Under 2012, our mta would periodically die but gwmonitor would bring it right back up. Since we've upgraded to 2014, (still running gwmonitor), the mta will stop routing mail but shows as running in monitor. If we do a grpwise status at console, the agent shows as running but no mail is being processed. We then attempt to stop the agent, and the status shows as "Dead" and not "Done." So the problem is the mta is not routing messages, but also is not actually reporting being down so gwmonitor does not restart the agent. Any ideas or is this a bug??