Symptoms
The following message is received from Plesk 360:
Your server server.example.com is unavailable from Plesk 360
We can not reach your server server.example.com. Usually, this happens when a server is removed or turned off but was not disconnected from Plesk 360.
Cause
This is the expected behavior.
The message shows the mentioned server is unavailable from Plesk 360.
Note: Plesk 360 started sending such emails on August 14, 2023. If the server added to Plesk 360 is unavailable for 1 day, the corresponding message will be sent.
The check stops examining the server at all after 14 day.
Resolution
If the server is supposed to be available, please check the following articles for help: