发送邮件时候遇到了这样的一个错误！Sending the email to the following server failed : smtp.163.com:25

org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.163.com:25

at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1189)

at org.apache.commons.mail.Email.send(Email.java:1214)

at com.zsb.util.SendEmailUtil.getSendEmail(SendEmailUtil.java:31)

at com.zsb.action.ActivateMailAction.registerPwd(ActivateMailAction.java:76)

at com.zsb.action.ActivateMailAction.doPost(ActivateMailAction.java:56)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Unknown Source)

Caused by: javax.mail.MessagingException: Exception reading response;

nested exception is:

java.net.SocketTimeoutException: Read timed out

at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2210)

at com.sun.mail.smtp.SMTPTransport.issueCommand(SMTPTransport.java:2078)

at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2111)

at com.sun.mail.smtp.SMTPTransport.finishData(SMTPTransport.java:1900)

at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1122)

at javax.mail.Transport.send0(Transport.java:195)

at javax.mail.Transport.send(Transport.java:124)

at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1179)

... 26 more

Caused by: java.net.SocketTimeoutException: Read timed out

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.read(Unknown Source)

at java.net.SocketInputStream.read(Unknown Source)

at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:110)

at java.io.BufferedInputStream.fill(Unknown Source)

at java.io.BufferedInputStream.read(Unknown Source)

at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:89)

at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2188)

... 33 more

其实这个错误很简单，因为有三种可能，

1.是端口写错了，但是我的端口 没有写错sendemail.setHostName("smtp.163.com");

2是没有开通验证，但是我上个星期已经开通过了，而且用 的时候也很顺利。这个也没有问题

3.就是密码错了，果然。我登录163邮箱查看的时候，那个发送邮箱的授权密码已经过期了！改过来就没事了