Question

遵循此POST中提到的所有步骤;我可以使用 gmail 凭据从我的Android设备以编程方式发送电子邮件。但是一旦我切换到第三方 SMTP 提供商（由我的ISP提供），程序就会开始抛出以下异常：

javax.mail.MessagingException: Could not connect to SMTP host: cp-10.webhostbox.net, port: 465;
 nested exception is:
javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1391)
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 com.**.oms.utils.GMailSender.sendMail(GMailSender.java:66)
at com.**.oms.NewUserSignUp$1.run(NewUserSignUp.java:58)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:409)
at com.android.org.conscrypt.OpenSSLSocketImpl$SSLInputStream.<init>(OpenSSLSocketImpl.java:661)
at com.android.org.conscrypt.OpenSSLSocketImpl.getInputStream(OpenSSLSocketImpl.java:632)
at com.sun.mail.smtp.SMTPTransport.initStreams(SMTPTransport.java:1449)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1366)
... 12 more
Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
at com.android.org.conscrypt.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:282)
at com.android.org.conscrypt.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:202)
at com.android.org.conscrypt.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:611)
at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:405)
... 16 more
Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
... 21 more

下面提到的是我正在设置的属性集（包括接受所有证书的属性）：

Properties props = new Properties();   
        props.setProperty("mail.transport.protocol", "smtp");   
        props.setProperty("mail.host", mailhost);   
        props.put("mail.smtp.auth", "true");   
        props.put("mail.smtp.debug", "true");   
        props.put("mail.smtp.port", "465");   
        props.put("mail.smtp.socketFactory.port", "465");   
        props.put("mail.smtp.ssl.checkserveridentity", false);
        props.setProperty("mail.smtp.ssl.trust", "*");
        props.put("mail.smtp.starttls.enable", true);
        props.put("mail.smtp.socketFactory.class",   
                "javax.net.ssl.SSLSocketFactory");   
        props.put("mail.smtp.socketFactory.fallback", "false");   
        props.setProperty("mail.smtp.quitwait", "false");

正如您所看到的，我已经接受了所有证书，但仍然会收到此证书错误。有人可以解释一下这种行为及其解决方案。

Answer 1

首先，get rid of all the socket factory stuff。

您使用的是什么版本的JavaMail？ JavaMail debug output显示什么？如果您使用的是旧版JavaMail，则它不支持您设置的属性，您可能需要使用this approach。

Android中的自动电子邮件发送失败

1 个答案: