Network & DNS
Domain Email Health Checker
Run an instant DNS email deliverability audit checking MX, SPF, DMARC, and MTA-STS records in parallel using secure DNS-over-HTTPS queries.
Results
What the result means
Submit any corporate or personal domain to perform a comprehensive, automated deliverability diagnostic across all foundational DNS records. The audit fires simultaneous DNS-over-HTTPS queries to Cloudflare resolvers to test mail exchange (MX) presence and priority routing, verify the publication of a single RFC-compliant SPF TXT record, assess DMARC policy enforcement strength and reporting mailbox presence under the _dmarc subdomain, and inspect MTA-STS transport encryption configurations. It synthesizes the results into clear visual indicators and actionable recommendations so administrators can identify email delivery vulnerabilities before customer communications fail.
Related tools
Guides
Questions
What records does the email health check inspect?
It inspects MX records for mail receiving, SPF TXT records for authorized sending servers, _dmarc TXT records for authentication policy, and MTA-STS records for transport encryption.
Why does my domain show a warning for DMARC p=none?
p=none enables monitoring but provides zero protection against email spoofing. Review aggregate reports before moving to quarantine or reject.
Does this health check store my domain query?
No. Queries are dispatched directly from your browser to Cloudflare public DNS-over-HTTPS without passing through or being recorded on PageUtil servers.