I'm fairly new to OM Essentials.  We have it installed on a  new server and it did fine discovering all of our physical servers.

I created an Email Alert Action for those physical servers and had it use SMTP, but now if I unplug a power cable on one of the servers (that I assume OM Essentials is now monitoring), it never sends an alert by email.  I did test the SMTP when I set up the rule and the test came through just fine.

Is this an alert setup issue or another issue?  I noticed that Health Status next to all the physical servers is "?".  

Any help is appreciated.

Thanks.