Renewing a license involves the following steps:
After removing the key, Kaspersky Secure Mail Gateway will skip all messages without scanning by the scan modules. Allowlists and denylists will keep working. We recommend disabling message reception in the Kaspersky Secure Mail Gateway cluster to prevent emails with malicious content from reaching the organization.
You can add a key to the application in one of the following ways: apply a key file or enter an activation code.
Go to the Nodes section and make sure that there are no database update errors or licensing errors.
If the Operating system restart is required is displayed for a node, restart that node.