Symptoms
-
Plesk notification emails not sent to Plesk administrator
external mailbox -
/var/log/plesk/panel.log
file contains the following:ERR [panel] '""' is not a valid hostname for the email address:
Cause
Email address misconfiguration.
Resolution
-
Go to Plesk > My Profile, rename admin email address, click Apply and then rename it back to original, and click Ok