This free domain health checker scans your DNS records to validate SPF, DKIM, and DMARC configuration in one place. These three email authentication protocols work together to verify that messages sent from your domain are legitimate, protecting your brand from spoofing and phishing attacks.
Enter any domain above to get an instant health report. The checker grades your overall email authentication posture, identifies missing or misconfigured records, and highlights issues that could hurt deliverability or leave your domain vulnerable. Properly configured email authentication is now required by major providers like Google and Microsoft for reliable inbox placement.
