Symptoms
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Notifications which are set up in Plesk in Tools & Settings > Notifications are not sent.
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In Tools & Settings > Mail Server Settings, Postfix is set up as SMTP server:
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The following records can be found in the file
/var/log/maillog
:postfix[54992]: Postfix is running with backward-compatible default settings
plesk postfix/master[32815]: terminating on signal 15
plesk postfix[55085]: Postfix is running with backwards-compatible default settings
plesk postfix[55085]: See http://www.postfix.org/COMPATIBILITY_README.html for details
plesk postfix[55085]: To disable backwards compatibility use "postconf compatibility_level=2" and "postfix reload" -
Postfix was installed on server before Plesk installation;
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When connected to server via SSH, the configuration file like
/etc/postfix/main.cf.rpmnew
can be found. This file indicates that configuration files were modified before Plesk installation.
Cause
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.
Resolution
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.
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Connect to the server using SSH.
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Add the following line to the file
/etc/postfix/main.cf
:compatibility_level=2
-
Reload Postfix configuration:
# service postfix reload