Cisco Cisco Email Security Appliance C160 Guía Del Usuario
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Cisco AsyncOS 8.0.1 for Email User Guide
Chapter 5 Configuring the Gateway to Receive Email
Working with Listeners
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To help test and troubleshoot the Cisco appliance, you can create a “blackhole” type listener instead
of a public or private listener. When you create a blackhole listener, you choose whether messages
are written to disk or not before they are deleted. (See “Testing and Troubleshooting” in the Cisco
IronPort AsyncOS for Email Daily Management Guide for more information.) Writing messages to
disk before deleting them can help you measure the rate of receiving and the speed of the queue. A
listener that doesn’t write messages to disk can help you measure the pure rate of receiving from
your message generation systems. This listener type is only available through the
of a public or private listener. When you create a blackhole listener, you choose whether messages
are written to disk or not before they are deleted. (See “Testing and Troubleshooting” in the Cisco
IronPort AsyncOS for Email Daily Management Guide for more information.) Writing messages to
disk before deleting them can help you measure the rate of receiving and the speed of the queue. A
listener that doesn’t write messages to disk can help you measure the pure rate of receiving from
your message generation systems. This listener type is only available through the
listenerconfig
command in the CLI.
illustrates a typical email gateway configuration created by the System Setup Wizard on
Cisco appliance models that have more than two Ethernet interfaces. Two listeners are created: a public
listener to serve inbound connections on one interface and a private listener to serve outbound
connections on a second IP interface.
listener to serve inbound connections on one interface and a private listener to serve outbound
connections on a second IP interface.
illustrates a typical email gateway configuration created by the System Setup Wizard on
Cisco appliance models that have only two Ethernet interfaces. One public listener on a single IP
interface is created to serve both inbound and outbound connections.
interface is created to serve both inbound and outbound connections.