Exchange Server Turn on or off NDR's

To Turn off NDRs

 * 1) first open the exchange manager.
 * 2) open global settings
 * 3) select internet message formats
 * 4) Doubleclick in the open area and the dialog box will open.
 * 5) go to the advanced tab
 * 6) Uncheck all non-delivery Reports.
 * 7) if you want to allow NDRs Check the box.