Defaults.Exposed › Methodology › v7 registry › DMARC reporting
DMARC reporting
Methodology v7 · canonical ID dmarc-reporting · Email Security · scored · census as of July 28, 2026
Reports who's sending mail as you, so you spot abuse and misconfiguration.
Definition
| Canonical ID | dmarc-reporting |
|---|---|
| Category | Email Security |
| Grade impact | Scored — counts toward the grade |
| Pass | The DMARC record includes an aggregate-report address (rua=mailto:…) so the owner receives spoofing reports. |
| Fail | The DMARC record has no rua reporting address, or no DMARC record exists. |
| Example (passing) | v=DMARC1; p=quarantine; rua=mailto:[email protected] |
No-data rule: when this check couldn't be determined for a domain (timeout, SERVFAIL, redacted
source) it returns N/A and is excluded from that domain's scoring denominator — "couldn't determine"
is never counted as a failure. "Determined absent" is a real fail.
Prevalence across the census
10.2% of graded domains publish a DMARC record with an aggregate-reporting (rua) address (28,008,788 of 275,666,275, as of July 28, 2026).
Census denominator: 275,666,275 graded domains. Aggregates only — never an individual domain's result.
Fix it
Plain-English impact, cost of ignoring it, and step-by-step remediation: defaults.exposed/en/fix/dmarc
Cite this check
Defaults.Exposed, "DMARC reporting (dmarc-reporting)", Grading Methodology v7 (census as of July 28, 2026). https://defaults.exposed/methodology/v7/dmarc-reporting
Permalink: https://defaults.exposed/methodology/v7/dmarc-reporting ·
All 34 checks: v7 registry ·
Machine-readable: checks.json ·
Licence: open data