Unfortunately the RSS feed is currently broken. Technical background: We're using nginx as HTTP and HTTPS reverse proxy for the Wiki.
For that reason, we're just binding to 127.0.0.1 instead binding to 0.0.0.0 and using a packet filter to disallow direct access to the backends.
That means that "Host: 127.0.0.1" is passed to our backend server process and the corresponding trac plugin for the BlogRSS breaks the links (they used absolute links instead of relative).
I'm going to make a custom code rewrite as I got some more time. Sorry. Stay tuned.
