I have the very same problem. My first approach was to contact the police, but with no result. Now I'm trying to find out as much as possible about the IP (thanks to hotmails X-Originating-IP) that was used to send the Mail. Just now I'm stuck with slowly responding admins from the university that owns the IP.
As a short recipe: - if there is no such thing as the X-Originating-IP to definitely find out where the mail originated, block Mails with such content and don't waste any more timeon that topic. - if you have such an IP, try to find out whom it belongs to (reverse dns lookup and whois). Then mail to their abuse department and ask for help. They only need to lookup who owned the IP at that time (with dynamic IPs) or who used the computer at that time. If they don't cooperate to well then try the police but don't be to confident in them. - if you have an IP but it belongs to a computer with anonymous accounts you're also stuck. I hope it helps. If you find some other ways please let me know. Florian Streck
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