Audit a domain's email DNS
Checks DNS records only, through Google DNS over HTTPS. The A to F grade is a heuristic, not a standard.
Enter a domain and click "Run audit".
About thirty DNS queries run in your browser: MX and its hosts, SPF with its include chain, thirteen common DKIM selectors, DMARC, BIMI, MTA-STS, TLS-RPT and the DNSSEC flag.