I setup a transport rule to return an NDR with an enhanced status code. The part I want to customize is where the NDR says "Your message wasn't delivered because the recipients email provider rejected it"
I did use powershell to create the actual text and it does display with the enhanced error code but I can't get the text to display at the top. On Server 2008R2 with Exchange 2010 the text is displayed at the top and with the error code but on this server, server 2012 R2 with Exchange 2010 it only displays the text with the code. Any thoughts experts?