Cisco Cisco Email Security Appliance C370 User Guide

At this point, our Email Gateway configuration looks like this: 

 expands the illustration shown in 

 to include the processing sequence of a 

listener’s HAT and (if applicable) RAT, and the default values for each. 

Ethernet interface: Data 2

IP interface: PublicNet (e.g. 192.168.2.1)

Public Listener: InboundMail 

SMTP

IronPort Email 

Security appliance

Private Listener: OutboundMail 

Groupware server / Message generation system 

This public listener’s RAT 
was modified to accept 
connections for the 
domain 

newcompanyname.com

. A 

custom SMTP response 
was also created. 

This private listener 
remains unchanged. 
Private listeners do not 
have a RAT. 

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

ALL:            $ACCEPTED

Host Access Table (HAT):

RELAYLIST:    $RELAYED