By State / Connecticut
Connecticut Trucking Email Security
79.2% of active carrier domains in Connecticut have no enforced DMARC — leaving freight operators open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
79.2%
national: 80.1%
p=reject
7.8%
national: 7.5%
Microsoft 365
39.0%
national: 38.1%
M365 + no DMARC (carriers)
1,164
national: 92,822
MTA-STS
3.9%
national: 3.3%
DNSSEC
5.2%
national: 6.1%
Dead domains
183
of 3,867 scanned
Total carriers
4,450
183 with dead domain
Risk bands — Connecticut 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+ | 345 | 327 |
| High | score 50–69 | 1,174 | 1,070 |
| Medium | score 30–49 | 2,027 | 1,677 |
| Low | score 15–29 | 688 | 581 |
| Minimal | score <15 | 33 | 29 |
Connecticut vs. national average
What the Connecticut numbers actually mean
DMARC posture. Connecticut's share of carrier domains with no enforced DMARC sits at 79.2% — within 0.9 points of the national average. enforced p=reject DMARC adoption is roughly in line with the national pool — meaning most Connecticut domains either have no DMARC at all or are stuck at the monitor-only p=none policy. At the protective end of the distribution, 7.8% of Connecticut domains are at p=reject — the only DMARC policy that actually instructs receivers to drop spoofed mail.
Microsoft 365 surface. Microsoft 365 mailflow adoption tracks the national distribution closely, so the 1,164 M365 carriers in Connecticut with DMARC disabled represent the same "paid-for-but-switched-off" pattern that drives the national headline. That share is 26.2% of all Connecticut 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 3.9%, materially below the threshold a freight payment-redirect attacker would have to clear to be inconvenienced by transport-layer policy. DNSSEC adoption in Connecticut runs at 5.2% (vs 6.1% national) — meaningful for downstream DKIM and MTA-STS validation, but still a minority signal.
Risk-band shape. Connecticut's critical-band share is 7.8% versus 8.4% nationally, with the pressure shifting into the high band (26.4% 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 Connecticut-based carriers, the operational exposure is the 79.2%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 Connecticut with other states
States closest in carrier-count rank to Connecticut. 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.