Validate your DNS records for every email authentication protocol. All checks run in your browser — nothing is sent to our servers.
Validate your DMARC policy, parse all tags per RFC 7489, and get actionable recommendations.
Parse SPF mechanisms, count DNS lookups against the RFC 7208 limit of 10, and detect misconfigurations.
Look up DKIM public keys by selector, verify key sizes against RFC 8301, and check algorithm compliance.
Verify your BIMI record, check SVG logo compliance, VMC authority, and DMARC enforcement prerequisites.
Validate your MTA-STS DNS record, fetch the policy file, and verify MX record alignment per RFC 8461.
Check your TLS-RPT DNS record, validate report destinations, and verify MTA-STS integration per RFC 8460.
Parse and visualize Authenticated Received Chain headers per RFC 8617. Validate chain integrity and diagnose forwarding issues.