RSS problem

Hi I have a site and the problem is my rss feed page shows Page Not Found. But my comments feed are working fine..
E.g :
xyz.com/feeds : page not found
xyz.com/comments/feed/ : its working fine

PS: I have only one content and that too only page…earlier it used to work fine but not now…..I read some thread that a special plugin is required to show page rss, so any idea about that…
Thanks in advance 🙂

Kindly let me know