User Guide

CHAPTER 1. KASPERSKY
®
SMTP-GATEWAY 5.0
Kaspersky
®
SMTP-Gateway for Linux/Unix (hereinafter referred to as
Kaspersky SMTP-Gateway or the application) is designed for processing and
scanning SMTP mail traffic for viruses. The application is a full-featured mail
relay (compliant with IETF RFC internet standards) that runs under Linux,
FreeBSD and OpenBSD operating systems.
Kaspersky SMTP-Gateway allows to perform the following functions:
• Scan email traffic for viruses, including attached files and message
bodies.
• Detect infected, suspicious, corrupted, and password-protected at-
tachments and message bodies.
• Disinfect infected objects detected in email messages by scanning.
• Provide additional email traffic filtering by names and MIME types of
attachments and apply certain processing rules to the filtered objects.
• Maintain logs of all email messages sent and/or received by the appli-
cation, if this is required by the internal security policy of the company;
• Provide protection against hacking attacks, block unwanted email
messages, provide the functions of an open mail relay of unsolicited
email messages;
• Limit the load on your server by configuring the application settings
and SMTP parameters.
• Notify senders, recipients, and the administrator of messages contain-
ing infected, suspicious, or corrupted objects.
• Automatically place infected, suspicious, and corrupted objects to the
quarantine or to the backup storage .
• Automatically update the anti-virus database from the Kaspersky
Lab’s update servers.
The application detects and disinfects infected objects using the anti-virus
database. During scans, the contents of each file are compared with the
sample code of known viruses contained in the database.