SPF / DKIM / DMARC checker

Checks public DNS records. DKIM requires a selector; try your provider's selector or "default". Results are cached for 10 minutes.

SPF / DKIM / DMARC. Inspects public email-authentication DNS records for a domain. It parses SPF mechanisms and lookup count, DMARC policy tags, and the DKIM record for the selector you provide. Use it before changing outbound-mail settings. Example: domain example.com, selector default.