is transaction (required) by default enabled for the route sending message from one jms endpoint to another endpoint

[Wang Yan]

is transaction (required) by default enabled for the route sending message
from one jms endpoint to another endpoint like below

 from("activemq:queue:foo").to("activemq:queue:bar");

or i have to explicitly do like  below ?
Policy requried = bean(SpringTransactionPolicy.class,
"PROPAGATION_REQUIRED"));
 from("activemq:queue:foo").policy(required).to("activemq:queue:bar");

Any hints or suggestions are more than welcome!