Overview

After upgrading Kerio Connect to version 9.2.9, one may experience an issue with email signature and images not showing. This article drscribes a workaround for this issue.

Environment

Kerio Connect 9.2.9

Root Cause

Kerio Connect upgrade to version 9.2.9.

Resolution

1. Stop the Kerio Connect service.

2. Navigate to the mailserver or MailServer directory (depending on the Server Operating). The default paths for various Operating Systems are listed below:

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

   • Mac: /usr/local/kerio/mailserver.

   • Linux: /opt/kerio/mailserver.

3. Edit the file mailserver.cfg to change the following variable:

   <variable name="AppendHeaderContentSecurityPolicy">default-src 'self' 'unsafe-eval' 'unsafe-inline' *.kerio.com; img-src * http: https: data:;</variable>.

4. Start the Kerio Connect service.

Validation

Signature and images are showing in the webmail.