MX
Whether a public mail route was visible.
Panel100
98Determinate
2Indeterminate
- Status
- Published
- Posture denominator
- 98
- Visible9495.9%
- Null MX00%
- Not observed44.1%
Mail trust posture
An aggregate view of the public MX, SPF and DMARC signals observed across the fixed .auDO panel.
Derived analytical State topic
Observation 31 Aug 2026
100 domain fixed panel
Mail trust aggregate published for 31 Aug 2026.
Panel-level evidence
Current Mail trust posture
What was visible across MX, SPF and DMARC in the latest observation.
SPF
What SPF record shape was observed.
Panel100
98Determinate
2Indeterminate
- Status
- Published
- Posture denominator
- 98
- Not observed00%
- Single SPF record8485.7%
- Multiple records00%
- Malformed1414.3%
DMARC
What DMARC record state was observed.
Panel100
98Determinate
2Indeterminate
- Status
- Published
- Posture denominator
- 98
- Not observed11%
- Valid9799%
- Multiple records00%
- Malformed00%
Detailed distributions
Full Mail trust distributions
The full published distributions are shown below, including secondary SPF and DMARC detail.
MX posture
- Status
- Published
- Denominator
- 98
- Visible9495.9%
- Null MX00%
- Not observed44.1%
SPF posture
- Status
- Published
- Denominator
- 98
- Not observed00%
- Single SPF record8485.7%
- Multiple records00%
- Malformed1414.3%
SPF terminal qualifier
- Status
- Published
- Denominator
- 84
- Fail (-all)4148.8%
- Soft fail (~all)3440.5%
- Neutral (?all)44.8%
- Pass (+all)00%
- Terminal all missing56%
DMARC posture
- Status
- Published
- Denominator
- 98
- Not observed11%
- Valid9799%
- Multiple records00%
- Malformed00%
DMARC policy (p)
- Status
- Published
- Denominator
- 97
- None1616.5%
- Quarantine1313.4%
- Reject6870.1%
DMARC subdomain policy (sp)
- Status
- Published
- Denominator
- 97
- None99.3%
- Quarantine44.1%
- Reject1818.6%
- Inherited6668%
DMARC SPF alignment mode (aspf)
- Status
- Published
- Denominator
- 97
- Relaxed9294.9%
- Strict55.2%
DMARC DKIM alignment mode (adkim)
- Status
- Published
- Denominator
- 97
- Relaxed9294.9%
- Strict55.2%
Eligible analytical lenses
Mail trust by cohort
Eligible cohorts are shown separately. Cohorts can overlap, and suppressed cells stay hidden.
A domain may appear in more than one analytical cohort. Cohort membership totals therefore do not sum to the fixed panel size.
Australian government14 domainsView MX, SPF and DMARC posture
MX
14 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 14
- VisibleSuppressedComplementary suppression
- Null MX00%
- Not observedSuppressedSmall-cell suppression
SPF
14 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 14
- Not observed00%
- Single SPF record14100%
- Multiple records00%
- Malformed00%
DMARC
14 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 14
- Not observed00%
- Valid14100%
- Multiple records00%
- Malformed00%
Australian not-for-profit16 domainsView MX, SPF and DMARC posture
MX
15 determinate · 1 indeterminate
- Status
- Published
- Posture denominator
- 15
- Visible15100%
- Null MX00%
- Not observed00%
SPF
15 determinate · 1 indeterminate
- Status
- Published
- Posture denominator
- 15
- Not observed00%
- Single SPF recordSuppressedComplementary suppression
- Multiple records00%
- MalformedSuppressedSmall-cell suppression
DMARC
15 determinate · 1 indeterminate
- Status
- Published
- Posture denominator
- 15
- Not observed00%
- Valid15100%
- Multiple records00%
- Malformed00%
Australian higher education10 domainsView MX, SPF and DMARC posture
MX
10 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 10
- Visible10100%
- Null MX00%
- Not observed00%
SPF
10 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 10
- Not observed00%
- Single SPF recordSuppressedComplementary suppression
- Multiple records00%
- MalformedSuppressedSmall-cell suppression
DMARC
10 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 10
- Not observed00%
- Valid10100%
- Multiple records00%
- Malformed00%
Retail and marketplaces14 domainsView MX, SPF and DMARC posture
MX
14 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 14
- Visible14100%
- Null MX00%
- Not observed00%
SPF
14 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 14
- Not observed00%
- Single SPF recordSuppressedComplementary suppression
- Multiple records00%
- MalformedSuppressedSmall-cell suppression
DMARC
14 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 14
- Not observed00%
- Valid14100%
- Multiple records00%
- Malformed00%
Public interest21 domains · overlapping cohort lensView MX, SPF and DMARC posture
MX
21 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 21
- VisibleSuppressedComplementary suppression
- Null MX00%
- Not observedSuppressedSmall-cell suppression
SPF
21 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 21
- Not observed00%
- Single SPF record1885.7%
- Multiple records00%
- Malformed314.3%
DMARC
21 determinate · 0 indeterminate
- Status
- Published
- Posture denominator
- 21
- Not observed00%
- Valid21100%
- Multiple records00%
- Malformed00%
Derivation, privacy and suppression
How this view is derived
Mail trust posture combines independently observed MX, SPF and DMARC evidence using the versioned Mail Posture derivation. It describes visible public configuration, not organisational effectiveness or compliance.
The browser renders the published aggregate contract. It does not derive Mail posture from raw DNS records or reconstruct suppressed values.
Aggregate contract
mail-posture-aggregate/v1 controls the public aggregate shape and suppression semantics.
Source derivation
mail-posture/v1 is the bounded per-domain derivation from classified MX, SPF and DMARC evidence.
Suppression
Suppressed cohort cells remain explicit as suppressed. A hidden count or share is never rendered as zero, and a whole masked distribution remains visibly masked.
Publication privacy metadata
- Minimum cohort denominator: 10
- Small-cell threshold: 3
- Panel cell suppression: Not Applied
- Cohort suppression: Primary And Complementary
Interpretation boundary
Published limitations
- Counts describe the fixed observed .auDO panel, not the whole .au namespace.
- Cohorts are curated analytical lenses and may overlap; they are not whole-sector assessments.
- Mail Posture v1 describes visible public MX, SPF and DMARC evidence at the observation date.
- Indeterminate evidence reflects insufficient observation evidence and must not be interpreted as absence.
- SPF derivation is intentionally bounded and does not recursively resolve include or redirect chains.
- DMARC policy and tag values describe the visible record and are not a rating of organisational mail-security maturity.
- The aggregate does not establish compliance, security effectiveness, compromise, incident status, organisational intent or risk.
- Small cohort cells may be suppressed to limit inadvertent disclosure of individual posture from aggregate data.
Read the evidence chain