: Update your DNS configuration to use reliable third-party servers like Cloudflare (1.1.1.1) or OpenDNS (208.67.222.222) for *.zvelo.com URLs.
Troubleshooting Kerio Control: Web Filter Not Activated & Categorization Disabled : Update your DNS configuration to use reliable
| Preventive Measure | Why | |--------------------|-----| | Set up monitoring alerts | Receive email notification if categorization stops. | | Regularly check license expiry | Add a calendar reminder 30 days before renewal. | | Use redundant DNS servers | Prevents single-point-of-failure resolution issues. | | Document upstream proxy changes | Any proxy change requires updating Kerio. | | Test after updates | Category servers change IPs; test every quarter. | | | Use redundant DNS servers | Prevents
: The Kerio Control Web Filter is an optional module. If not licensed, it functions as a 30-day trial and automatically disables itself afterward. | : The Kerio Control Web Filter is an optional module