I had problem with my website feed some time ago. When I enter my website or blog URL in the feed validateor, I got following error
Here is simple steps to make your website or blog feed is valid. Just copy and paste following code in html source code of blog or WordPress template.
Find </head> tag in the html source of your template and paste following code before </head> tag.
<link rel="alternate" type="application/rss+xml" title="Smart tutorials RSS Feed" href="http://www.smarttutorials.net/feed/" />
<link rel="alternate" type="application/atom+xml" title="Smart tutorials Atom Feed" href="http://www.smarttutorials.net/feed/atom/" />
note: In href replace www.smarttutorials.net with your blog URL.
Now enter your blog URL in the feed validateor to check, now you will get following success messgae
Please refer my previous tutorial on “how to add rss email subscription box to your blog or site“