By Cargo / Chemicals
Chemicals Carriers — Email Security
68.8% of active chemicals carrier domains have no enforced DMARC. That leaves 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. 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.