I cannot get Links to to send e-mails on IIS4. I get the following error:

CGI ERROR
==========================================
Error Message : Unable to send rejection message. Reason:


As you can see, no reason is given.

I have checked the links.cfg many times and the mailhost is set up with a valid SMTP server. I have sent mail through the SMTP server using other apps so I know this is working. I have also made sure that the sendmail path is not set up.

Any Ideas?