Authorize.net and Windows Server 2008

[Radiatorman]

I'm trying to implement a new installation of AC 7.0.4 on a windows 2008 server. My development site works great on Server 2003 with Authorize.net but not on Server 2008. This is the error I receive within the authorize log:

Receive: 3|1|250|This transaction has been declined.||P|0|||50.65|CC|auth_only||||||||||||||||||||||||||FD82BB8D52E6F673DBB08BBB2C21765B||||||||||||||||||||||||||||||

It doesn't appear that the system is even making a connection with Authorize since there is no indication of failed transactions in the Authorize transaction screen. I have even turned off firewalls in hopes there is some setting there but that didn't work either. I have a cybersource account for other websites and that works perfectly with this installation.

Any ideas?

[Radiatorman]

I found out the problem... AIM was set to only allow certain IP addresses to post.