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Spammers are better at SPF, DKIM, and DMARC than everyone else

(toad.social)
429 points pabs3 | 1 comments | 25 Mar 25 08:14 UTC | HN request time: 0s | source
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badmintonbaseba ◴[25 Mar 25 11:21 UTC] No.43469939[source]▶
Naively I thought that one value proposition of SPF, DKIM and DMARC is that reputation shifts from based on IP to be based on domain, once you set these up correctly. So as long as you can maintain a good reputation for your domain and have SPF, DKIM and DMARC correctly set up, then you can host your SMTP server at any IP and your emails will get delivered.

I wonder why it doesn't work this way.

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1. artee_49 ◴[25 Mar 25 14:23 UTC] No.43471724[source]▶
It does work that way, but IP reputation is a thing as well so you need to keep that in mind. IPs need to be "seasoned" and "trusted" as well as domains.

This is how email-as-infra works, you're sending from a shared pool of their ips and they sign your emails with DKIM and you'll have SPF set up as well on your own.