收邮件l连续刷新的时候报这个异常大家帮帮忙啊~~

javax.mail.MessagingException: Open failed;
  nested exception is:
java.io.EOFException: EOF on socket
at com.sun.mail.pop3.POP3Folder.open(POP3Folder.java:215)
at org.claros.commons.mail.protocols.Pop3ProtocolImpl.getFolder(Pop3ProtocolImpl.java:335)
at org.claros.commons.mail.protocols.Pop3ProtocolImpl.fetchAllHeaders(Pop3ProtocolImpl.java:159)
at org.claros.intouch.webmail.controllers.DbFolderControllerImpl.getHeadersByFolder(DbFolderControllerImpl.java:359)
at org.claros.intouch.webmail.services.ListHeadersService.doPost(ListHeadersService.java:171)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.claros.intouch.common.filters.GZIPFilter.doFilter(GZIPFilter.java:26)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.EOFException: EOF on socket
at com.sun.mail.pop3.Protocol.simpleCommand(Protocol.java:364)
at com.sun.mail.pop3.Protocol.<init>(Protocol.java:104)
at com.sun.mail.pop3.POP3Store.getPort(POP3Store.java:214)
at com.sun.mail.pop3.POP3Folder.open(POP3Folder.java:199)
... 21 more各位大哥们帮帮小弟~~登陆邮件系统后等一会点收邮件在刷新的时候就报这个异常但是我在ECLIPSE里开BEBUG的时候就不报异常~~~各位大哥们指导我下~~~谢过~~~