britannica.com

Email security grade B · 80/100

As of 2026-07-19 12:17 UTC

Score breakdown

Policy strictness 30/30

p=reject (full enforcement)

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Alignment mode 10/15

relaxed alignment (default; safer for forwarders)

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Reporting 15/15

both rua (aggregate) and ruf (forensic) configured

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Percent at fail position 10/10

no pct tag in play; your policy applies to all failing mail

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Authentication coverage 10/20

SPF only; both should be present for DMARC to align reliably

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MTA-STS 0/5

no MTA-STS policy published

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TLS-RPT 5/5

TLS-RPT record published

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The other half: lookalike domains

A strong DMARC grade stops attackers spoofing britannica.com directly. It does nothing about typosquat domains (britannica-login.com and friends). Scan for those next.

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