title: Symfony how to validate an EmailType by not allowing emails without an ending dot something
body: <p>Currently the <a href="http://symfony.com/doc/current/reference/forms/types/email.html" rel="nofollow noreferrer">EmailType</a> of Symfony allows any email like:</p>
  
  <p><code>"whatever@domain"</code></p>
  
  <p>So there is no validation against the domain of the email</p>
  
  <p>what is the best way to make it accepts only email like:</p>
  
  <p><code>"whatever@domain.something"</code></p>
  
  <p>so that the domain should contain at least one dot.</p>
  
  <p>Since it should be a common issue, I was wondering if there's already a built-in way to accomplish it.</p>