Are you sure? These guys simply search online for email addresses in source codes, webmaster addresses on the whois and so on or try their luck with random emails at custom domains. I bet some guys at *@facebook.com got that email too. A quick search for that shows, it's been sent randomly to other people as well. I haven't checked, but I wouldn't be surprised if the sender was from a country like Iraq or Syria..

/JoNny