DNS Audit scans your domain across 9 security protocols (DMARC, SPF, DKIM, DNSSEC, DANE, MTA-STS, TLS-RPT, CAA, and BIMI) and gives you a 100-point score with specific fixes for every issue. Most domain owners have no idea if their email auth is configured correctly. Misconfigured SPF silently breaks deliverability. Missing DMARC lets anyone spoof your domain. Full audit in seconds, no account required. Includes DMARCbis readiness checks. Free and open source.

Framer — Launch websites with enterprise needs at startup speeds.

Launch websites with enterprise needs at startup speeds.

Hey, I'm Neil, the builder behind DNS Audit. I built this because I kept running into the same problem: domains with email authentication that looked fine on the surface but had subtle misconfigurations that silently broke deliverability or left them wide open to spoofing. Most existing tools check one protocol at a time. I wanted something that checks everything in one pass (DMARC, SPF, DKIM, DNSSEC, DANE, MTA-STS, TLS-RPT, CAA, BIMI) and tells you exactly what to fix and why. A few things I'm proud of: The DMARCbis readiness check. The DMARC standard is getting a major update and most domains aren't ready. DNS Audit flags what you need to change before it matters. The 100-point scoring system. Not just pass/fail, but weighted by actual risk so you know what to prioritize. No account, no paywall, no rate limits. Completely free and open source under MIT. I'd love feedback on what checks you'd want to see added. Try it at dns-audit.com and let me know what you think.

Framer — Launch websites with enterprise needs at startup speeds.

Launch websites with enterprise needs at startup speeds.

DNS Audit

Free DNS security audits in one click

Free DNS security audits in one click