Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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Cisco AsyncOS 8.5.5 for Email Security User Guide
 
Chapter 23      Configuring Routing and Delivery Features
  The Domain Map Feature
Figure 23-3
Masquerading Defined for a Private Listener
The Domain Map Feature
You can configure a “domain map” for listeners. For each listener you configure, you can construct a 
domain map table which rewrites the Envelope Recipient for each recipient in a message that matches a 
domain in the domain map table. This feature is similar to the sendmail “Domain Table” or Postfix 
“Virtual Table” feature. Only the Envelope Recipient is affected; the “To:” headers are not re-written by 
this feature. 
Ethernet interface: Data 2
IP interface: PublicNet (e.g. 192.168.2.1)
Public Listener: InboundMail 
SMTP
IronPort Email 
Security appliance
Private Listener: OutboundMail 
Two entries were added to the 
masquerading table for this 
private listener. The first entry 
masks all subdomains of a 
network (e.g. 
exchange.example.com
 is 
rewritten as 
example.com
). The 
second entry rewrites the bare 
address 
joe
 as 
joe@example.com
Ethernet interface: Data 1
IP interface: PrivateNet (e.g. 192.168.1.1)
Host Access Table (HAT):
WHITELIST:      $TRUSTED 
BLACKLIST:      $BLOCKED
SUSPECTLIST:    $THROTTLED
UNKNOWNLIST:    $ACCEPTED
spamdomain.com  REJECT
.spamdomain.com REJECT
251.192.1.      TCPREFUSE
169.254.10.10   RELAY
ALL:            $ACCEPTED
Recipient Access Table (RAT):
Host Access Table (HAT):
RELAYLIST:    $RELAYED
ALL:          $BLOCKED
Default sender domain:  example.com
Received: header:           DISABLED
Masquerading: