Since neither the micro or posts feeds are located at /rss.xml, but both use the new_rss_feed function to generate their base XML, they will both tell RSS clients that they are located at the wrong place.
Since neither the micro or posts feeds are located at <site>/rss.xml, but both use the new_rss_feed function to generate their base XML, they will both tell RSS clients that they are located at the wrong place.