By State / Maine
Maine Trucking Email Security
81.0% of active carrier domains in Maine have no enforced DMARC — leaving freight operators open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
81.0%
national: 80.1%
p=reject
7.4%
national: 7.5%
Microsoft 365
35.2%
national: 38.1%
M365 + no DMARC (carriers)
541
national: 92,822
MTA-STS
4.4%
national: 3.3%
DNSSEC
4.3%
national: 6.1%
Dead domains
125
of 1,954 scanned
Total carriers
2,664
125 with dead domain
Risk bands — Maine 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+ | 239 | 207 |
| High | score 50–69 | 910 | 575 |
| Medium | score 30–49 | 1,026 | 777 |
| Low | score 15–29 | 346 | 256 |
| Minimal | score <15 | 18 | 14 |
Maine vs. national average
What the Maine numbers actually mean
DMARC posture. Maine's share of carrier domains with no enforced DMARC sits at 81.0% — within 0.9 points of the national average. enforced p=reject DMARC adoption is roughly in line with the national pool — meaning most Maine domains either have no DMARC at all or are stuck at the monitor-only p=none policy. At the protective end of the distribution, 7.4% of Maine 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 20.3% of all Maine 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 — the encrypted-transport policy that prevents DNS-downgrade interception — runs above the national rate, but the absolute floor is still under 9%, well short of where freight payment flows should sit. DNSSEC adoption in Maine runs at 4.3% (vs 6.1% national) — meaningful for downstream DKIM and MTA-STS validation, but still a minority signal.
Risk-band shape. 9.0% of Maine carriers sit in the critical risk band (score 70+) — above the national share of 8.4% — meaning a disproportionate cluster carries simultaneously broken SPF, missing or monitor-only DMARC, and no MTA-STS. 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 Maine-based carriers, the operational exposure is the 81.0%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 Maine with other states
States closest in carrier-count rank to Maine. 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.