Plesk Support just closed my ticket.
The problem was that "firewalld" was enabled and randomly was blocking access to Apache and my mail.
Plesk suggested disabling "firewalld" and this fixed all the server issues.
Everyone, thanks for the support!
@moderators: You can close this topic.
Plesk was giving an Update error. So first thing was to reboot the server.
Can I ask how to check this?
Or should I buy the Plesk Support like @Rasp is suggesting?
Problem Starts:
- The problem started when I normally restarted my server. No changes (by me) were done before that. Server was running for more than a year.
Problems:
- When (standard) Nginx Proxy Mode is enabled, ALL websites hosted in Plesk are giving a 504 Timeout Error
Log: Nginx Error...