I have CF 11 running with SQL server 2005.
I have a web server running on mydomain.com. All was well.
I needed to switch mydomain.com to another host off of my network. But I wanted to keep the CF site that was on my network, running under another domain name.
So I registered the domain name mydomaintest.com and pointed it to my current web server.
All was well, and when I would go to mydomaintest.com, it would go to my current web server.
However, once I switched the domain mydomain.com to point to the new web server, whenever I go to mydomaintest.com now, I get "DATASOURCE Undefined".
This was a custom CF site that I did not build.
Also, one more thing. If I try to create New datasource in CF Admin using my current SQL Server, it won't accept it.
I put in the name of the Datasource and select SQL server as the type, but when I submit it, it just blanks out.
Open the ColdFusion Administrator. Go to the Data Sources page.
I am assuming that you had previously configured some data sources. If so, press on the button to "Verify All Connections". What is the result?