After setting up Gnats version 4 and Gnatsweb, everything seems to work yet I still get the email bounce back from an external mail server (outside world). I found in the documentation where I should change GNATSS_ADDR to cure that, but it seems the 'config' file that contained this value has been replaced. Can anyone give me a good suggestion on how and where to put a valid email address on outgoing Gnats email to prevent the bounce back in version 4?