JavaMail错误+无法识别的SSL消息，明文连接？

使用以下代码从Zimbra邮件服务器读取邮件。JavaMail错误+无法识别的SSL消息，明文连接？

String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"; 

Properties pop3Props = new Properties(); 

pop3Props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY); 
pop3Props.setProperty("mail.pop3.socketFactory.fallback", "false"); 
pop3Props.setProperty("mail.pop3.auth", "true"); 
pop3Props.setProperty("mail.pop3.port", "110"); 
pop3Props.setProperty("mail.pop3.socketFactory.port", "110"); 

URLName url = new URLName("pop3", host, 110, "",username, password); 

Session session = Session.getInstance(pop3Props, null); 
Store store = new POP3SSLStore(session, url); 
store.connect();

但是要收到此错误

javax.mail.MessagingException: Connect failed; 
    nested exception is: 
    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? 
    at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:148) 
    at javax.mail.Service.connect(Service.java:275) 
    at javax.mail.Service.connect(Service.java:156) 
    at javax.mail.Service.connect(Service.java:105) 
    at VerifyMail.readPOP3(VerifyMail.java:177) 
    at VerifyMail.main(VerifyMail.java:20) 
Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection? 
    at com.sun.net.ssl.internal.ssl.InputRecord.handleUnknownRecord(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.InputRecord.read(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readDataRecord(Unknown Source) 
    at com.sun.net.ssl.internal.ssl.AppInputStream.read(Unknown Source) 
    at java.io.BufferedInputStream.fill(Unknown Source) 
    at java.io.BufferedInputStream.read(Unknown Source) 
    at java.io.DataInputStream.readLine(Unknown Source) 
    at com.sun.mail.pop3.Protocol.simpleCommand(Protocol.java:347) 
    at com.sun.mail.pop3.Protocol.<init>(Protocol.java:91) 
    at com.sun.mail.pop3.POP3Store.getPort(POP3Store.java:201) 
    at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:144) 
    ... 5 more

任何人都可以就如何解决这方面的帮助？

来源

2012-09-11 Akbar

与此代码试图属性道具=新特性（）; props.put（“mail.pop3.auth”，true）; props.put（“mail.pop3.starttls.enable”，true）; Session session = Session.getDefaultInstance（props，null）; session.setDebug（true）; Store store = session.getStore（“pop3”）; store.connect（主机，用户名，密码）; Folder folder = store.getFolder（“INBOX”）; ERROR --- javax.mail.AuthenticationFailedException：仅在com.sun.mail.pop3.POP3Store.protocolConnect（POP3Store.java:146）进入TLS模式后有效 \t在javax.mail.Service.connect（ Service.java:275）我将不胜感激，如果有人可以帮助这个代码？ – Akbar

读这个list of common mistakes然后清理你的代码。

Gmail example也应该为你工作，虽然显然你需要改变主机名。

来源

2012-09-11 18:52:09

Bill，仍然会出现相同的错误--- javax.mail.AuthenticationFailedException：只有在进入TLS模式后才有效CODE - 属性props = System.getProperties（）; Session session = Session.getInstance（props，null）; session.setDebug true）; Store store = session.getStore（“pop3”）; store.connect（host，110，username，password）; – Akbar

已添加（props.put（“mail.pop3.starttls.enable”，true）;）并使用最新的JavaMail API进行了测试，现在得到此错误javax.mail.MessagingException：连接失败;嵌套的异常为： java.io. IOException：无法将套接字转换为com.sun.mail.pop3.POP3Store.protocolConnect处的TLS（POP3Store.java:210）导致：java.io.IOException：无法将套接字转换为TLS 引起：javax.net .ssl.SSLHandshakeException：sun.security.validator.ValidatorException：PKIX路径构建失败：sun.security.provider.certpath.SunCertPathBuilderException：找不到要求的目标的有效证书路径 – Akbar

http://www.oracle.com/technetwork/爪哇/的JavaMail/FAQ/index.html的＃installcert –

这将帮助你绕过认证过程，并直接得到SSL主机

MailSSLSocketFactory sf = null; 
    try 
    { 
     sf = new MailSSLSocketFactory(); 
    } 
    catch (GeneralSecurityException e) 
    { 
     e.printStackTrace(); 
    } 
      sf.setTrustAllHosts(true); 

    Properties pop3Props = new Properties(); 
    pop3Props.setProperty("mail.pop3.ssl.enable", "true"); 
    pop3Props.setProperty("mail.protocol.ssl.trust", "pop3.live.com"); 
    pop3Props.put("mail.pop3s.ssl.socketFactory", sf); 
    pop3Props.setProperty("mail.pop3s.port", "995"); 

    Session session = Session.getInstance(pop3Props); 

    try 
    { 
    /* Get a Store object*/ 
     Store store = session.getStore("pop3s"); 
    //process further activity 
    }

来源

2013-12-19 12:00:25

JavaMail错误+无法识别的SSL消息，明文连接？

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