javax.mail.MessageRemovedException：无法在POP3Message.getContentStream中检索消息＃11

Question

我正在阅读使用Java应用程序收到的电子邮件附件。我的系统过去几天运行良好。但是今天它引发了这些错误。有谁能够帮助我？我真的很感激。

javax.mail.MessageRemovedException: can't retrieve message #11 in POP3Message.getContentStream
    at com.sun.mail.pop3.POP3Message.getRawStream(POP3Message.java:180)
    at com.sun.mail.pop3.POP3Message.getContentStream(POP3Message.java:271)
    at com.sun.mail.pop3.POP3Message.loadHeaders(POP3Message.java:635)
    at com.sun.mail.pop3.POP3Message.getHeader(POP3Message.java:383)
    at javax.mail.internet.MimeMessage.getContentType(MimeMessage.java:964)
    at MailReader.readMail(MailReader.java:51)
    at MailReader.run(MailReader.java:30)
    at java.util.TimerThread.mainLoop(Unknown Source)
    at java.util.TimerThread.run(Unknown Source)