The form isn't working any more. So I updated the plugin to the latest version, but still not working. I haven't made any changes to it since I set it up.
I read the FAQ, and installed WP-Mail-SMTP and it is testing ok. But still getting the same error with Contact Form 7.
I have deactivated Akismet, and still not working.
The plugins I have are:
Social Sharing Toolkit
My contact form is setup like this: http://screencast.com/t/9Kmdf6uNDf