Amazon SNS bounce event is not fired

I have an issue with Amazon SES and Amazon SNS. following this doc : http://ift.tt/1Ecodnp

Amazon SES gives you the opportunity to call an URL when some events are fired (like bounces and deliveries). In order to configure it, we need three things :

• a valid email address
• a valid Topic in Amazon SNS (Push Notification Service)
• a valid subscription to a topic

The objective is to call the end point when sending an email to an not existant address. so I configured my email notifications like that. I just linked my topic to my address. But the bounce event is never fired. (I sent an email to fzada@azef.fr (which is of course an non existent email))

I've also tried to link the topic to the delivery event, and it works like a charm (this time I send an email to my personal address), I don't understand the difference between these two events. But in delivery case all is functional.

I configure my endpoint to http://ift.tt/1IcTJJh. In the delivery event case my URL is correctly called. In the bounce event case this same url is never called

Do I need to configure something else in order to have bounce event ?

Thank you for your help