Question 1

What records does an email security check include?

Accepted Answer

An email domain security check usually reviews MX, SPF, DKIM, DMARC, MTA-STS, TLS-RPT, and BIMI records because these records control mail routing, authentication, reporting, and transport security.

Question 2

Can a DKIM checker prove that a domain has no DKIM?

Accepted Answer

No. DKIM records are published under selector names, and selectors are chosen by each mail provider. A checker can test common or supplied selectors, but absence for those selectors is not global proof.

Question 3

Why does DMARC p=none show as a warning?

Accepted Answer

DMARC p=none collects reports but does not ask receivers to quarantine or reject failing mail, so it is useful for rollout but weaker than quarantine or reject for abuse prevention.

Email Security Checker