Domain Scanner

JCPIT’s Free Domain Health Check is an instant public-domain scan for small businesses. It checks common exposure signals such as SPF, DKIM, DMARC, SSL/TLS, DNS records, security headers and basic website reachability, then turns the results into plain-English next steps.

Source: Live DNS, email authentication and public website checks performed by the JCPIT scanner.

What the domain scan checks

• Email authentication — whether SPF, DKIM and DMARC records exist and are usable.
• Website security — HTTPS, TLS certificate health and common security headers.
• DNS and domain signals — nameservers, MX records, DNSSEC-related signals and public domain information where available.
• Public exposure clues — visible issues that can affect trust, email delivery or basic security posture.

How to use the result

The score is a starting point, not a full penetration test or guarantee of safety. Use it to spot obvious public issues first, then decide whether you need help fixing DNS, email authentication, Microsoft 365 security or website controls.

If the scan finds email authentication problems, read the Small Business Guide or Domain Management. If you want the wider business risk picture, start with the Free Cybersecurity Risk Assessment.

Want to know what we check? Preview the example security report.

Frequently asked questions