Kaspersky Secure Mail Gateway performs virus scanning of messages: scans email messages for viruses and other threats and disinfects infected objects using the current (latest) version of Anti-Virus databases.
Messages are scanned for viruses and other threats by Anti-Virus engine. Anti-Virus engine scans the body of the message and all attached files in any format (attachments) using the Anti-Virus databases. The Anti-Virus engine detects and blocks email attachments that are intended for a limited number of recipients and are components of targeted attacks designed to exploit software vulnerabilities.
In addition to virus scanning of messages, you can enable detection of certain legitimate applications by the Anti-Virus component.
Based on the scan results, the Anti-Virus engine assigns the message one of the virus scan status labels and adds a tag with the status at the beginning of the message subject (Subject field).
Depending on the status assigned, the application performs actions in accordance with the message processing rule settings. You can select actions to be performed by the application on messages with a certain status and configure tags to be added to messages based on the Anti-Virus scanning result. Before processing a message, the application saves a copy of it in Backup.
You can specify the maximum size of attachments to be scanned and determine the objects to be skipped during Anti-Virus scanning. Attachments in certain formats and with certain names can be excluded from the scan.
The Anti-Virus engine is enabled by default. If required, you can disable Anti-Virus module or disable Anti-Virus scanning for any rule.