Apparently 71% of email traffic globally is spam. The usual MO is the spammer finds an open relay, does a cheap dump & run, and your YouTube video buffers while the networks deal with this crap.
So my idea is pretty simple; if that amount of email is spam, drop 3/4 emails. A legitimate user getting a bounce message will try again. A spammer has already long gone. This reduces their business model to a 25% chance of getting caught in your spam filter regardless.
No doubt the Universe will build a bigger idiot, but if this is sufficient to starve them and force them to move on, job done!
