A guy called Kip Ng has posted a nice multi-part blog on Exchange 2010 SP1 Beta hosting deployment. An interesting blog is part 9 where he not only looks at Autodiscover, but also reveals a self-made standalone tool to test Autodiscover. This is great when you want to test Autodiscover but don’t have access to testexchangeconnectivity.com or your testing internally and don’t have Outlook to do the CTRL-right-click trick for running Test E-Mail AutoConfiguration.
The tool is really neat and runs in interactive mode when you don’t specify any parameters. More info on usage is contained in the blog article here. You can download AutodiscoverTest.exe directly here.