Notifications which are set up in Plesk in Tools & Settings > Notifications are not sent.
The following records can be found in the file
postfix: Postfix is running with backward-compatible default settings
plesk postfix/master: terminating on signal 15
plesk postfix: Postfix is running with backwards-compatible default settings
plesk postfix: See http://www.postfix.org/COMPATIBILITY_README.html for details
plesk postfix: To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload"
Postfix was installed on server before Plesk installation;
When connected to server via SSH, the configuration file like
/etc/postfix/main.cf.rpmnewcan be found. This file indicates that configuration files were modified before Plesk installation.
Postfix is running in the
backward-compatible mode: on.
Upgrade done by the package manager backed up modified configuration files where backward-compatible mode was disabled and created new clean one.
Note: This article is intended for use by server administrators. In case there is no administrative SSH access to the server, contact the server administrator or server provider.
Connect to the server using SSH.
Add the following line to the file
Reload Postfix configuration:
# service postfix reload