Android：javax.mail.MessagingException：A3 NO SELECT不安全登录

Question

Javamail第一次收到网易邮件时，会出现这个错误，上网搜索了很多信息，发现需要验证，但这个链接似乎没有验证链接，链接进入下一个：

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错误日志：

  

javax.mail.MessagingException：A3 NO SELECT不安全登录。请联系kefu@188.com寻求帮助;                                                                               嵌套异常是：                                                                               com.sun.mail.iap.CommandFailedException：A3 NO SELECT不安全登录。请联系kefu@188.com寻求帮助                                                                                 在com.sun.mail.imap.IMAPFolder.open（IMAPFolder.java:1071）                                                                                 在com.sun.mail.imap.IMAPFolder.open（IMAPFolder.java:999）                                                                                 at com.chaoxing.email.service.MailHelper.getAllEmailUIDList（MailHelper.java:454）                                                                                 在com.chaoxing.email.utils.EmailPollUtil $ 1.run（EmailPollUtil.java:96）                                                                                 在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1113）                                                                                 at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:588）                                                                                 在java.lang.Thread.run（Thread.java:818）                                                                              引起：com.sun.mail.iap.CommandFailedException：A3 NO SELECT不安全登录。请联系kefu@188.com寻求帮助                                                                                 在com.sun.mail.iap.Protocol.handleResult（Protocol.java:397）                                                                                 at com.sun.mail.imap.protocol.IMAPProtocol.select（IMAPProtocol.java:1245）                                                                                 在com.sun.mail.imap.IMAPFolder.open（IMAPFolder.java:1056）                                                                                 在com.sun.mail.imap.IMAPFolder.open（IMAPFolder.java:999）                                                                                 at com.chaoxing.email.service.MailHelper.getAllEmailUIDList（MailHelper.java:454）                                                                                 在com.chaoxing.email.utils.EmailPollUtil $ 1.run（EmailPollUtil.java:96）                                                                                 在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1113）                                                                                 at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:588）                                                                                 在java.lang.Thread.run（Thread.java:818）

我该怎么办？