DNS Health Scanner
Complete DNS and email security audit for any domain. Runs 13 checks (SPF, DKIM, DMARC, MX, SSL, DNSSEC, CAA, Blacklist, BIMI, MTA-STS, TLSA/DANE, Reverse DNS, Mail Ports) and returns a scored report (0-100, Grade A-F) with actionable fix instructions.
dns
email-security
security
+5
|What it does
Scans any domain and returns a comprehensive DNS and email security report with a score (0-100) and grade (A-F).
13 Checks
- Email Authentication: SPF, DKIM (21 common selectors), DMARC
- Email Deliverability: MX Records, Reverse DNS, Mail Ports, Blacklist (15 DNSBLs)
- SSL/TLS: Certificate validity & expiry, CAA records
- DNS Security: DNSSEC, MTA-STS, TLSA/DANE
- Email Branding: BIMI
What makes it useful
Every issue comes with:
- A plain-English explanation of what it means and why it matters
- Step-by-step fix instructions
- Copy-paste DNS records with your actual domain name filled in
Who it's for
IT admins, agencies, and freelancers who manage domains and want a quick security audit without switching between 5 different web tools.
Free vs Pro vs Business
- Free: 5 core checks (SPF, DKIM, DMARC, MX, SSL)
- Pro ($5/mo): All 13 checks + detailed explanations + fix guides + DNS records
- Business ($9/mo): Unlimited requests, all 13 checks — for teams and agencies managing many domains
PlaygroundUpdated Mar 22, 2026