Emailrelay doesn't work on Windows installation

I installed RT 3.012-win32 on a windows 2003 server. It automatically
installed fetchmail and e-mailrelay. Fetchmail works good, it can download
mail from MS exchange 2003 server and creates ticket in RT. But outgoing
mail stuck at spool directory, and never forward to SMTP server.

Here is my configuration:

start.bat file:
rem emailrelay -a 16977 -Q -s
c:\Progra~1\OurInternet\Common\emailrelay\spool -p 6977 -y localhost:25
emailrelay --admin 16977 --admin-terminate --spool-dir
c:\Progra~1\OurInternet\Common\emailrelay\spool --port 6977 --as-server
–forward-to localhost:25

SMTP server, I tried to use remote exchange server, and local IIS SMTP
server (as in start.bat file point to localhost:25). Nothing works.

In Global Setup, I point SMTPServer to remote-exchange server;
localhost:25, localhost:6977, Nothing works.

What should be for SMTPfrom, an email address or a hostname?

These should be common problems for everyone does RT on the windows, but I
hardly can get detail info from anywhere.

Please help.

Thanks very much…

Yang Bin.