All my nodes have a custom property called DeviceContactEmail which I specify a email address I want a alert to go to.
When I use the out of the box advanced alert "alert me when any hardware component goes into a warning or critical state" and I use either variable {DeviceContactEmail} or {node.DeviceContactEmail} the email fails to send. The test log reads "at least one recipient is required, but none were found."
Any ideas on how to correct?