title: Cannot receive Ack from Mirth
body: <p>I have a testing tcp application which will send HL7 message to Mirth and receiving acknowledgement from Mirth.The problem is that I can send message to Mirth Channel which I created with connector type=TCP Listener but Mirth somehow did not send back acknowledgment to my application.I found that sometimes respone successfully generated and sometimes response successfully send.But I cannot receive any ack message from Mirth.I am a newbie with Mirth and I don't know exactly how to set the channel to receive and send ack message.Please help me.
  Thanks.</p>