By State / Tennessee
Tennessee Trucking Email Security
75.9% of active carrier domains in Tennessee have no enforced DMARC — leaving freight operators open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
75.9%
national: 80.1%
p=reject
10.0%
national: 7.5%
Microsoft 365
38.3%
national: 38.1%
M365 + no DMARC (carriers)
1,341
national: 92,822
MTA-STS
3.2%
national: 3.3%
DNSSEC
6.2%
national: 6.1%
Dead domains
274
of 4,802 scanned
Total carriers
5,568
275 with dead domain
Risk bands — Tennessee 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+ | 423 | 384 |
| High | score 50–69 | 1,504 | 1,310 |
| Medium | score 30–49 | 2,275 | 1,953 |
| Low | score 15–29 | 1,051 | 844 |
| Minimal | score <15 | 40 | 37 |
Tennessee vs. national average
See where your own domain stands
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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.