---
title: "General Freight Carriers — Email Security Posture | EFROS"
description: "Email-security posture of 169,977 active General Freight motor carriers. 80.6% of domains have no enforced DMARC, 7.4% use p=reject. Free, public, source-cited."
canonical: https://efros.com/research/us-trucking-email-security-index/by-cargo/general-freight/
---

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- /General Freight

By Cargo / General Freight

# General Freight Carriers — Email Security

**80.6%** of active general freight carrier domains have no enforced DMARC. That leaves this segment open to email impersonation, payment-redirect fraud, and cargo theft via phishing.

Edition: 2026-Q2 Segment rank: #1 Carriers: 169,977 Domains: 145,646

By [Stefan Efros](https://www.linkedin.com/in/stefanefros-cyberdefense/), CEO & Founder, EFROS

Updated · May 19, 2026

No enforced DMARC

80.6%

national: 80.1%

p=reject

7.4%

national: 7.5%

Microsoft 365

35.7%

national: 38.1%

M365 + no DMARC (carriers)

39,479

national: 92,822

MTA-STS

3.1%

national: 3.3%

DNSSEC

8.0%

national: 6.1%

Dead domains

9,600

of 145,646 scanned

Total carriers

169,977

9,617 with dead domain

## Risk bands — General Freight 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+ | 13,998 | 12,463 |
| High | score 50–69 | 49,767 | 43,867 |
| Medium | score 30–49 | 68,963 | 58,404 |
| Low | score 15–29 | 26,230 | 20,317 |
| Minimal | score

## General Freight vs. national average

No enforced DMARC 80.6% vs 80.1% national

p=reject adoption 7.4% vs 7.5% national

MTA-STS 3.1% vs 3.3% national

DNSSEC 8.0% vs 6.1% national

## What the General Freight numbers actually mean

**Segment exposure framing.** General freight is the largest single segment and the easiest target for high-volume payment-redirect fraud — a small percentage success rate across a giant pool still pays attacker margins.

**DMARC posture.** The general freightsegment's share of carrier domains with no enforced DMARC sits at **80.6%**, within 0.5 points of the national average. enforced p=reject DMARC adoption tracks the national pool: most domains in this segment either have no DMARC at all or are stuck at the monitor-only p=none policy. At the protective end of the distribution, 7.4% 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 sits below the national rate, which shifts the remediation surface toward self-hosted and Google Workspace estates where DMARC has to be configured at the DNS layer rather than flipped on in a tenant policy. That share is **23.2%** of all general freight 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 3.1%, materially below the threshold a freight payment-redirect attacker would have to clear to be inconvenienced by transport-layer policy. DNSSEC adoption across general freight carriers runs at **8.0%** (vs 6.1% national).

**Risk-band shape.** General Freight's critical and high bands combine to 37.5% 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.** For brokers and shippers running high-frequency general-freight tenders, DMARC verification of every new carrier domain before a first wire is the cheapest fraud control in the stack.

## Compare General Freight with other cargo segments

Segments closest in carrier-count rank to General Freight. Each is scored on the same DNS-derived control set, so the comparison is apples-to-apples.

[### Building Materials Rank #279.6% no DMARC · 87,015 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/building-materials/) [### Large Machinery Rank #378.1% no DMARC · 70,561 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/machinery/) [### Hazardous Materials Rank #474.6% no DMARC · 45,574 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/hazmat/) [### Grain / Feed Rank #579.1% no DMARC · 26,271 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/grain-feed/) [### Motor Vehicles Rank #680.2% no DMARC · 22,079 carriers](https://efros.com/research/us-trucking-email-security-index/by-cargo/motor-vehicles/)

[← Full US Trucking Email Security Index](https://efros.com/research/us-trucking-email-security-index/) [← All cargo types](https://efros.com/research/us-trucking-email-security-index/by-cargo/) [Switch to state view →](https://efros.com/research/us-trucking-email-security-index/by-state/)

## See where your own domain stands

The research is free and self-serve. Run the same public checks on your own domain in about a minute — SPF, DKIM, DMARC, MTA-STS, DNSSEC, and more — and get a scored report by email. No agents, no credentials.

[Scan your domain free →](https://efros.com/tools/security-scan/) [Email security for fleets](https://efros.com/industries/trucking-company-msp/) [Talk to EFROS](https://efros.com/contact/?source=trucking-email-research)

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](https://efros.com/research/us-trucking-email-security-index/).