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java.lang.IllegalStateException: Folder not open at javax.mail.Folder.getMessages(Folder.java:925) at org.mule.providers.email.RetrieveMessageReceiver.poll(RetrieveMessageReceiver.java:304) at org.mule.providers.AbstractPollingMessageReceiver.run(AbstractPollingMessageReceiver.java:115) at edu.emory.mathcs.backport.java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442) at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.runAndReset(FutureTask.java:198) at edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:138) at edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:238) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987) at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528) at java.lang.Thread.run(Thread.java:595)