I have configured the our new SBS 2003 server with exchange from out of the box. It currently sites behind a SonicWall firewall and I have opened port 25 for email. I also posted our server MX records to DNS. I cannot figure this out. The server is not receiving inbound emails, I keep testing and its not working. I attempted to even connect the server directly to the ISP without a firewall and same result. When I send an email just to our IP address I receive a relay failure stating email was rejected by domain. Does anyone have any idea’s how to correct this?
