If I possessed that information in a usable form, I'd be richer than Croesus and would probably be polishing my Nobel Prize right now. Email spam and the availability of easily-abusable open relays are massive problems, and some of the best minds on the planet haven't yet been able to even put a dent in them.
There is of course a cure (rip the Internet out by its roots worldwide), but the cure would kill the patient.
I could do a search for Croesus, but I will openly admit I don't know how rich he/she/it is, and further more not sure who he/she/it is. Sounds Roman, but I really don't know. Forgive me.