User Guide

12 Kaspersky
®
SMTP-Gateway 5.0
• keepup2date – components that updates the anti-virus database by
downloading the updates from the Kaspersky Lab’s update server.
• Webmin – a module for remote administration of the application using
a web interface (optional installation). This component allows to con-
figure and manage the anti-virus database updates, specify actions to
be performed on the objects depending on their status and monitor
the results of the application’s operation.
The smtpgw component (see Figure 1), in its turn, consists of the following
modules: Receiver (incoming mail receiver), Sender (module for sending
scanned messages), and AV module (module implementing the anti-virus
functionality).
Figure 1. Kaspersky SMTP-Gateway general architecture
The licensemanager components is used to manage license keys.
the keepup2date component updates the anti-virus database used for detecting
and disinfecting viruses.
2.2. How Kaspersky SMTP-Gateway
works
Kaspersky SMTP-Gateway works as follows (see Figure 2):
1. The mail agent receives email messages via the SMTP protocol and
passes them to the Receiver module.
2. The Receiver module performs the preliminary email processing using
the following criteria:
• presence of the sender’s IP address is in the list of blocked or
trusted addresses.