XFOR: How to Use the IMC Queue Dump Utility (Imcdump.exe)

This article describes how to use the IMC Queue Dump utility (Imcdump.exe). Imcdump.exe is included with Exchange Server versions 4.0, 5.0, and 5.5. For Exchange Server 5.5, Imcdump.exe is located in the root of the CD-ROM in the Server\Support\Utils\Platform folder, where Platform is either Alpha or I386. For Exchange Server, versions 4.0 and 5.0, Imcdump.exe is located on the root of the CD-ROM in the Support\Utils\Platform folder.

Imcdump.exe displays information about the internal representation of the Internet Mail Service queues that is stored in the Queue.dat file of the Imcdata folder.

How to Use Imcdump.exe

Usage: imcdump heap-path INBOUND|OUTBOUND|FREELIST|HEAP|queuename

The heap-path is the path to the Queue.dat file including the file name. By default, the path is Homedrive\Exchsrvr\Imcdata\Queue.dat.

For example, to dump the INBOUND queue for the Queue.dat file that is located in the default location, run the following command from a command prompt (start from the same folder where the Imcdump.exe file is located): When you run this command, the output is displayed in the window. To dump the output to a file, run the following command:

Troubleshooting

This section describes potential errors, their causes and resolutions.

�	Possible issue: � Symptoms: You receive either of the following error messages: Failed to open C:\Exchsrvr\Imcdata\Queue.dat Error=-2147483616 -or- Failed to open C:\Exchsrvr\Imcdata\Queue.dat Error=80000020 � Cause: The Microsoft Exchange Internet Mail Service (MSExchangeIMC) service is started. � Resolution: Stop the MSExchangeIMC service in the Services Control Panel.
�	Possible issue: � Symptoms: You receive the following error message: Failed to open C:\Exchsrvr\Imcdata\ Error=-2147483645 � Cause: The incorrect path is specified. � Resolution: Enter the correct path to the Queue.dat file. Make sure to include the Queue.dat file in the path.