> Also, if spammers can't forge, so what? They'll just grab the domain > name from the PC they've hijacked and send away or go back to using the > e-mail client on the machine. Once the spammers change their methodology > (which they do all the time to counter anti-spam efforts), these > measures will have little to no effect.
I believe this is the main issue here.
Spammers already have and use the technology to circumvent all this, so they don't even need to invent new tricks.
As long as there are drone armies and unsuspecting "stupid" users, these kind of solutions, although interesting and helpful, are useless to stop actual spam.
Another issue is that non of the people I talked this over with see how this can work unless globally adopted by everyone. An adoption of this system over a few years simply won't work. It needs to be over-night and that's not going to happen.
Gadi Evron.
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