{
 "metric": "dmarc-policy",
 "segment": "gb-companies",
 "anchor": "company",
 "label": "UK companies",
 "population": "UK companies",
 "states": [
  "reject",
  "quarantine",
  "none",
  "malformed",
  "absent"
 ],
 "quiet_failure_states": [
  "none",
  "malformed",
  "absent"
 ],
 "measurement": "Tier 0. TXT lookup at `_dmarc.<domain>`; parse the `p=` tag. Denominator: `has_mx`.",
 "why_it_matters": "The flagship quiet failure. `p=none` is *monitor mode* — it publishes a record, generates reports, and instructs receivers to deliver forged mail anyway. It looks like DMARC in every compliance checklist and questionnaire while providing no protection. `malformed` is the same failure by accident.",
 "limits": "A domain may be mid-rollout in `none` deliberately; we measure the state, not intent.",
 "data_tier": "dns",
 "population_predicate": "has_mx",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-17",
  "n": 2597,
  "qf_pct": 79.01,
  "ci": [
   77.41,
   80.54
  ],
  "dist": {
   "reject": 12.4,
   "quarantine": 8.59,
   "none": 27.3,
   "malformed": 0.04,
   "absent": 51.68
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 1293,
   "qf_pct": 76.95,
   "ci": [
    74.58,
    79.17
   ],
   "dist": {
    "reject": 12.61,
    "quarantine": 10.44,
    "none": 25.83,
    "malformed": 0.08,
    "absent": 51.04
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-02",
   "n": 1291,
   "qf_pct": 77.07,
   "ci": [
    74.7,
    79.28
   ],
   "dist": {
    "reject": 12.55,
    "quarantine": 10.38,
    "none": 25.95,
    "malformed": 0.08,
    "absent": 51.05
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-03",
   "n": 1294,
   "qf_pct": 77.13,
   "ci": [
    74.76,
    79.33
   ],
   "dist": {
    "reject": 12.44,
    "quarantine": 10.43,
    "none": 25.81,
    "malformed": 0.08,
    "absent": 51.24
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 2597,
   "qf_pct": 78.94,
   "ci": [
    77.33,
    80.46
   ],
   "dist": {
    "reject": 12.4,
    "quarantine": 8.66,
    "none": 27.22,
    "malformed": 0.04,
    "absent": 51.68
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-10",
   "n": 2597,
   "qf_pct": 79.01,
   "ci": [
    77.41,
    80.54
   ],
   "dist": {
    "reject": 12.44,
    "quarantine": 8.55,
    "none": 27.26,
    "malformed": 0.04,
    "absent": 51.71
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-17",
   "n": 2597,
   "qf_pct": 79.01,
   "ci": [
    77.41,
    80.54
   ],
   "dist": {
    "reject": 12.4,
    "quarantine": 8.59,
    "none": 27.3,
    "malformed": 0.04,
    "absent": 51.68
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/dmarc-policy/gb-companies"
}