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Email authentication (SPF, DKIM, DMARC)

Track sending domains protected against spoofing and how many are at enforcement.

Open Email authentication (SPF, DKIM, DMARC) in the live, interactive calculator — type your numbers, see the result instantly.

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Cybersecurity & cyber assurance

How it's worked out

  • Enforcement = domains with p=quarantine or p=reject ÷ all domains
  • Includes domains that never send mail
NoteParked domains need a reject policy too, or they become spoofing targets.

Source: RFC 7208 (SPF), RFC 6376 (DKIM), RFC 7489 (DMARC)

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