How to fix this error in contact form 7 in wordpress?
<p>I have created a contact form using contact form 7 plugin in WordPress and uploaded onto server. When I am filling all the details and clicking the submit button, this error is showing :</p>

<blockquote>
  <p>Failed to send your message. Please try later or contact the administrator by another method.</p>
</blockquote>

<p>Can anyone tell why this error is showing ?</p>