Quote:
Originally Posted by directfiesta
Make email a paying service ( like 0.01 each send, with an approved account ) and you will see it go down ...  |
There's been a proposal to make sending spam "expensive" but with a different currency - CPU power. The receiving server will not accept the mail until the sending server solves a challenge problem that is sufficiently computationally complex that it takes a relatively long amount of time... so the server may only be able to send 5 mails a second instead of 500.
Not sure it would work in the real world though, the spammers would find some way to offload the calcs. Maybe through their botnet, or embedded into javascript on a high traffic site...
It's also something that wouldn't work until EVERYONE supported it, but there's no real incentive to change over. Just like IPv6.