email-dns-health
Installation
SKILL.md
Email DNS Health
Language
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Overview
A zero-dependency email DNS health checker that uses dig and jq to audit SPF, DKIM, DMARC, BIMI, MTA-STS, and MX records. It detects email providers, counts SPF DNS lookups against the 10-lookup limit, grades overall email health A-F, and provides actionable fix guidance.
Commands
| Command | Usage | Description |
|---|---|---|
audit |
audit <domain> |
Full email DNS health check with grade |
check-spf |
check-spf <domain> |
SPF validation with DNS lookup counting |
check-dkim |
check-dkim <domain> [selector] |
DKIM key validation (auto-detects selectors) |
check-dmarc |
check-dmarc <domain> |
DMARC policy validation |
detect-provider |
detect-provider <domain> |
Detect email provider from MX/SPF |