Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

Página de 652
1-23
Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
Chapter 1      Getting Started with the Cisco IronPort Email Security Appliance
or HTTPS. In addition, an interactive Command Line Interface (CLI) which you 
access from a Secure Shell (SSH), telnet, or direct serial connection is provided 
for the system. The Cisco IronPort appliance also features a robust logging 
capability, allowing you to configure log subscriptions spanning the functionality 
of the entire system and reducing the time spent finding the information you need.
Mail Flow and the Cisco IronPort M-Series Appliance
If you include an M-Series appliance in your configuration, mail is sent to the 
Cisco IronPort M-Series appliance from other Cisco IronPort (C- and X-Series) 
appliances. A Cisco IronPort appliance that is configured to send mail to a Cisco 
IronPort M-Series appliance will automatically expect to receive mail released 
from the M-Series appliance and will not re-process those messages when they are 
received back — messages will bypass the HAT and other policy or scanning 
settings and be delivered. For this to work, the IP address of the Cisco IronPort 
M-Series appliance must not change. If the IP address of the Cisco IronPort 
M-Series appliance changes, the receiving C- or X-Series appliance will process 
the message as it would any other incoming message. Always use the same IP 
address for receiving and delivery on the Cisco IronPort M-Series appliance.
The Cisco IronPort M-Series appliance accepts mail for quarantining from the IP 
addresses specified in the Cisco IronPort Spam Quarantine settings. To configure 
the local quarantine on the Cisco IronPort M-Series appliance see the Cisco 
IronPort AsyncOS for Security Management User Guide 
. Note that the local 
quarantine on the Cisco IronPort M-Series appliance is referred to as an external 
quarantine by the other Cisco IronPort appliances sending mail to it.
Mail released by the Cisco IronPort M-Series appliance is delivered to the 
primary and secondary hosts (Cisco IronPort appliance or other groupware host) 
as defined in the Spam Quarantine Settings (see the Cisco IronPort AsyncOS for 
Security Management User Guide 
). Therefore, regardless of the number of Cisco 
IronPort appliances delivering mail to the Cisco IronPort M-Series appliance, all 
released mail, notifications, and alerts are sent to a single host (groupware or 
Cisco IronPort appliance). Take care to not overburden the primary host for 
delivery from the Cisco IronPort M-Series appliance.