title: NLog FallBackgroup log exception on fail to log
body: <p>I have got following in my NLog config.</p>
  
  <pre><code>&lt;targets&gt;
    &lt;target xsi:type="FallbackGroup" name="MainTarget"&gt;
      &lt;target xsi:type="AsyncWrapper" name="MyDataBaseLogger"&gt;
        &lt;target xsi:type="MyTarget" /&gt;
      &lt;/target&gt;
      &lt;target xsi:type="AsyncWrapper" name="MyFileLogger"&gt;
        &lt;target xsi:type="MyTarget2" /&gt;
      &lt;/target&gt;        
    &lt;/target&gt;
  &lt;/targets&gt;
  </code></pre>
  
  <p>MyTarget.cs is as follows:</p>
  
  <pre><code>   [Target("MyTarget")]
      public class MyTarget : TargetWithLayout
      {
          protected override void Write(LogEventInfo logEvent)
          {
              WriteLogEvent(logEvent);
          }
  
          protected override void Write(AsyncLogEventInfo[] logEvents)
          {
              foreach (var logEvent in logEvents)
              {
                  WriteLogEvent(logEvent.LogEvent);
              }
          }
  
          private void WriteLogEvent(LogEventInfo logEvent)
          {
              throw new Exception("My Logger Failed");
              Debug.WriteLine(logEvent.FormattedMessage);
          }
      }
  </code></pre>
  
  <p>MyTarget2.cs</p>
  
  <pre><code>[Target("MyTarget2")]
  public class MyTarget2 : TargetWithLayout
  {
      protected override void Write(LogEventInfo logEvent)
      {
          WriteLogEvent(logEvent);
      }
  
      protected override void Write(AsyncLogEventInfo[] logEvents)
      {
          foreach (var logEvent in logEvents)
          {
              WriteLogEvent(logEvent.LogEvent);
          }
      }
  
      private void WriteLogEvent(LogEventInfo logEvent)
      {
          Debug.WriteLine(logEvent.FormattedMessage);
      }
  }
  </code></pre>
  
  <p>So in this scenario if MyTarget fails (in this example it does), it goes to MyTarget2 which it does. But how do I log the exception/message that MyTarget has failed to log the exception in first instance?</p>
  
  <p>Thanks,</p>