Overview

Administrators can configure the Items Clean-Out feature which performs automatic user mailbox cleanup older than a specified time period, i.e. 30 days, to save space on the datastore disk.

Kerio Connect mailserver process runs the email account cleanup periodically based on message store size. Autodelete Clean-Out mails can be applied to Trash, Spam, Sent, and All folders (except Contacts and Notes).

The Item Clean-Out is looking at the date of the mails modification/manipulation, i.e. the timestamp when the email was moved to the folder, not the Creation date.

Solution

If you do not want to lose any messages with this clean-out, then archive or backup the datastore first and only then proceed further.

Access to Kerio Connect Administration is required to make any changes

To configure the clean-out feature, multiple settings can be modified as per your requirement:

• Per-Domain settings
• Per-User settings
• Folder limit settings

Per-Domain Settings

1. In the administration interface, navigate to the Configuration > Domains section.
2. Double-click on a domain.
3. On the Messages tab, choose the folders for automatic clean-out and set the number of days.
4. Click OK.
   
   

Per-User Settings

By default, new users inherit settings from their domain. To change the settings for individual users, follow the steps mentioned below:

1. In the administration interface, navigate to the Accounts > Users section.
2. Double-click on a user.
3. Navigate to the Messages tab.
4. In the Items Clean-Out section, select the Use custom settings for this user option.
5. Select the folders for automatic clean-out and set the number of days.
6. Click OK.
   
   

Folder Limit Settings

This works like a scheduled task and does not clean all relevant items at once. By default, it is set up to clean-out only 1000 items per folder at once, so that server performance is not affected. Therefore, the actual clean-out can take a while for large email folders. The steps to change this limit are outlined below:

1. Stop the Kerio Connect server (Windows / macOS/Linux)

2. Navigate to the Kerio Connect installation folder. The defaults are: 

   • Windows: C:\Program Files\Kerio\MailServer

   • macOS: /usr/local/kerio/mailserver

   • Linux: /opt/kerio/mailserver

3. Open the mailserver.cfg file.

4. Navigate to the <table name="MessageStore"> section.

5. Change the value (1000 in the example below) of the variable AutoDeleteFolderLimit, as shown in this example:

   

6. Start the Kerio Connect server (Windows / macOS/Linux)

Note: If the increase in limit leads to server performance issues, you must revert it to the default state.

If after some time/days, you are observing that emails are still not being deleted as per the updated settings, then the next option is to restart the server, which runs the clean-out script when it starts up. When this action happens, the Operations logs would contain entries with the label:

{DELETE} Protocol: SYSTEM, User: $cleanout_agent

Testing

 Emails are being autodeleted based on the specified/updated time period.

Back to Top