RSS Viewer MOSS 2007 Webpart via proxy

You may want to extend your MOSS 2007 Web page with a RSS Viewer WebPart. It works fine until you use your Web access via proxy server. This way you will be confused seeing RSS feeds just fine in an Internet Browser, but getting an error message with the same URL in MOSS Web page with RSS Viewer WebPart:

An unexpected error occurred processing your request.

Edit your web.config: insert following snippet and edit your proxy server/port data:

<system.net>

<defaultproxy>

<proxy proxyaddress="http://Proxy_Server:port" bypassonlocal = "true"/>

</defaultproxy>

</system.net>

Restart IIS and enjoy!