Mail Anti-Virus applies various groups of settings to protect mail. The settings groups are called mail security levels. You can select one of the pre-installed mail security levels or configure a custom mail security level. There are three mail security levels: High, Recommended, and Low. The Recommended mail security level is considered the optimal group of settings, and is recommended by Kaspersky.
To change the mail security level in Kaspersky Security Center:
After you configure a custom mail security level, the name of the security level in the Security level section changes to Custom.
To change the mail security level in the local interface:
In the right part of the window, the Mail Anti-Virus component’s settings are displayed.
After you configure a custom mail security level, the name of the security level in the Security level section changes to Custom.