By Cargo / Large Machinery
Large Machinery Carriers — Email Security
78.1% of active large machinery 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
78.1%
national: 80.1%
p=reject
8.7%
national: 7.5%
Microsoft 365
40.6%
national: 38.1%
M365 + no DMARC (carriers)
17,450
national: 92,822
MTA-STS
3.8%
national: 3.3%
DNSSEC
5.1%
national: 6.1%
Dead domains
3,284
of 60,133 scanned
Total carriers
70,561
3,288 with dead domain
Risk bands — Large Machinery 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+ | 5,569 | 5,021 |
| High | score 50–69 | 20,209 | 17,213 |
| Medium | score 30–49 | 28,654 | 24,456 |
| Low | score 15–29 | 12,193 | 9,636 |
| Minimal | score <15 | 648 | 523 |
Large Machinery vs. national average
What the Large Machinery numbers actually mean
Segment exposure framing. Large machinery freight has long lead times, oversized permits, and project-tied schedules — the cost of a load-redirect attack is the project delay on top of the freight value.
DMARC posture. The large machinerysegment's share of carrier domains with no enforced DMARC sits at 78.1%, better than the national average by 2.0 points. Large Machinery carriers adopt enforced p=reject DMARC at a meaningfully higher rate than the national pool. At the protective end of the distribution, 8.7% 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 17,450 M365 carriers in this segment with DMARC disabled are leaving paid-for protection switched off. That share is 24.7% of all large machinery 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 3.8%, materially below the threshold a freight payment-redirect attacker would have to clear to be inconvenienced by transport-layer policy. DNSSEC adoption across large machinery carriers runs at 5.1% (vs 6.1% national).
Risk-band shape. Large Machinery's critical and high bands combine to 36.5% of segment carriers, close to the national distribution, so remediation prioritization here should follow the same shape as the national program.
Best-practice control for this segment. Industrial shippers moving large machinery should bake DMARC verification into vendor-onboarding alongside permit and insurance verification.
Compare Large Machinery with other cargo segments
Segments closest in carrier-count rank to Large Machinery. 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.