I think the article misses the mark. The #1 problem is spam, but spam is mostly a social issue, not a technical one.
Case in point: 90%+ of my spam is currently delivered by google. Either using fake accounts and/or hacked ones.
That spam passes _all_ the technical solutions we have put in place today: SPF/DKIM/DMARC. Sure, the SMTP protocol isn't that great in today's light, but you think changing the protocol would solve it?
Say hello to whatsapp spam, facebook's messenger spam, and so on...
Case in point: 90%+ of my spam is currently delivered by google. Either using fake accounts and/or hacked ones.
That spam passes _all_ the technical solutions we have put in place today: SPF/DKIM/DMARC. Sure, the SMTP protocol isn't that great in today's light, but you think changing the protocol would solve it?
Say hello to whatsapp spam, facebook's messenger spam, and so on...