Customized Dovecot configuration file /etc/dovecot/dovecot.conf is overwritten after Plesk updates

Symptoms

After Plesk updates, customized Dovecot configuration file /etc/dovecot/dovecot.conf is reset to default. The previous version of file is saved as dovecot.conf.dpkg-old.

Cause

Plesk updates may contain new Dovecot packages to deliver security improvements. The default Dovecot configuration file is shipped with the new Dovecot package.

Warning: It is not recommended to customize the main Dovecot configuration file /etc/dovecot/dovecot.conf.

Resolution

Create a new Dovecot configuration file in the /etc/dovecot/conf.d/ directory and add all required customization in it.

1. Connect to the Plesk server via SSH.

2. Create a new file with .conf extension, for example:

   # touch /etc/dovecot/conf.d/my_custom_file.conf

3. Open the file in a text editor and add your custom configuration in it.

4. Restart Dovecot to apply new changes:

   # service dovecot restart