An error has occurred with sending the test email:

com.atlassian.mail.MailException: javax.mail.MessagingException: Exception reading response;

  nested exception is:

    java.net.SocketTimeoutException: Read timed out

    at com.atlassian.mail.server.impl.SMTPMailServerImpl.sendWithMessageId(SMTPMailServerImpl.java:)

    at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:)

    at com.atlassian.jira.plugins.mail.webwork.SendTestMail.doExecute(SendTestMail.java:)

    at webwork.action.ActionSupport.execute(ActionSupport.java:)

    at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:)

    at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:)

    at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:)

    at webwork.interceptor.ChainedInterceptor.intercept(ChainedInterceptor.java:)

    at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:)

    at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:)

.....
错误较多省略....

.....

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

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

    at java.net.SocketInputStream.socketRead(SocketInputStream.java:)

    at java.net.SocketInputStream.read(SocketInputStream.java:)

    at java.net.SocketInputStream.read(SocketInputStream.java:)

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

    at java.io.BufferedInputStream.fill(BufferedInputStream.java:)

    at java.io.BufferedInputStream.read(BufferedInputStream.java:)

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

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

    ...  more

AuthenticationFailedException:  Error: authentication failed

　　不幸的是, 没有连接是可能的。审查以下错误并纠正:

• SocketTimeoutException: Read timed out