Cisco Cisco Email Security Appliance C160 Mode D'Emploi
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User Guide for AsyncOS 9.7 for Cisco Email Security Appliances
Chapter 40 Testing and Troubleshooting
Using the Listener to Test the Appliance
Figure 40-3
Output for the Trace Page (2 of 2)
Using the Listener to Test the Appliance
“Black hole” listeners allow you to test your message generation systems and to also get a rough measure
of receiving performance. Two types of black hole listeners are queueing and non-queueing.
of receiving performance. Two types of black hole listeners are queueing and non-queueing.
•
The queueing listener saves the message to the queue, but then immediately deletes it. Use a queuing
listener when you are interested in measuring the performance of the entire injection portion of your
message generation system.
listener when you are interested in measuring the performance of the entire injection portion of your
message generation system.
•
The non-queueing listener accepts a message, and then immediately deletes it without saving it. Use
the non-queueing listener when you want to troubleshoot the connection from your message
generation system to the appliance.
the non-queueing listener when you want to troubleshoot the connection from your message
generation system to the appliance.
For example, in
, you could create a black hole listener “C” to mirror the private listener
labeled “B.” A non-queueing version tests the performance path of the system from the groupware client
to the groupware server to the appliance. A queueing version tests that same path and the appliance’s
ability to enqueue messages and prepare them for delivery via SMTP.
to the groupware server to the appliance. A queueing version tests that same path and the appliance’s
ability to enqueue messages and prepare them for delivery via SMTP.