I've found something odd with our Web Presence Builder. It's on Windows, Plesk 11.0.9 MU#53. The contact form won't send if the recipient email address has the same domain as the website it is sending from. When hitting the Send button it does nothing at all, like the button doesn't work. If we change the recipient email to something with any other domain, it works fine and the email sends without a problem. Change it back to any email address containing the domain again and the send button stops working. Anyone else seen anything like this before?