Is it possible to receive an email when a node is down or being attacked?
That's a pretty broad question, but you can definitely configure the LEM to send you an e-mail when certain events occur on a node or system. You could try adding the "Send E-mail" action to the "Agent Offline Timeout" rule template we provide with the LEM, and that would alert you when an Agent goes off-line. "Attacked" is a little trickier, since there's a lot of potential attacks.
Thanks. But i don't receive any email when i send a test email to myself from the console.