title: Failed to send your message. Please try later or contact the administrator by another method
body: <p>I use Contact Form 7 to send a messages.</p>
  
  <p>In my own server theform works perfect. But client gets this error:</p>
  
  <blockquote>
    <p>Failed to send your message. Please try later or contact the
    administrator by another method.</p>
  </blockquote>