Domain & Email Health Check
SPF, DMARC, MX, DNS and optional DKIM selector analysis in one report.
No email address required. Only public DNS records are queried. Reports can be printed or saved as PDF for free.
What this checks
Published public DNS configuration and common problems. A healthy DNS configuration is not a guarantee of message delivery or inbox placement.
Need assistance applying a fix? Contact our IT specialists — entirely optional.
How to use this free Email authentication checker
Email authentication uses SPF, DKIM and DMARC to help receiving servers evaluate sender legitimacy. Enter the domain or URL above and review the returned records and status details. The results reflect the information available when the check runs.
Understanding your Email authentication results
DMARC passes when at least one passing SPF or DKIM identity aligns with the visible From domain.
DKIM selectors are chosen by sending platforms; public DNS does not provide a complete directory of every possible selector.
Need help fixing a problem?
Read our Email authentication support and troubleshooting service, explore other free diagnostic tools, or contact Remote IT Support for optional professional assistance.