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Explainer: how SPF, DKIM and DMARC stop domain spoofing

Original: SPF lists who may send your email, DKIM signs each message, DMARC says what receivers do when a check fails. You need al

A new explainer sets out how email authentication works together: SPF lists which servers may send mail for a domain, DKIM cryptographically signs each message, and DMARC tells receiving servers what to do when checks fail. The author argues all three are needed so attackers cannot spoof a domain, a concern growing as spoofed email fuels phishing.

Why now: Rising phishing and domain-spoofing attacks keep pushing organisations to configure email authentication correctly.

SPFDKIMDMARC

Open on mastodon →

Evidence

• SPF lists who may send your email, DKIM signs each message, DMARC says what receivers do when a check fails. You need all three so others cannot fake your domain. https:// namedaemon.com/blog/spf-vs-dki m-vs-dmarc-what-each-one-does/?utm_source=mastodon&utm_campaign=nd30 #… · namedaemon

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