Руководство Пользователя для Cisco Cisco Email Security Appliance C170
16-2
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
OL-25136-01
Chapter 16 Enabling Your C350D Appliance
•
Resource-conserving bounce setting - The C350D appliance allows you to configure the system to
detect potential blocked destinations and bounce all messages bound for that destination. For more
information, see
detect potential blocked destinations and bounce all messages bound for that destination. For more
information, see
•
Software based performance enhancement - The C350D appliance includes a software module that
dramatically enhances the outbound delivery performance.
dramatically enhances the outbound delivery performance.
Features Disabled in the C350D
Your C350D appliance contains several modifications to the AsyncOS operating system. Some features
of the standard C- and X-Series appliances are not applicable to outbound email delivery and to improve
system performance have been disabled. These modifications and differences are discussed below.
of the standard C- and X-Series appliances are not applicable to outbound email delivery and to improve
system performance have been disabled. These modifications and differences are discussed below.
Non-Applicable Features:
•
Cisco IronPort anti-spam scanning and on or off box spam quarantining — Because anti-spam
scanning pertains mostly to incoming mail, the Cisco IronPort Anti-Spam scanning engine is
disabled. Chapter 9 is, therefore, not applicable.
scanning pertains mostly to incoming mail, the Cisco IronPort Anti-Spam scanning engine is
disabled. Chapter 9 is, therefore, not applicable.
•
Outbreak Filters — Because Cisco IronPort’s Outbreak Filters feature is used to quarantine
incoming mail, this feature has been disabled on the C350D. Chapter 11 is, therefore, not applicable.
incoming mail, this feature has been disabled on the C350D. Chapter 11 is, therefore, not applicable.
•
SenderBase Network Participation capabilities — Because SenderBase Network Participation
reports information about incoming mail, this feature has been disabled on the C350D appliance.
Chapters 8 and 12 are, therefore, not applicable.
reports information about incoming mail, this feature has been disabled on the C350D appliance.
Chapters 8 and 12 are, therefore, not applicable.
•
Reporting — Reporting is limited. Some reports are not available, and the reporting that does occur
is set to run at a very limited level due to the performance issues.
is set to run at a very limited level due to the performance issues.
•
RSA Data Loss Prevention — RSA DLP scanning for outgoing messages has been disabled on
C350D appliances.
C350D appliances.
•
The totals shown in the Email Security Monitor Overview report for 350D appliances may
erroneously include spam and suspect spam counts although these features are disabled for the
C350D appliances.
erroneously include spam and suspect spam counts although these features are disabled for the
C350D appliances.
AsyncOS Features Applicable to the C350D
The C350D appliance incorporates most of the latest AsyncOS features, many of which are of interest
to C350D users.
to C350D users.
lists some of these features:
Table 16-1
AsyncOS Features Included in the C350D Appliance
Feature
More Information
Domain Key signing
DKIM/Domain Keys is a method for verifying authenticity of email
based on a signing key used by the sender. See the “Email
Authentication” chapter in the Cisco IronPort AsyncOS for Email
Advanced Configuration Guide.
based on a signing key used by the sender. See the “Email
Authentication” chapter in the Cisco IronPort AsyncOS for Email
Advanced Configuration Guide.
Centralized management
See the “Centralized Management” chapter in the Cisco IronPort
AsyncOS for Email Advanced Configuration Guide.
AsyncOS for Email Advanced Configuration Guide.