Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread: CentOS2Alma discussion
Its a simple gmail 5.7.1 meaning your Mail-server is not considered reliable/safe.
This is a more complex requirement in configuration, mostly due to Google. Most likely you can mail to some others, but google doesnt accept mailers, which dont comply to their minimum requirements.
Or in other words: gmail considers your email as spam.