Jonathan Penn Full Quotations

Sender authentication solutions are very slow to reach maturity, and that is simply a shame on the ISPs, who have not been aggressive enough in developing the specs and deploying them in full force.

However, for ISPs especially, the spam problem is not fully solved by any means. They still spend a lot of money on R&D in a cat-and-mouse game with spammers, as well as the infrastructure investment to deal with the inbound volume that gets rejected at or near the gateway.