By State / South Carolina
South Carolina Trucking Email Security
79.2% of active carrier domains in South Carolina 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
8.2%
national: 7.5%
Microsoft 365
37.3%
national: 38.1%
M365 + no DMARC (carriers)
967
national: 92,822
MTA-STS
3.6%
national: 3.3%
DNSSEC
7.5%
national: 6.1%
Dead domains
242
of 3,577 scanned
Total carriers
4,191
245 with dead domain
Risk bands — South Carolina 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+ | 311 | 290 |
| High | score 50–69 | 1,232 | 1,045 |
| Medium | score 30–49 | 1,756 | 1,438 |
| Low | score 15–29 | 618 | 537 |
| Minimal | score <15 | 29 | 25 |
South Carolina 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.