User Guide

CHAPTER 1. KASPERSKY
®
SMTP-GATEWAY 5.5 FOR
LINUX/UNIX
Kaspersky
®
SMTP-Gateway for Linux/Unix (hereinafter referred to as
Kaspersky SMTP-Gateway or the application) is designed for anti-virus
processing of SMTP mail traffic. The application is a full-featured mail relay
(compliant with IETF RFC internet standards) that runs under Linux, FreeBSD
and OpenBSD operating systems.
The application allows the user to:
• Scan email messages for viruses.
• Detect infected, suspicious, corrupted, and password-protected
attachments and message bodies.
• Perform anti-virus processing (including disinfection) of infected objects
revealed in email messages by scanning.
• Provide additional email traffic filtering by names, MIME types of
attachments, and apply certain processing rules to the filtered objects.
• Maintain archives of all email messages sent and/or received by the
application, if this is required by the internal security policy of the
company.
• Use the technology of DNS black lists (RBL) to filter spam.
• Compose "white" and "black" lists of senders/recipients for use by the
application while processing e-mail traffic.
• Enable restrictions for SMTP connections providing protection against
hacking attacks and preventing application use as an open mail relay for
unsolicited email messages.
• Limit the load on your server by configuring the application settings and
SMTP parameters.
• Notify senders, recipients, and the administrator about messages
containing infected, suspicious, or corrupted objects.
• Quarantine messages identified as spam or probable spam as well as
messages containing infected, suspicious, corrupted or password-
protected objects.