docs: remove nonexistent (404) DMARC Analyzer

[DMARC Analyzer](https://www.dmarcanalyzer.com/spf-record-check/) doesn't exist anymore. So I removed it from the docs.
Dieser Commit ist enthalten in:
AragurDEV 2019-01-05 22:19:37 +01:00 committet von GitHub
Ursprung 54404f3393
Commit 9a9e5921eb
Es konnte kein GPG-SchlĂĽssel zu dieser Signatur gefunden werden
GPG-SchlĂĽssel-ID: 4AEE18F83AFDEB23

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@ -72,7 +72,6 @@ Here are some tools you can use to verify your DNS configuration:
- [MX Toolbox](https://mxtoolbox.com/SuperTool.aspx) (DNS, SMTP, RBL) - [MX Toolbox](https://mxtoolbox.com/SuperTool.aspx) (DNS, SMTP, RBL)
- [port25.com](https://www.port25.com/dkim-wizard/) (DKIM, SPF) - [port25.com](https://www.port25.com/dkim-wizard/) (DKIM, SPF)
- [Mail-tester](https://www.mail-tester.com/) (DKIM, DMARC, SPF) - [Mail-tester](https://www.mail-tester.com/) (DKIM, DMARC, SPF)
- [DMARC Analyzer](https://www.dmarcanalyzer.com/spf-record-check/) (DMARC, SPF)
## Misc ## Misc