Overview

Logs keep information records of selected events that occurred or detected by Kerio Control. The warning log displays warning messages about less significant errors, which may be communication errors between the server and the Web Administration interface, etc.

This article explains the types of warning logs and provides examples for each.

Information

Events causing the display of warning messages in this log do not significantly affect Kerio Control's operation. However, they can indicate specific or possible problems. For example, the warning log can help if users are complaining about services that are not working.

Categories

Below are the categories of warnings recorded in the warning log:

1. System Warnings

   This type of warning shows informational error and warning events related to the server. This error happens when someone opens a log in the Web Administration interface, and the session closes (usually due to restart of the server).

   Since logs are refreshed periodically, requests from succeeding users will produce warning messages, until the user who originally opened the log is online again:

   [19/Nov/2019 13:35:33] Cannot list the log. Permission denied.

2. Kerio Control Configuration Issues

   Invalid values retrieved from the configuration file.

3. Warnings of Kerio Control operations

   Failures in DHCP, DNS, antivirus check, user authentication, etc.

   For example: 

   [02/Jan/2013 13:45:37] Unable to categorize 'example.com' by KerioWeb Filter. DNS response 'FAILURE: Invalid authorization' to query 'example.com.f836.ko-34554.v3.url.zvelo.com' is invalid.

   For more information, please refer to Handling Miscategorized URL.

4. License warnings 

   Displays software maintenance expiration, forthcoming expiration of the Kerio Control license, Kerio ControlWeb Filter license, or the antivirus license.

   For example:

   [02/Jan/2012 15:54:20] License update failed: Automatic license update failed. User interaction is required by registration server

   For more information, please refer to Licensing and Registering

5. Bandwidth Management Warnings

   [18/Jan/2013 11:22:44] Connection limit of 500 inbound connections reached for host 192.168.42.192.

   For more information, please refer to Configuring Connection Limits

6. Kerio Control Web Filter Alerts

   Kerio Control could not authorize to Kerio Web Filter. Kerio Web Filter is not working and users can open all web page

   For more information, please refer to Using Kerio Control Web Filter

7. Crashdumps After Application Failure

Related Articles

Kerio Control Logs Overview

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