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Claus Ibsen commented on CAMEL-2339: ------------------------------------ There {{DefaultPollingConsumerPollStrategy}} will log at WARN with the ERROR in the {{rollback}} method. {code} public boolean rollback(Consumer consumer, Endpoint endpoint, int retryCounter, Exception e) throws Exception { log.warn("Consumer " + consumer + " could not poll endpoint: " + endpoint.getEndpointUri() + " caused by: " + e.getMessage(), e); // we do not want to retry return false; } {code} So you should be able to see this WARN log somewhere > ScheduledPollConsumer.run swallows Errors > ----------------------------------------- > > Key: CAMEL-2339 > URL: https://issues.apache.org/activemq/browse/CAMEL-2339 > Project: Apache Camel > Issue Type: Bug > Affects Versions: 2.0.0 > Reporter: Jörn Kottmann > > We have a camel route which uses the mail component > and polls from an IMAP mail server. > Through a deployment mistake the javax.activation.DataSource > class was not available and resulted in an > java.lang.NoClassDefFoundError Error which was swallowed > and not logged. > This resulted in a silent failure of the mail component. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.