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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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
Comment on this parameter in your main.cf times and try dan Moch once. Another suggestion would be to change temporarily to qmail, uninstall Postfix, Postfix install then re. Switch back to Postfix. So you should also obtain a clean main.cf. I hope I could help you.