Polling of email is failing with No server unavailable issue

2015-11-18 06:28:09,575 ERROR LoggingHandler::handleMessageInternal > org.springframework.integration.MessagingException: failure occurred while polling for mail
        at org.springframework.integration.mail.MailReceivingMessageSource.receive(MailReceivingMessageSource.java:73)
        at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:111)
        at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:184)
        at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:51)
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:143)
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:141)
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:273)
        at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
        at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:49)
        at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:268)
        at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53)
        at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: javax.mail.MessagingException: A79 NO Server Unavailable. 15;
  nested exception is:
        com.sun.mail.iap.CommandFailedException: A79 NO Server Unavailable. 15
        at com.sun.mail.imap.IMAPFolder.doCommand(IMAPFolder.java:2588)
        at com.sun.mail.imap.IMAPFolder.exists(IMAPFolder.java:519)
        at org.springframework.integration.mail.AbstractMailReceiver.openFolder(AbstractMailReceiver.java:237)
        at org.springframework.integration.mail.AbstractMailReceiver.receive(AbstractMailReceiver.java:257)
        at org.springframework.integration.mail.MailReceivingMessageSource.receive(MailReceivingMessageSource.java:59)
        ... 20 more
Caused by: com.sun.mail.iap.CommandFailedException: A79 NO Server Unavailable. 15
        at com.sun.mail.iap.Protocol.handleResult(Protocol.java:341)
        at com.sun.mail.imap.protocol.IMAPProtocol.doList(IMAPProtocol.java:869)
        at com.sun.mail.imap.protocol.IMAPProtocol.list(IMAPProtocol.java:821)
        at com.sun.mail.imap.IMAPFolder$1.doCommand(IMAPFolder.java:521)
        at com.sun.mail.imap.IMAPFolder.doProtocolCommand(IMAPFolder.java:2639)
        at com.sun.mail.imap.IMAPFolder.doCommand(IMAPFolder.java:2583)