A message is not suspended in the suspended queue if validation is unsuccessful when you send a message to a MSMQT receive location in BizTalk Server 2004 (897293)

MORE INFORMATION

The SendMSMQMessage sample application that is located in the BizTalk Server 2004 SDK samples folder is not configured to use any one of the system queues to receive a NACK. To make the SendMSMQMessage application use journaling and the dead letter queue, replace the code behind the Send exact button click event with the following code:

try 
{
MessageQueueTransaction myTransaction = new MessageQueueTransaction();
MessageQueue mq = new MessageQueue(textBoxAddr.Text);
System.Messaging.Message msg = new System.Messaging.Message();
msg.Label = "TestMessageLabel";
StreamWriter wr = new StreamWriter(msg.BodyStream,System.Text.Encoding.Unicode);
wr.Write(textBoxBody.Text);
wr.Flush();
myTransaction.Begin();
msg.UseJournalQueue = true;
msg.UseDeadLetterQueue = true;
mq.Send(msg,myTransaction); 
myTransaction.Commit();
textError.Text = "Success."; 
} 
catch (Exception ex)
{ 
textError.Text = ex.ToString();
}

After you replace the code, when you click the Send exact button to send a message to your MSMQT receive function and the message fails validation, a NACK is sent back to the originating Message Queuing server and your message is stored under the system dead letter queue. Additionally, if the message validation was successful, a positive acknowledgement (ACK) is sent back to the originating Message Queuing server, and your message is now viewable under the system journal queue.

Note If you require different behavior, you may want to use the Microsoft BizTalk Server 2004 Adapter for Message Queuing 2.0. For example, you may want to decouple the transport failures from the transform failure and to see the failed message as suspended within BizTalk Server.