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Later on spam filtering relied on analyzing email text, but before that was available there was the blunt instrument of blackholing ISPs that refused to police
by bradleyjg 9y ago
Later on spam filtering relied on analyzing email text, but before that was available there was the blunt instrument of blackholing ISPs that refused to police their users.
That approach could work here.
- rayiner 9y agoI remember Bayesian spam filters being the first widely used ones. But it was a long time ago. It’s not clear to me that carriers would be allowed to do that, especially accounting for situations where VoIP traffic is laundered through a legitimate service (so the entity at the exchange boundary with the end-user carrier is a legitimate one). Could they get around common carrier restrictions by offering that service as opt in? I’m not so sure about that either.