IP address of the SRP server, and make a short check of the connectivity. Dont know if you can use the time, the utility uses for execution as a measure of quality.