iLO 4 1.20 seems to have introduced this functionality on Proliant Gen8 systems, though it remains to be seen what sort of alerts it will actually send. There, at least, there's no way to change the sender, use TLS, or specify the remote port to connect to. I had to hack workarounds into our exim config to work around both this and the way that it isn't a well-behaved SMTP client. I entered a ticket with HP but so far the offshored frontline doesn't even understand the problem.
