User Guide

Managing the spam filtration server 61
A higher value tells the filtration server to check a greater
number of intermediate servers increasing the probability of
recognizing spam messages that arrive via several intermediate
mail servers. At the same time, it also generates additional load
on the filtration server and can lead to filter false positives.
• Overall timeout of all DNS requests (in seconds) – time interval
(seconds) during which the application will wait for a response from DNS
server while running its DNS-based checks. Default value: 10.
• Check MS Word and RTF files – parameter that enables / disables the
analysis of text attachments in Word Document (doc) and RTF formats.
• UDS enabled – parameter that enables / disables the mode of UDS-
based scanning of messages. The check allows timely blocking of spam
mail before updates to the content filtration databases are downloaded.
You are advised to disable UDS-based checks only in case when that
method considerably decreases the filtering server performance or when
there is no way to organize the interaction between your filtration server
and UDS servers of Kaspersky Lab.
For details about UDS please see section 2.2.4 on page. 18.
• Timeout for receiving response from UDS server (in seconds) –
timeout for establishment of a connection between the filtering server and
a UDS server. If the filtration server does not receive response from UDS
within the specified time interval, it will attempt to connect to another UDS
server of Kaspersky Lab.