I continued the installation of Exchange 2003 and I am almost done with it. Currently I am able to send email, to get email from my different internet pop emails using Pullmail. But I can’t get directly emails for my domain. As I have a dynamic ip i used DynDns and changed the MX record of my DNS provider to point to a CNAME with the domain name used in DynDns. It seems that the problem is coming from there, but I could not fix it, and I don’t have any idea.

I want to thanks Benoit Hamet for his wonderful support. I used also a really good article: Hosting Your Own SMTP Mail Using Exchange 2000 by Mark Fugatt. Thanks Mark.