javax.net.ssl.SSLException: Nicht erkannte SSL-Nachricht, Klartextverbindung

Question

Ich versuche, eine E-Mail von der Feder-Anwendung zu senden. Ich habe alle JAR-Dateien enthalten, aber es zeigt diese Ausnahme:

javax.mail.MessagingException: Exception reading response; 
    nested exception is: 
    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? 
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1611) 
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1369) 
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412) 
    at javax.mail.Service.connect(Service.java:310) 
    at javax.mail.Service.connect(Service.java:169) 
    at javax.mail.Service.connect(Service.java:118) 
    at javax.mail.Transport.send0(Transport.java:188) 
    at javax.mail.Transport.send(Transport.java:118) 
    at org.symb.leavemanagement.mail.SampleMail.sentMail(SampleMail.java:65) 
    at org.symb.leavemanagement.controller.AdminController.processRegistratingUser(AdminController.java:196) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:601) 
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175) 
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:421) 
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:409) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:774) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
    at java.lang.Thread.run(Thread.java:722) 
Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? 
    at sun.security.ssl.InputRecord.handleUnknownRecord(InputRecord.java:541) 
    at sun.security.ssl.InputRecord.read(InputRecord.java:374) 
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:893) 
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1294) 
    at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:848) 
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:102) 
    at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:110) 
    at java.io.BufferedInputStream.fill(BufferedInputStream.java:235) 
    at java.io.BufferedInputStream.read(BufferedInputStream.java:254) 
    at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:88) 
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1589) 
    ... 38 more 

Answer 1

Sie versuchen, eine SSL-Verbindung zu einem nicht SSL-Endpunkt zu tun. Wenn Sie das ändern, sollte es funktionieren.

Ich habe festgestellt, dass die meisten Tutorials über die Integration Ihrer E-Mail mit Outlook/Thunderbird/etc SSL/TSL zu einer nicht-SSL-Verbindung aufrufen. Im Allgemeinen habe ich herausgefunden (und das kann sich ändern, aber es ist die Norm), dass nur SSL Port 465 SSL ist. 587 ist TSL (kein SSL) und 25 ist einfach.