There are several possible reasons but Ezine will inform you the reason your article is not getting approved. I encountered 3 reasons: 1) Too many keywords repeat in the article. 2) Did not state well "How to contact me" where I wrote "Please contact me if you have doubts". 3) The piece of article is self-promoting. Try to edit your article again and re-submit if your article is not getting approved.
Well, e zine had updated a new rules before six months.Your article must be informative in nature...even, if you were select a wrong category or relevant category, your article will be rejected....You need to follow their updated rules..
From the last PANDA update Ezine has strictly followed them which is total duplicate will not now survive. You need to be very efficient with your content in-terms of message, information and on other parameters as well.
Not hard at all if you have good writing skill without any grammar/spelling mistake and your content is good enough
After panda update Ezine are more stick to its term and condition. You have to follow its term and condition than only it approve your articles. 1. Must be an original article. 2. Must be informative and share your unique expertise. 3. Must have proper English, spelling, grammar, punctuation, capitalization and sentence structure. 4. Must not contain: pornography/adult material, hate or violence-oriented and so on. 5. Must not contain excessive and/or bolded keywords/ phrases and many others. So read the terms and conditions properly and than write the article in that manner and submit it.
If you reply and ask them, they will tell you the reasons. They have really tightened their quality control.