Free DMARC, SPF & DKIM DNS Record Lookup Tools

Validate Email Authentication Records in Seconds

Email authentication depends on properly configured DNS records. These free tools let you lookup and validate your domain's DMARC, SPF, and DKIM records instantly. Each check parses the raw DNS response, validates syntax and policy structure, and highlights configuration issues that can impact deliverability or weaken domain protection.

Whether you are diagnosing authentication failures, preparing to move to enforcement, or confirming a new deployment, these tools provide clear technical insight without requiring manual DNS inspection.