[Plugin: Contact Form 7] contact form failing

I have been using the contact form on my site with no code changes to it whatsoever other than upgrades here and there and its worked well for a couple of years. But the last week or so it fails to send client requests. I then just grab the code and re upload it to the widget side and it will work for a day or so then start failing again. Any ideas?

http://wordpress.org/extend/plugins/contact-form-7/

[ closed – duplicate of: http://wordpress.org/support/topic/plugin-contact-form-7-problem-with-the-contact-form ]