Free Security Tool

DNS & MX Health Checker

Instantly analyze DNS records (MX, SPF, DMARC) to ensure your domain is properly configured and secure.

Why Check DNS Health?

Proper DNS configuration is crucial for email deliverability and website security. Our checker validates MX, SPF, and DMARC records to prevent email bouncing and spoofing attacks.

Email Deliverability

Missing MX records or invalid SPF/DMARC policies can send your emails straight to spam. Verify your domain is trusted by providers like Gmail and Outlook.

Technical Insights

Get detailed technical insights into A records (IPv4) and mail server configurations to help sysadmins and developers troubleshoot propagation issues.

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Email Validator

Verify email addresses and block disposable email providers.

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WHOIS Lookup

Check domain registration details, ownership, and name servers.

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SSL Checker

Verify SSL certificate validity, expiration, and chain issues.

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SPF Generator

Generate SPF records to authorize email senders for your domain.

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DMARC Generator

Create valid DMARC records to protect your domain from spoofing.

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