Trying to figure out why we get this 500 error:
Specified configSource cannot be parsed
From this entry in web.config
<rewriteMaps configSource="/upload/rewritemaps.config" />
pointing to this file upload/rewritemaps.config with this file content:
<rewriteMap name="TestRewriteMap">
<
add key="/Web-Sites" value="/WebSites.aspx" />
</
rewriteMap>