About

What it does

Site is OK? is a website infrastructure health checker. It scans a domain for common issues across HTTP, HTTPS, SSL certificates, DNS, email configuration (SPF, DMARC, DKIM, MTA-STS, TLS-RPT), mail server blacklist reputation, domain registration, and security headers — then reports a score out of 100 with prioritized recommendations.

Anyone can run a one-off standard check for free, without an account. A free account lets you save domains to a dashboard, monitor them over time with automated daily checks and uptime monitoring, and receive email alerts when something breaks. Paid plans add more domains, change history, and weekly email reports.

Logged-in users can also run intrusive checks — active probes for publicly exposed sensitive files, backup archives, and open mail server details. They are deliberately limited in scope and impact:

• Registered users only — intrusive checks require a signed-in account and are rate-limited far more strictly than standard checks.
• Read-only probing — the checks send plain GET/HEAD requests to a fixed list of well-known paths and read mail server banners. They never attempt logins, exploitation, fuzzing, or any modification of the target.
• Site health first — requests use generous timeouts, are bounded in count, and back off quickly when the target is slow or unresponsive, so a scan places minimal load on the site and never pushes it beyond normal traffic levels.

Run them only on domains you own or are explicitly authorized to test.

See the Help page for a full user guide.

Legal documents

• Privacy Policy — what data we collect, why, and your rights.
• Terms of Service — the rules for using the service.

Publisher & contact

This service is operated by Lindeas Ltd. — https://lindeas.com.

• Legal & privacy requests: contact@siteisok.com
• Product support: support@siteisok.com

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