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Is your business
actually secure?
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We check 7 critical security settings for your business domain — email authentication, SSL, blacklists, and more. Plain English results. No jargon.

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shielddeskhq.com — free business security scanner
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🔒 We only read publicly available DNS records. We never access your servers or store sensitive data.
📧 SPF Record 🛡️ DMARC Policy 🔑 DKIM Signature 🔒 SSL Certificate 📬 MX Records 📊 Email Deliverability 📊 Security Score
7
Checks per scan
$35K
Avg breach cost
1hr
To fix everything
Free
Forever
Initializing scan...
[ ] Resolving domain
[ ] Checking email authentication (SPF)
[ ] Checking DMARC enforcement policy
[ ] Checking DKIM signature
[ ] Checking SSL certificate
[ ] Checking blacklist status
[ ] Generating security report
Security report for
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Email Authentication Checks
Infrastructure Checks
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What we check & why it matters
01 — SPF
Sender Policy Framework
Tells servers which IPs can send email for your domain. Without it, anyone can fake emails from you.
02 — DMARC
Domain-based Auth
The enforcement layer. Tells servers what to do with fake emails — quarantine or reject them.
03 — DKIM
Email Signature
Cryptographic proof every email is genuine and wasn't tampered with in transit.
04 — SSL
Website Certificate
Checks your website shows the padlock. Expired SSL shows "Not Secure" and drives customers away.
05 — MX
Mail Routing
Validates your email routing is properly configured so you can send and receive reliably.
06 — Deliverability
Email Deliverability
Checks whether your DNS configuration maximizes email deliverability and protects your sender reputation with ISPs.