Datasheet

12
Part I: An Overview of Exchange Server 2007
Table 1-1 (continued)
Feature Category Type Chapter
in Book
Description
Content
Filtering
Reliability,
speed, or
security
Antispam
and
antivirus
6 Analyzes the content of
messages using the Intelligent
Message Filter (IMF), which
is based on Microsoft’s
SmartScreen content filtering
technology. The technology
reviews the content of the mes-
sage and rejects content from
fraudulent links and spoofed
domains. The technology also
provides a certain level of anti-
phishing protection.
Outlook
E-Mail
Postmark
Reliability,
speed, or
security
Antispam
and
antivirus
6 Verifies the e-mail postmark
attached to a message. Using
the postmark feature can help
reduce false positives for send-
ers who have little or no reputa-
tion on the local system.
Spam
Assess-
ment
Reliability,
speed, or
security
Antispam
and
antivirus
6 Combines the results of the con-
tent, connection, sender/recipi-
ent, sender reputation, sender
ID verification, and Outlook
e-mail postmark validation to
create an overall spam assess-
ment. The result of this check
determines the action Exchange
Server takes on the message.
The administrator can configure
various actions based on any of
these criteria.
Service
Resilience
Scalability Antispam
and
antivirus
4 Controls the rate at which
Exchange Server sends and
receives messages. The use of
message throttling for incom-
ing messages helps prevent
Distributed Denial of Service
(DDoS) attacks. Checking for
message sending patterns helps
reduce the probability of a direc-
tory harvesting attack.