Free diagnostic toolReviewed 2026-08-07By HostWithShery technical editorial

Complete Website Health Check

Check DNS, SSL, redirects, hosting signals, email authentication, HTTP behavior and crawler accessibility in one structured report.

Live tool

Complete Website Health Check

Run the public check first. The explanation below tells you how to interpret and repair the result.

No accountPublic evidence only
Live public check

Enter the domain only. We will test root + www, DNS, HTTPS, redirects, mail and crawler access.

No account · Public configuration only
On this page

Complete Website Health Check: the question this tool answers

Complete Website Health Check answers one focused troubleshooting question: website health check. The live result is designed to tell you whether domain resolution is usable, whether HTTP and HTTPS agrees with it, and whether root and www behavior exposes a second path that can explain the symptom. A healthy result here is not an all-purpose website score; it only describes the business-email DNS and mail authentication evidence this tool owns.

  • domain resolution
  • HTTP and HTTPS
  • root and www behavior
  • DNS records and nameservers
  • SSL certificate and TLS
  • business-email DNS
  • security headers
  • robots, sitemap and canonical

How to read the domain resolution, HTTP and HTTPS and root and www behavior evidence

Start with the value that directly controls the failing service, then use the other signals to confirm or challenge that interpretation. A single record or response can look correct while another hostname, IP family, redirect or mail-authentication path still fails. The tool therefore keeps the raw observed value visible and explains how the signals relate.

  • Domain resolutionVerify domain resolution from the public Internet and compare it with the value the responsible provider says should be live.
  • HTTP and HTTPSRecord the public status, final URL and relevant response headers. A working DNS answer does not prove that the application is serving a genuine website response.
  • Root and www behaviorVerify root and www behavior from the public Internet and compare it with the value the responsible provider says should be live.
  • DNS records and nameserversCompare the delegated nameservers with the servers that actually answer authoritatively; a record edited in a non-authoritative zone has no effect.
  • SSL certificate and TLSTest the hostname actually requested, its certificate dates and SAN coverage, and the TLS handshake. Root and www can serve different certificates.
  • Business-email DNSVerify business-email DNS from the public Internet and compare it with the value the responsible provider says should be live.
  • Security headersVerify security headers from the public Internet and compare it with the value the responsible provider says should be live.
  • Robots, sitemap and canonicalFollow every hop rather than checking only the final page. The conflicting rule is usually visible where the chain changes scheme, hostname or destination repeatedly.

Common complete website health check failure patterns

The most useful warnings are mismatches rather than isolated missing fields. Domain resolution can be absent or stale; HTTP and HTTPS can point somewhere different from the expected provider; and root and www behavior can reveal a second path that behaves differently. If public sources disagree, first decide whether the difference comes from authoritative data, caching, a separate hostname, IPv6, or another protocol layer before editing configuration.

What to change — and what not to change

Change the smallest setting that the evidence proves is wrong. Compare the observed domain resolution with the current value supplied by the responsible provider, save the existing value, make one correction, and retest. Do not replace nameservers, delete unrelated MX/TXT records, disable TLS controls or remove IPv6 simply because Complete Website Health Check shows a warning in another layer. Broad changes can turn one isolated problem into several independent outages.

How HostWithShery runs Complete Website Health Check

The submitted public input is normalized and validated before any server-side request is made. HostWithShery then obtains domain resolution and HTTP and HTTPS using the appropriate public DNS, HTTP, TLS or mail protocol and adds root and www behavior plus DNS records and nameservers where it materially changes the interpretation. URL-based checks are restricted to public destinations, and redirect targets are revalidated instead of being trusted automatically.

Example complete website health check interpretation

Example only: suppose domain resolution returns an expected value, but HTTP and HTTPS points to an older destination while root and www behavior shows a different result for another hostname or network path. The correct conclusion is not “everything is broken.” It is that one public path still disagrees with the intended business-email DNS and mail authentication configuration. The live result uses the domain you enter; this example is never presented as evidence about your site.

When a complete website health check result is inconclusive

This is a public-configuration diagnostic. Network filtering, private control-panel settings, split-horizon DNS, provider-internal state and transient routing conditions can limit what can be confirmed from outside the account. Public diagnostics cannot see private control-panel state, unpublished origin addresses, provider account status or split-horizon/internal DNS. If the remote service times out, blocks automated requests or hides a signal, the result stays inconclusive instead of inventing a provider or configuration. That distinction matters when the next step is a potentially disruptive DNS, SSL or mail change.

How to verify the repair

The public MX/authentication records should match the intended mail provider, required hostnames should resolve, and the relevant SPF/DKIM/DMARC check should no longer show the original failure. Repeat Complete Website Health Check after the change and compare the same domain resolution, HTTP and HTTPS and root and www behavior evidence that exposed the problem. A provider dashboard saying “saved” is not enough when the public Internet still returns the old value.

What to check next if Complete Website Health Check is healthy

If domain resolution, HTTP and HTTPS and root and www behavior now agree but the user-facing problem remains, move to the adjacent layer instead of editing the same setting repeatedly. Use the related diagnostics on this page to test the next plausible cause, and keep the previous result as evidence when escalating to a hosting, DNS or email provider.

Technical references

These primary standards and provider documents are used to verify the behavior described on this page. Provider dashboards can change, so use the current official value for tenant-specific DNS records rather than copying an example from another account.