FOSUserBundle not sending registration email
<p>I have found a few topics related to the same issues, but the solution for them was a miss-configuration of the smtp settings.</p>

<p>I am using symfony 3.0 and latest FOSUserBundle. My config settings are:</p>

<pre><code>fos_user:
    db_driver: orm
    firewall_name: main
    user_class: AppBundle\Entity\User
    resetting:
        email:
            template: email/password_resetting.email.twig
    registration:
        form:
            type: AppBundle\Form\RegistrationType
        confirmation:
            enabled: true
            from_email:
                address:        registration@site.com
                sender_name:    'Our Team'


swiftmailer:
    transport: "%mailer_transport%"
    host:      "%mailer_host%"
    port:      "%mailer_port%"
    username:  "%mailer_user%"
    password:  "%mailer_password%"
    spool:     { type: memory }
</code></pre>

<p>I am able to send other emails from the same project, using the same  swiftmailer settings.
  I have checked the web developer tool and the email is prepared for sending 
<a href="http://i.stack.imgur.com/TKf0x.png" rel="nofollow">Web profiler - email area</a>
  The registration email is not received in the inbox or spam folders.</p>

<p>Could you let me know if I have missed anything in the configuration files that prevents the registration email from being sent?</p>

<p>Thanks,
Lucia</p>