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4. ESET Mail Security - Microsoft Exchange Server protection
4.1 General settings
This section describes how to administer rules, log files, message quarantine and performance parameters.
4.1.1 Rules
The
Rules
menu item allows administrators to manually define email filtering conditions and actions to take with
filtered emails. The rules are applied according to a set of combined conditions. Multiple conditions are combined with
the logical operator AND, applying the rule only if all the conditions are met. The column
Number
(next to each rule
name) displays the number of times the rule was successfully applied.
The rules are checked against a message when it is processed by transport agent (TA) or VSAPI. When both TA and
VSAPI are enabled and the message matches the rule conditions, the rule counter may increase by 2 or more. This is
because VSAPI accesses each part of the message individually (body, attachment) meaning the rules are consequently
applied to each part individually. Furthermore, rules are also applied during background scanning (e.g. repeated
mailbox-store scan after virus signature database update), which can increase the rule counter.
NOTE:
You can also use system variables to apply Rules (for example:
%PATHEXT%
).
