Cisco Cisco Email Security Appliance C370 User Guide
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Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
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Chapter 5 Configuring the Gateway to Receive Email
Figure 5-44
Public and Private Listeners
Private Listener
IronPort Email
Security appliance
Public Listener
Internet:
Hosts: Many
Recipients: Limited
Recipients: Limited
Internal Network:
Hosts: Limited
Recipients: Many
Recipients: Many
Host Access Table (HAT)
Host
ACCEPT
Host
RELAY
ALL
ACCEPT
Recipient Access Table (RAT)
Domain
ACCEPT
ALL
REJECT
Host Access Table (HAT)
Host
RELAY
ALL
REJECT
Public:
Private:
No RAT