google checkout 401 erro
接收google   checkout反馈信息的时候出现401错误，
查看记录，google无法访问我的服务器？

------解决方案--------------------
You need to turn off an anonymous in iis and then use the sample code
to authenticate the response.

You are most likely on a shared server and the shared server is trying
to authenticate Google against the domain.

There are samples showing how to set up the authentication module.

http://code.google.com/p/google-checkout-dotnet-sample-code/downloads...

Once you set up the web.config file, it will use the Merchant Id and
Key in the web.config file to authenticate the callbacks.