Vernon Schryver wrote:
We still get a heck of a lot of spam that claims to be from our own servers and/or users. Thousands of spam blowback (spam forged in our domains bouncing back) too.If you believe as I do that the reason genuine mail forgery (as opposed to using a legitimately owned Hotmail dropbox) fell off dramatically a year or three ago is related to the laws criminalizing header forger, then you don't need any crypto.