That´s why the contrast between sky and landscape are a stretch for any digital sensor. But there is hope, you can easily adjust that in Photoshop or Photoshop Elements.
This is the shot taken from the camera:

This is the shot after some PP:

Here you can download the Photoshop document to analyse it, (you can adjust the curves level, if you´d like to lighten up the whole image):
http://www.bloomi.de/images/sonnenuntergang.psd" onclick="window.open(this.href);return false;