Руководство Пользователя для Cisco Cisco Email Security Appliance C170

Large corporate data centers can share one Cisco IronPort M-Series appliance 
acting as an external IronPort Spam quarantine for one or more Cisco IronPort C- 
or X-Series appliances. Further, remote offices can be set up to maintain their own 
local Cisco IronPort appliance quarantines for local use (using the local IronPort 
Spam quarantine on C- or X-Series appliances).

 shows a typical network configuration incorporating the Cisco 

IronPort M-Series appliance and multiple DMZs. Incoming mail from the Internet 
is received by the Cisco IronPort appliances in the outer DMZ. Clean mail is sent 
along to the MTA (groupware) in the inner DMZ and eventually to the end users 
within the corporate network.

Spam and suspected spam (depending on your mail flow policy settings) is sent 
to the Cisco IronPort M-Series appliance’s Spam quarantine. End users may then 
access the quarantine and elect to delete spam and release messages they would 
like to have delivered to themselves. Messages remaining in the IronPort Spam 
quarantine are automatically deleted after a configurable amount of time (see the 
“Quarantines” chapter in the Cisco IronPort AsyncOS for Email Daily 
Management Guide).

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 

Internal Users

Outer DMZ

Inner DMZ

C-Series Appliance

Groupware

C-Series Appliance

C-Series Appliance

M-Series Appliance

Corporate 

Network