Small Mule example showing a choice-exception-strategy (copied from the Mule docs)

choice-exception-strategy.xml

<flow name="RouteByExceptionType">
    <jms:inbound-endpoint queue="in">
        <jms:transaction action="ALWAYS_BEGIN" />
    </jms:inbound-endpoint>
    <test:component/>
    <jms:outbound-endpoint queue="out">
        <jms:transaction action="ALWAYS_JOIN" />
    </jms:outbound-endpoint>
    <choice-exception-strategy>
        <catch-exception-strategy when="exception.causedBy(com.company.BusinessException)">
            <jms:outbound-endpoint queue="dead.letter">
                <jms:transaction action="ALWAYS_JOIN" />
            </jms:outbound-endpoint>
        </catch-exception-strategy>
        <rollback-exception-strategy when="exception.causedBy(com.company.NonBusinessException)">
            <logger level="ERROR" message="Payload failing: #[payload]"/>
        </rollback-exception-strategy>
    </choice-exception-strategy>
</flow>