问题:

I am using java mail to send emails over smtp. The smtp settings given below:

        Properties props = new Properties();         Object put = props.put("mail.smtp.host", smtpHost);         props.put("mail.smtp.user", smtpUser);         props.put("mail.smtp.auth", true);         props.put("mail.debug", mailDebug);         props.put("mail.smtp.port", port);

The smtp credentials have been verified by telnetting to my smtpHost with the above details. However, I get the following exception when I use the above settings in java mail.

        250-AUTH PLAIN LOGIN         250-STARTTLS         250 HELP         DEBUG SMTP: Found extension "SIZE", arg "52428800"         DEBUG SMTP: Found extension "8BITMIME", arg ""         DEBUG SMTP: Found extension "PIPELINING", arg ""         DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN"         DEBUG SMTP: Found extension "STARTTLS", arg ""         DEBUG SMTP: Found extension "HELP", arg ""         DEBUG SMTP: Attempt to authenticate         DEBUG SMTP: check mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM         DEBUG SMTP: AUTH LOGIN command trace suppressed         DEBUG SMTP: AUTH LOGIN failed         Nov 29, 2012 11:54:40 AM com.Test main         SEVERE: null         javax.mail.AuthenticationFailedException: 535 Incorrect authentication data

When I add the line :

        props.put("mail.smtp.starttls.enable", false);

It again generates the same authentication failed exception.

If I set mail.smtp.starttls.enable to true, the authentication succeeds, but I get the following exception:

     220 TLS go ahead      Nov 28, 2012 5:32:36 PM com.Test main      SEVERE: null      javax.mail.MessagingException: Could not convert socket to TLS;      nested exception is:     javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target     at com.sun.mail.smtp.SMTPTransport.startTLS(SMTPTransport.java:1918)     at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:652)     at javax.mail.Service.connect(Service.java:317)

After going through various forum threads regarding the second exception, I ran the InstallCert program to fetch the server's self-signed certificate. The InstallCert throws the following exception:

            Opening connection to mydomain.com.au:443...             Starting SSL handshake...             javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?                     at sun.security.ssl.InputRecord.handleUnknownRecord(InputRecord.java:542)                     at sun.security.ssl.InputRecord.read(InputRecord.java:374)                     at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:850)                     at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1190)                     at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1217)                     at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1201)                     at InstallCert.main(

标签

smtp

ssl

Java mail without ssl - PKIX path building failed:

问题: