Email DNS Health

Check email DNS publication for MX, SPF, DMARC and a specified DKIM selector. Review records and lookup limitations with My Secure Labs.

How to use Email DNS Health

Enter a domain and optionally the DKIM selector supplied by your email provider. Browser verification is shared with the other tools.

Understanding the results

Found means a DNS record was returned, not that email authentication passed. Review duplicate SPF and DMARC records. DKIM checks only the supplied selector; DMARC checks the exact domain without organizational-domain fallback. No emails are sent, and mailbox delivery, SPF authorization and DKIM signatures are not tested.