For further notes going back to 2017, see "Twenty-plus years on, SMTP callbacks are still pointless and need to die" nxdomain.no/~peter/twenty-plus_years... #spam #smtp #smtpcallbacks #callbacks #email #verification #potatocrime #mashing #stupidity

Twenty-plus years on, SMTP callbacks are still pointless and need to die

For further notes going back to 2017, see "Twenty-plus years on, SMTP callbacks are still pointless and need to die" nxdomain.no/~peter/twenty-plus_years... #spam #smtp #smtpcallbacks #callbacks #email #verification #cybercrime #hacking #stupidity