How to resolve “Failed to send your message” problem for Contact Form 7? [closed]

I am using contact form 7 but when i m trying to send msg through contact form it gives error given below
Failed to send your message. Please try later or contact administrator by other way.

please help me

You haven’t given enough information, so it might have something to do with javascript conflicts, files not loading, server SMTP, etc. Best thing to do is work through the Contact Form 7 issues FAQ at contactform7.com/faq/