Managing the spam filtration server
51
Although the product is being constantly developed in order to improve spam
recognition and decrease the number of false alarms from the filter, it is not
possible to eliminate altogether the probability of recognizing normal
messages as spam. Therefore, you are advised to use with caution the actions
deleting messages.
In addition to the actions forwarding messages, the administrator can define
certain actions for message modification, which may be helpful both for
visualizing the results of recognition and for subsequent use in combination with
the filters in users' e-mail client software.
Kaspersky Anti-Spam allows the following message modifications:
•
Addition of a label to the message subject field (at the beginning of
subject text). The
Prepend to the Subject
field defines the label text.
•
Addition of a special
X-Spamtest-Header
containing text specified by the
administrator. The header may be used then for automatic processing of
such messages in e-mail software employed by end users. The
Set X-
Spamtest-Header
field defines the header text. Please refer to
section A.5 on page 112 for details about the headers added to a mail
message as a result of filtration procedure.
4.4. Updating the content filtration
databases
Content filtration databases used during analysis of mail message contents are
updated by
sfupdates,
a special updater module.
It can use the Internet (an update server of Kaspersky Lab) or a network
directory as the source of updates to the content filtration databases.
The procedure can be initiated manually by running the updating script from the
command line or it can be scheduled to run automatically using cron.
4.4.1. Configuring the update parameters
In order to customize the update parameters, use the
Settings
→
Maintenance
→
Updater
page of the Control Center (see Fig. 17).
