How to block message mail delivery system mailer daemon plesk

The infamous "Mailer Daemon"!

The Mailer Daemon is a system that sends error messages to the administrator of a mail server when there's a problem with delivering an email. In Plesk, you can block these messages by configuring the mail server settings. Here are the steps:

Method 1: Using Plesk's built-in settings

  1. Log in to your Plesk control panel.
  2. Go to Mail > Mail Server.
  3. Click on the Settings button next to the mail server you want to configure.
  4. Scroll down to the Advanced section.
  5. Look for the Error reporting option and set it to None or Minimal.
  6. Click OK to save the changes.

Method 2: Using the mail server's configuration file

  1. Connect to your server using SSH or FTP.
  2. Navigate to the mail server's configuration file, usually located at /etc/postfix/main.cf (for Postfix) or /etc/sendmail.cf (for Sendmail).
  3. Open the file in a text editor and look for the bounce or error settings.
  4. Set the bounce or error settings to no or minimal to disable or reduce the number of error messages sent by the Mailer Daemon.
  5. Save the changes and restart the mail server service.

Method 3: Using a third-party plugin

If you're using a third-party plugin like SpamAssassin or ClamAV, you can configure it to filter out or suppress the Mailer Daemon messages.

For example, in SpamAssassin, you can add the following lines to your spamassassin.conf file:

report_safe 0
report_bounced 0

This will disable the reporting of safe and bounced emails.

Remember to restart the mail server service after making any changes to the configuration files.

By following these methods, you should be able to reduce or eliminate the Mailer Daemon messages in your Plesk mail server.