There is no risk of losing messages, as the send is still atomic operation. So the producer will be notified that send succeeded only when all destinations have the message.
Regards -- Dejan Bosanac - http://twitter.com/dejanb ----------------- The experts in open source integration and messaging - http://fusesource.com ActiveMQ in Action - http://www.manning.com/snyder/ Blog - http://www.nighttale.net