User Guide

Application structure and typical deployment scenarios 15
Message addition to backup or quarantine directory does not
block its delivery to the recipient. If you want to prevent its
delivery to end recipients, you have to specify an additional
action blocking it.
7. The Sender module receives each message from the ready-to-send
queue and transfers it via the SMTP protocol to the onward mail agent
to be delivered to local end users or rerouted to other mail servers.
8. If your network security policy requires logging of all outgoing email
traffic, a copy of each message will be automatically saved to the
archive of sent messages (see Fig. 3).
Figure 3. Saving messages to the archives of incoming/outgoing mail.
2.3. Typical deployment scenarios
Depending upon the network architecture, the following options for installation of
Kaspersky SMTP-Gateway are possible:
• Install the application at the network perimeter on the same computer with
your mail system (recommended for Sendmail, Postfix and Exim mail
systems).
• Install the application at the network perimeter on a dedicated server to
operate as an anti-virus filter (recommended for Sendmail, Postfix and
Exim mail systems).
• Install the application inside your existing mail system on the same
computer.
• Install the application inside your mail system on a dedicated server to
operate as an anti-virus filter.
The sections below discuss in detail the above scenarios and describe their
advantages.