Valid
- v=DMARC1; p=reject; rua=mailto:dmarc@example.com
web validator
DMARC Record Validator
Validate DMARC TXT records for required tags like v=DMARC1 and p=none/quarantine/reject.
Results
Processing…- Status
- Processing...
- Details
- Processing...
- Policy (p)
- Processing...
- Aggregate reports (rua)
- Processing...
- Forensic reports (ruf)
- Processing...
- pct
- Processing...
How to use this validator
- Paste the DMARC record.
- Run validate to check v/p tags, mailto URIs, and pct range.
- If invalid, add missing tags or fix values (e.g., pct), then re-run.
Rules & checks
Requires v=DMARC1 and p=none|quarantine|reject.
rua/ruf should use mailto: URIs (comma-separated).
pct must be between 0-100 if present.
Runs client-side only; no storage.
Inputs explained
DMARC TXT record
Paste the full DMARC TXT value (v=DMARC1; p=...; rua=mailto:...). No DNS queries are made.
When to use it
- QA DNS changes before deployment
- Support teams checking customer records
- Automated validation in ops runbooks
Common errors
- Missing p= policy
- rua/ruf missing mailto: or empty
- pct outside 0-100
Limitations
- Structural validation only; does not check deliverability or DNS propagation.
- Does not verify that mailto mailboxes exist or accept mail.
Tips
- Use p=none when starting monitoring, then move to quarantine/reject
- List multiple mailto URIs in rua for distributed reporting
Examples
Missing policy
- v=DMARC1; rua=mailto:dmarc@example.com -> Invalid (missing p=)
Bad pct
- v=DMARC1; p=quarantine; pct=110 -> Invalid (pct out of range)
Deep dive
This DMARC validator checks v=DMARC1, policy, mailto URIs, and pct range entirely in your browser without DNS lookups.
Use it to catch missing tags or invalid pct before publishing DMARC TXT records.
FAQs
- Do you send DNS queries?
- No. This is structure-only validation in your browser.
Related validators
All validation happens in your browser. No data is sent, logged, or stored.
Structural validation only; does not check deliverability or DNS propagation.