By Cargo / Chemicals
Chemicals Carriers — Email Security
68.8% of active chemicals carrier domains have no enforced DMARC — leaving this segment open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
68.8%
national: 80.1%
p=reject
13.3%
national: 7.5%
Microsoft 365
42.3%
national: 38.1%
M365 + no DMARC (carriers)
2,317
national: 92,822
MTA-STS
4.3%
national: 3.3%
DNSSEC
5.9%
national: 6.1%
Dead domains
365
of 8,547 scanned
Total carriers
9,577
365 with dead domain
Risk bands — Chemicals carriers
Carrier counts by risk band (composite email-security pain score). Critical = score 70+; Minimal = score <15.
| Risk band | Score range | Carriers | Domains |
|---|---|---|---|
| Critical | score 70+ | 599 | 576 |
| High | score 50–69 | 2,165 | 2,011 |
| Medium | score 30–49 | 3,846 | 3,491 |
| Low | score 15–29 | 2,422 | 1,954 |
| Minimal | score <15 | 180 | 150 |
Chemicals vs. national average
What the Chemicals numbers actually mean
Segment exposure framing. Chemical freight crosses TSCA, RCRA, and TSCA Section 5 reporting obligations — the email-impersonation risk compounds with chain-of-custody documentation risk.
DMARC posture. The chemicalssegment's share of carrier domains with no enforced DMARC sits at 68.8% — better than the national average by 11.3 points. Chemicals carriers adopt enforced p=reject DMARC at a meaningfully higher rate than the national pool. At the protective end of the distribution, 13.3% of segment domains are at p=reject — the only DMARC policy that actually instructs receivers to drop spoofed mail.
Microsoft 365 surface. Microsoft 365 mailflow adoption runs heavier than the national distribution, which is consequential — every M365 tenant already includes the controls needed to enforce DMARC, so the 2,317 M365 carriers in this segment with DMARC disabled are leaving paid-for protection switched off. That share is 24.2% of all chemicals carriers — a one-flag-flip remediation set that segment-specific MSPs can clear in a single quarter without touching DNS infrastructure.
Transport encryption. MTA-STS adoption sits at 4.3%, materially below the threshold a freight payment-redirect attacker would have to clear to be inconvenienced by transport-layer policy. DNSSEC adoption across chemicals carriers runs at 5.9% (vs 6.1% national).
Risk-band shape. Chemicals's critical-band share is 6.3% versus 8.4% nationally, with the pressure shifting into the high band (22.6% of segment carriers) where one or two control gaps still leave room for impersonation.
Best-practice control for this segment. Chemical shippers should treat carrier email-security verification as part of the same compliance posture that produces the manifest — both are chain-of-custody controls.
Compare Chemicals with other cargo segments
Segments closest in carrier-count rank to Chemicals. Each is scored on the same DNS-derived control set, so the comparison is apples-to-apples.
See where your own domain stands
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Data as of 2026-05-20 from public DNS measurements. Statistics are domain-weighted unless noted. Cargo segment membership is based on FMCSA Company Census cargo flags. Methodology: read the full index.