**Symfony version(s) affected**: v4.3.8 **Description** ```php # framework: messenger: transports: sync: 'sync://' async: '%env(MESSENGER_TRANSPORT_DSN)%' routing: App\Message\Event\TestEvent: async default_bus: bus buses: bus: ``` RabbitMQ "messages" exchange is fanout by default. All RabbitMQ entities created by Symfony Messenger. **Actual** After last symfony update (v4.3.4 to v4.3.8) my messages drops from queue after 1-2 seconds. It's very very bad defaults! And i have no idea, how to cancel this angry helper. It's always active with very small TTL. **Expected** IMHO retry policy must check connect with RabbitMQ, not delivery to subscriber(s). My consumer can't use persistent connect and gets messages by cron. **Additional context** publish some messages (no active consumers in queue):  after couple of seconds: 