| 1. General Results, most used to calculate the result |
| A | name "204.52.191.254" is ipv4 address, public suffix is not defined
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| A | Good: All ip addresses are public addresses
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| A | Good - only one version with Http-Status 200
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| A | Good: No cookie sent via http.
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| A | Good: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):0 complete Content-Type - header (2 urls)
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| http://204.52.191.254/c/ 204.52.191.254
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| Url with incomplete Content-Type - header - missing charset
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| http://204.52.191.254/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 204.52.191.254
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| Url with incomplete Content-Type - header - missing charset
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| H | Fatal error: No https - result with http-status 200, no encryption
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| H | Fatal error: http result with http-status 200, no encryption. Add a redirect http ⇒ https, so every connection is secure. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop.
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| V | https://204.52.191.254/c/ 204.52.191.254
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| Connect failure - perhaps firewall
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| V | https://204.52.191.254/c/ 204.52.191.254
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| Connect failure - perhaps firewall
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| B | No _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.204.52.191.254
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| 2. Header-Checks |
| U |
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| No https result with http status 2** or 4** (standard-check) found, no header checked.
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| 3. DNS- and NameServer - Checks |
| 4. Content- and Performance-critical Checks |
| A | Good: All checks /.well-known/acme-challenge/random-filename without redirects answer with the expected http status 404 - Not Found. Creating a Letsencrypt certificate via http-01 challenge should work. If it doesn't work: Check your vHost configuration (apachectl -S, httpd -S, nginx -T). Every combination of port and ServerName / ServerAlias (Apache) or Server (Nginx) must be unique. Merge duplicated entries in one vHost. If you use an IIS, extensionless files must be allowed in the /.well-known/acme-challenge subdirectory. Create a web.config in that directory. Content: <configuration><system.webServer><staticContent><mimeMap fileExtension="." mimeType="text/plain" /></staticContent></system.webServer></configuration>. If you have a redirect http ⇒ https, that's ok, Letsencrypt follows such redirects to port 80 / 443 (same or other server). There must be a certificate. But the certificate may be expired, self signed or with a not matching domain name. Checking the validation file Letsencrypt ignores such certificate errors. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
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| A | Info: No img element found, no alt attribute checked
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| A | Duration: 7913 milliseconds, 7.913 seconds
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