Pricing

from $7.00 / 1,000 results

DNS & DMARC Email Security Checker

Bulk-check domains for email security configuration (SPF, DKIM, DMARC) and other DNS records. Scores each domain's email authentication setup.

Pricing

from $7.00 / 1,000 results

Rating

0.0

(0)

Developer

太郎山田

Actor stats

Bookmarked

Total users

Monthly active users

15 hours ago

Last modified

What does this actor do?

Queries DNS records directly using Node.js's built-in dns module to evaluate email authentication setup. Each domain receives a security score (0-100) and letter grade (A-F) based on industry best practices.

Key Features

📧 Complete email security audit — SPF, DKIM, DMARC, and MX records
📊 Security scoring — 0-100 points with A-F grade
🔍 DKIM multi-selector check — Tests 6 common selectors (Google, Microsoft, etc.)
💡 Actionable recommendations — Specific fix suggestions for each issue
📋 Bulk processing — Check up to 500 domains per run
🪝 Webhook support — Send results to Slack/Discord

Scoring Breakdown

Component	Max Points	What's Checked
MX Records	10	Mail servers configured
SPF	30	Exists + strict policy (-all) + mechanism count
DMARC	35	Exists + enforced policy + aggregate reports + 100% coverage
DKIM	25	Record found + multiple selectors

Grades: A (90+) · B (75+) · C (55+) · D (35+) · F (<35)

Input Example

{
  "domains": ["google.com", "github.com", "example.com"],
  "checkDkim": true,
  "concurrency": 5
}

Output Example

{
  "domain": "google.com",
  "score": { "total": 95, "grade": "A" },
  "spf": {
    "raw": "v=spf1 include:_spf.google.com ~all",
    "allPolicy": "~all",
    "isStrict": false
  },
  "dmarc": {
    "policy": "reject",
    "isEnforced": true,
    "rua": "mailto:mailauth-reports@google.com"
  },
  "dkim": [
    { "selector": "google", "found": true }
  ],
  "mx": [
    { "priority": 10, "exchange": "smtp.google.com" }
  ]
}

Cost

Zero external costs. Uses Node.js built-in DNS resolver — no API keys, no proxies. A run checking 100 domains takes ~15 seconds.

Commercial Ops

Set up .env first:

$cp -n .env.example .env

Cloud Task/Schedule setup (idempotent):

$npm run apify:cloud:setup

Daily reliability checks:

npm run canary:check
npm run contract:test:live

OpenClaw cron commands:

openclaw-cron-commands.md

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