'Override bounce management to unsubscribe bouncing addresses'

@api.multi
def message_receive_bounce(self, email, partner, mail_id=None):

    for p in partner:
        if (p.message_bounce >= self.MAX_BOUNCE_LIMIT):
            self._action_unfollow(p)
    return super(Channel, self).message_receive_bounce(email, partner, mail_id=mail_id)
