And try adding a log step in the route
<camel:route>
<camel:from uri="activemq:queue:inQueue" />
<camel:setExchangePattern pattern="InOut"/>
<camel:to uri="bean:requestHandler?method=handleRequest" />
<camel:to uri="log:reply" />
</camel:route>
And also show us the code for your requestHandler bean what it does, can let us help you better.