Analyze Your Domain'sSecurity Posture
Complete domain security visibility in one unified view. SPF, DMARC, DKIM, SSL/TLS, DNSSEC, and security headers, all analyzed instantly with actionable recommendations.
Free Domain Security Tools
Run a full scan or use our individual checkers: verify your SPF records, validate your DMARC policy, check DKIM signatures, inspect your SSL/TLS certificate, confirm DNSSEC validation, and analyze your HTTP security headers. Validate SPF syntax, look up DKIM records, run an email compliance check, or test for the Office 365 spoofing vulnerability.
One Scan. Complete Visibility.
Stop juggling multiple tools. Get a comprehensive security assessment of your domain's email authentication, encryption, and web security. All from a single scan.
Email Authentication
Validate SPF, DMARC, and DKIM records to prevent email spoofing and protect your brand.
SSL/TLS Security
Verify certificate validity, protocol versions, and cipher configurations in real-time.
Security Headers
Check HSTS, CSP, X-Frame-Options, and other critical HTTP security headers.
DNSSEC Validation
Ensure DNS responses are cryptographically authenticated and tamper-proof.
DKIM Signatures
Verify email integrity with cryptographic signature validation and key analysis.
Unified Reporting
Get all security metrics in one view with prioritized, actionable recommendations.
Common Issues & Fixes
Step-by-step fixes for the most common DNS and email authentication errors.
Setup Guides & Reading
Provider-specific setup walkthroughs and deep-dive articles on email security.