What a DMARC record does
DMARC tells receiving mail servers what to do when mail fails SPF or DKIM alignment. The policy can monitor only, quarantine suspicious mail, or reject it.
Free outbound tool
Free DMARC Checker
Look up a domain's DMARC record and interpret policy, alignment, reporting, and enforcement settings.
live
DMARC checker
Live TXT lookup with plain-English interpretation of p=none, quarantine, reject, rua, and pct.
Policy
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Run a lookup
Alignment
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s = strict, r = relaxed
DMARC TXT
0 records_dmarc.company.com
No record returned
What this tool should cover
A useful DMARC lookup should explain records, policy tags, reports, compliance, and next steps after a failed check.
DMARC tags to review
The most important tags are p for policy, rua for aggregate reports, pct for rollout percentage, adkim and aspf for alignment strictness, and fo for forensic reporting preferences.
What to do after the lookup
If no record exists, publish a basic monitoring record. If policy is p=none, review reports before moving to quarantine or reject. If records fail validation, fix syntax before changing enforcement.
Frequently asked questions
What is a DMARC record?
A DMARC record is a DNS TXT record at _dmarc.yourdomain.com that defines how receivers handle mail that fails authentication alignment.
What does p=none mean?
p=none means DMARC is monitoring only. It can collect reports, but it does not ask receivers to quarantine or reject failing mail.
Should I use quarantine or reject?
Move to quarantine or reject after confirming legitimate mail passes SPF or DKIM alignment. Jumping too fast can block real email.
Do cold email domains need DMARC?
Yes. DMARC is now a baseline trust signal for professional sending and helps prevent spoofing of your domain.
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