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| 1. General Results, most used to calculate the result |
A | name "4.255.119.224" 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: destination is https
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A | Good - only one version with Http-Status 200
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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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| https://4.255.119.224/ 4.255.119.224
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| Url with incomplete Content-Type - header - missing charset
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| https://4.255.119.224/ 4.255.119.224
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| Url with incomplete Content-Type - header - missing charset
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B | https://4.255.119.224/ 4.255.119.224
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| Missing HSTS-Header
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N | https://4.255.119.224/ 4.255.119.224
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| Error - Certificate isn't trusted, RemoteCertificateNameMismatch, RemoteCertificateChainErrors
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N | https://4.255.119.224/ 4.255.119.224
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| Error - Certificate isn't trusted, RemoteCertificateNameMismatch, RemoteCertificateChainErrors
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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.4.255.119.224
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| 2. Header-Checks |
F | 4.255.119.224 4.255.119.224
| Content-Security-Policy
| Critical: Missing Header:
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F | 4.255.119.224 4.255.119.224
| X-Content-Type-Options
| Critical: Missing Header:
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F | 4.255.119.224 4.255.119.224
| Referrer-Policy
| Critical: Missing Header:
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F | 4.255.119.224 4.255.119.224
| Permissions-Policy
| Critical: Missing Header:
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B | 4.255.119.224 4.255.119.224
| Cross-Origin-Embedder-Policy
| Info: Missing Header
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B | 4.255.119.224 4.255.119.224
| Cross-Origin-Opener-Policy
| Info: Missing Header
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B | 4.255.119.224 4.255.119.224
| Cross-Origin-Resource-Policy
| Info: Missing Header
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| 3. DNS- and NameServer - Checks |
| 4. Content- and Performance-critical Checks |
| http://4.255.119.224/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 4.255.119.224
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| Fatal: Check of /.well-known/acme-challenge/random-filename has a timeout. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
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A | Good: No https + http status 200 with inline CSS / JavaScript found
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A | Good: Every https result with status 200 has a minified Html-Content with a quota lower then 110 %.
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A | Good: Every https connection via port 443 supports the http/2 protocol via ALPN.
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A | Info: No img element found, no alt attribute checked
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A | Duration: 35020 milliseconds, 35.020 seconds
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