Email alerts for managed servers (Enterprise)

We have five managed servers running in Enterprise edition, and I need to configure email alerting should one of these serves fail. I've read the manual and each managed server has the option set for 'E-mail me when status of this server is down' in the managed server Edit properties dialog.

This in turn uses the Admin Email settings, BUT that only allows you to specify a mail server, not a recipient for the email. How can I determine who gets the alert? Elsewhere in App Manager there is a windows which allows you to input both a 'source email' (ie AppMgr@motability.co.uk) and a destination mail (ie MyManager@motability.co.uk). How should I configure this?

Thanks,

Ed.
Edward Grigson