Follow along with the video below to see how to install our site as a web app on your home screen.
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As long as you choosed "Send from domain IP addresses and use domain names in SMTP greeting" at your server wide "Mail Server Settings", all is fine and you can ignore the test from for example "mxtoolbox".
most free - eMail - providers offer a decent header, so that you are able to inform yourself, WHY your eMail is declared as spam. Pls. use the corresponding headers for investigations and in case that all DKIM, SPF, DMARC informations are positiv, pls. consider to contact your free - eMail - provider WHY your eMails are still being sent to the SPAM - folders. If you setup all as suggested, there is nothing that should be corrected on your server / Plesk, but you still could experience such a behaviour by free - eMail - providers due to their policies and protections.
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