When specifying the name of the Free/Busy host to be added to the Contacts in the Directory Connector, using either the FQDN or IP address of the Free Busy host, clicking the TEST Button returns the following error:
"Unable to contact the Free/Busy Bridge service on the specified host."
The QuestFreeBusy site must be running in IIS.
The ASP.NET IIS registration must be run (or rerun if there are multiple versions of ASP.NET on the same server etc..)
Open the Web Server (IIS) management console and start the QuestFreeBusy site. You may need to stop the Default site prior to successfully starting the QuestFreeBusy site.
From a command prompt, browse to:
C:\Windows\Microsoft.Net\Framework\vx.x.xxxx\ (vx.x.xxxx is your version of .NET Framework)
The 'TEST' button should work and successfully validate the Free/Busy service host.