By State / Wisconsin
Wisconsin Trucking Email Security
77.0% of active carrier domains in Wisconsin have no enforced DMARC. That leaves 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. 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), which matters for downstream DKIM and MTA-STS validation but is 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.