Email DNS Check Tool

Verify your complete email DNS stack (MX, SPF, DMARC, and DKIM) instantly to troubleshoot delivery and spam issues.

How to troubleshoot email delivery and spam issues

If your emails are bouncing or landing in the spam folder of Gmail or Outlook, your email DNS configuration is likely incomplete. Enter your domain above to run a comprehensive check on the four pillars of email routing and authentication.

Interpreting your Email DNS results

  • MX (Mail Exchange): Ensure your domain has valid MX records with correct priorities. If this is missing, you cannot receive emails.
  • SPF (Sender Policy Framework): Check if your SPF record exists and strictly contains the IPs/services allowed to send emails on your behalf. Warning: Having multiple SPF records will cause instant failures.
  • DKIM (DomainKeys Identified Mail): If you entered a selector, verify that the cryptographic key is correctly published. Broken DKIM keys will break email signatures.
  • DMARC (Domain-based Message Authentication): Ensure you have a DMARC policy (p=none, quarantine, or reject) published at the _dmarc subdomain to tell receivers how to handle unauthenticated mail.

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