Has anyone come across the following error when attempting to search and external web site.

The address could not be found, (0x80041221 - URL could not be resolved. The host may be unavailable, or the proxy settings are not configured correctly on the index server. To change proxy settings, from SharePoint Portal Server Central Administration click Configure Search and Indexing. In the list of index servers, choose the server name and edit the proxy settings on the Server Settings page. )