Free tool
Free DMARC record checker
Inspect a domain's DMARC policy, alignment mode and reporting addresses.
Why it matters
What this record proves
DMARC tells receivers what to do when SPF and DKIM fail, and requires the visible From domain to align with the authenticated domain.
- Start new domains at p=none with rua reporting enabled.
- Read a week of aggregate reports before tightening the policy.
- Move to p=quarantine once alignment is clean, then consider p=reject.
- Confirm alignment mode matches how your sequencer sends.
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