MX routes mail
MX records tell senders where mail for the domain should be delivered. Missing MX records usually mean inbound mail will fail or fall back unpredictably.
● EMAIL AUTHENTICATION DNS
Check the DNS records
that protect your email.
Review MX routing, SPF sender policy, DMARC alignment policy, MTA-STS, and SMTP TLS reporting evidence for a public domain.
Email DNS notes
How to interpret this check
SPF and DMARC reduce spoofing
SPF describes authorized senders. DMARC tells receivers how to handle mail that fails authentication and alignment checks.
DKIM needs a selector
DKIM public keys live below selector-specific names, so a domain-only check cannot prove every DKIM key used by a sender.