I had to reinstall a sbs 2003 server due to a failing hard drive. The server is fully functional on all levels except for the fact that I cannot receive any external email. I can Telnet via port 25 from outside my network. I can access OWA from inside and outside my network. I am using a FIOS router that has a static IP, utilizing port forwarding to my inside IP address of the Exchange server. I am at my whits end about this problem. I have restored many exchange servers in the past without any issues. What else could it possibly be?