Failed to send out e-mail

com.sun.mail.smtp.SMTPSendFailedException: [EOF]

at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2057)

at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1580)

at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1097)

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

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

at hudson.tasks.Mailer$DescriptorImpl.doSendTestMail(Mailer.java:581)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:324)

at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:167)

at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:100)

at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:124)

at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)

at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)

at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)

at org.kohsuke.stapler.MetaClass$5.doDispatch(MetaClass.java:233)

at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58)

at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)

at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)

at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)

at org.kohsuke.stapler.Stapler.service(Stapler.java:238)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)

at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:135)

at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:126)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:80)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)

at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)

at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)

at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)

at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:553)

at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)

at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)

at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)

at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)

at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)

at org.eclipse.jetty.server.Server.handle(Server.java:499)

at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)

at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)

at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)

at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)

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

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

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