CHAPTER 2. ARCHITECTURE OF
KASPERSKY ANTI-SPAM
AND PRINCIPLES OF SPAM
FILTERING
This section contains descriptions of the main product components and the
principles of filtering as well as the Control Center, the main tool for Kaspersky
Anti-Spam administration and configuration.
2.1. Product structure
Kaspersky Anti-Spam 3.0 is a spam recognition and filtering system functioning
as an integral part of an appropriate mail server. Kaspersky Anti-Spam 3.0 is not
a full-featured mail server able to receive mail, relay it or deliver e-mail to the
mailboxes of end recipients. The architecture of Kaspersky Anti-Spam is shown
in Fig. 1.
Kaspersky Anti-Spam consists of the following components:
•
Client plug-in modules
intended for product integration with mail server.
•
Anti-Spam Engine
– the filtration server component that analyzes e-mail
messages rating and processing them. Filtration server includes a
number of auxiliary modules, which provide for its functioning and
integration with mail servers:
•
Filtration module – the module filtering spam.
•
Licensing module – the module that manages product licenses
and the list of protected domains.
•
Content filtration databases – a corpus of data that the filtration
server uses to rate messages; updates to the content filtration
databases are published on the servers of Kaspersky Lab every
20 minutes.
•
Updater module for the content filtration databases – a system
that provides for automatic downloading of new content filtration
databases from updating servers and their installation for further
use by the anti-spam engine.
