OMA doesn’t work

I have rebuilt a sbs2003 server with running exchange with all the latest patches. I am having problems running OMA. When i run the internet connection wizard and try to enable OMA in the firewall it fails. I have made the IIS rights as open as i can and get the error “A System error has occurred while processing your request. Please try again. If the problem persists, contact your administrator.” when i try to connect via the web. I have tried on both a web browser and on a mobile phone. I get the activesync support code 0x85010001 on the phone.