By State / Wisconsin
Wisconsin Trucking Email Security
77.0% of active carrier domains in Wisconsin have no enforced DMARC — leaving freight operators open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
77.0%
national: 80.1%
p=reject
10.0%
national: 7.5%
Microsoft 365
40.9%
national: 38.1%
M365 + no DMARC (carriers)
2,976
national: 92,822
MTA-STS
3.8%
national: 3.3%
DNSSEC
4.6%
national: 6.1%
Dead domains
624
of 9,644 scanned
Total carriers
13,274
628 with dead domain
Risk bands — Wisconsin 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+ | 1,032 | 843 |
| High | score 50–69 | 3,792 | 2,563 |
| Medium | score 30–49 | 5,534 | 3,921 |
| Low | score 15–29 | 2,099 | 1,602 |
| Minimal | score <15 | 189 | 91 |
Wisconsin vs. national average
What the Wisconsin numbers actually mean
DMARC posture. Wisconsin's share of carrier domains with no enforced DMARC sits at 77.0% — better than the national average by 3.1 points. Wisconsin carriers adopt the enforced p=reject DMARC policy at a meaningfully higher rate than the national pool. At the protective end of the distribution, 10.0% of Wisconsin domains are at p=reject — the only DMARC policy that actually instructs receivers to drop spoofed mail.
Microsoft 365 surface. Microsoft 365 mailflow adoption is heavier than the national distribution, which is consequential — every M365 tenant already includes the controls needed to enforce DMARC, so the 2,976 M365 carriers in Wisconsin with DMARC disabled are leaving paid-for protection switched off. That share is 22.4% of all Wisconsin carriers — a one-flag-flip remediation set that any regional MSP or in-house IT lead can clear in a single quarter.
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 in Wisconsin runs at 4.6% (vs 6.1% national) — meaningful for downstream DKIM and MTA-STS validation, but still a minority signal.
Risk-band shape. Wisconsin's critical-band share is 7.8% versus 8.4% nationally, with the pressure shifting into the high band (28.6% of state carriers) where one or two control gaps still leave room for impersonation. The composite pain score blends SPF posture, DMARC enforcement, MTA-STS presence, and DNSSEC — so a carrier clusters in the critical band only when several controls fail together. Remediation that flips DMARC to enforcement plus turns on MTA-STS typically moves a carrier two bands down in one quarter.
What this means for buyers and shippers. If you are dispatching freight, settling broker payments, or receiving rate confirmations from Wisconsin-based carriers, the operational exposure is the 77.0%of domains that cannot stop a stranger from sending email in the carrier's name. Payment-redirect and load-redirect fraud rides on exactly that gap. Verifying a counterparty's DMARC posture before a first wire — a 30-second DNS lookup — is the cheapest control in the freight stack.
Compare Wisconsin with other states
States closest in carrier-count rank to Wisconsin. Each is scored on the same DNS-derived control set, so the comparison is apples-to-apples.
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.
Data as of 2026-05-20from public DNS measurements. Statistics are domain-weighted unless noted. State scope is the carrier's FMCSA-registered state. Methodology: read the full index.