SPF & DMARC Validator
Validate SPF and DMARC records for any domain. Detects syntax errors, soft fails, and missing alignment. Free email-auth checker.
About this SPF & DMARC Validator tool
Misconfigured SPF or DMARC can silently break delivery to Gmail and Outlook. CheckHub parses both records and flags syntax mistakes, soft fails, and alignment issues.
How to use the SPF & DMARC Validator
- Step 1. Enter a domain.
- Step 2. Review the parsed SPF mechanisms and DMARC policy with warnings highlighted.
Frequently asked questions
- What is the difference between SPF and DMARC?
- SPF authorizes sending IPs. DMARC tells receivers what to do when SPF or DKIM fails — quarantine, reject, or none.
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