title: How do I stop NServiceBus retrying a message that HASN'T thrown an exception?
body: <p>I'm experiencing behavior related to retries that I can't find any reference to in documentation or searches I've tried.  Essentially if my handler takes longer than 60 seconds to process a message (note it does NOT throw an exception), NServiceBus fires another handler to process the same message.  This means the work done by the handler runs (at least) twice (often 5 times as I have MaxRetries configured to 5).</p>
  
  <p>I only want the message to be retried if it really fails (i.e. an exception is thrown), not just because its taking longer than a minute.  </p>
  
  <p>Is this behavior as designed?  Can it be turned off?  Is the "60 seconds" configurable?</p>
  
  <p>In the logs it just looks like a new message being handled:</p>
  
  <pre><code>2014-12-09 14:50:38,406 [13] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - ChildContainerBehavior
  2014-12-09 14:50:38,422 [13] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - MessageHandlingLoggingBehavior
  2014-12-09 14:50:38,430 [13] DEBUG NServiceBus.Unicast.Behaviors.MessageHandlingLoggingBehavior - Received message with ID 031e6070-4397-4e55-8670-a3fc00f49d7c from sender Foo
  2014-12-09 14:50:38,440 [13] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - ImpersonateSenderBehavior
  ...
  2014-12-09 14:50:40,313 [13] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - InvokeHandlersBehavior
  2014-12-09 14:50:40,319 [13] INFO  MyHandler - Running
  ...
  ...
  2014-12-09 14:51:38,642 [15] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - ChildContainerBehavior
  2014-12-09 14:51:38,667 [15] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - MessageHandlingLoggingBehavior
  2014-12-09 14:51:38,678 [15] DEBUG NServiceBus.Unicast.Behaviors.MessageHandlingLoggingBehavior - Received message with ID 031e6070-4397-4e55-8670-a3fc00f49d7c from sender Foo
  2014-12-09 14:51:38,686 [15] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - ImpersonateSenderBehavior
  ...
  2014-12-09 14:51:38,831 [15] DEBUG NServiceBus.Pipeline.BehaviorChain`1 - InvokeHandlersBehavior
  2014-12-09 14:51:38,837 [15] INFO  MyHandler - Running
  </code></pre>