Enabling and disabling DMARC message authentication

To enable or disable DMARC Mail Sender Authentication:

1. In the main window of the program web interface, open the management console tree and select the Settings section and Protection subsection.
2. In the External Services section, click the Enable DMARC Mail Sender Authentication link to open the External Services window.
3. In the list to the right of the Enable DMARC Mail Sender Authentication setting name, select one of the following options:
   • Yes, if you want to enable DMARC Mail Sender Authentication.
   • No, if you want to disable DMARC Mail Sender Authentication.
4. Click the Apply button.

To enable DMARC message authentication, you have to allow Kaspersky Security 8 for Linux Mail Server to connect to the DNS server. If the connection to the DNS server is prohibited, DMARC Mail Sender Authentication is disabled.