IronPort - daily management guide - AsyncOS 7.6.1

Using the Listener to Test the Appliance
9-16
- admin@ironport.com
Final Message Content:
Received: from remotehost.example.com (HELO TEST) (1.2.3.4)
by stacy.qa with TEST; 19 Oct 2004 00:54:48 -0700
Message-Id:
X-IronPort-AV: i="3.86,81,1096873200";
d="scan'208"; a="0:sNHT0"
Subject: hello
This is a test message.
Run through another debug session? [N]>
Using the Listener to Test the Appliance
Cisco IronPort AsyncOS 7.6 for Email Daily Management Guide
Chapter 9 Testing and Troubleshooting
“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.
The queueing listener saves the message to the queue, but then immediately deletes it. The non-queueing
listener accepts a message, and then immediately deletes it without saving it.
Use a queuing listener when you are interested in measuring the performance of the entire injection
portion of your message generation system. Use the non-queueing listener when you want to
troubleshoot the connection from your message generation system to the appliance.
For example, in Figure 9-4, 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.
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