CODEWITHSUNDEEP
javajakarta-mail
Arya
Arya

Reputation: 8995

SSLHandshakeException: Remote host closed connection during handshake

I have the following method for retrieving messages from Gmail using imap

public static void main(String[] args)
    {
        Properties props = new Properties();
        try
        {
            props.load(new FileInputStream(new File("smtp.properties")));
            Session session = Session.getDefaultInstance(props, null);

            Store store = session.getStore("imaps");
            store.connect("smtp.gmail.com", "******@gmail.com", "mypass");

            Folder inbox = store.getFolder("inbox");
            inbox.open(Folder.READ_ONLY);
            int messageCount = inbox.getMessageCount();

            Message[] messages = inbox.getMessages();
            System.out.println("------------------------------");
            for (int i = 0; i < 10; i++)
            {
                System.out.println("Mail Subject:- " + messages[i].getSubject());
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }

my smtp.properties contains

 mail.smtp.host=smtp.gmail.com
 mail.smtp.socketFactory.port=465
 mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
 mail.smtp.auth=true
 mail.smtp.port=465

I get the following when I run the program

javax.mail.MessagingException: Remote host closed connection during handshake;
  nested exception is:
    javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
    at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:695)
    at javax.mail.Service.connect(Service.java:345)
    at javax.mail.Service.connect(Service.java:226)
    at gmailsmpt.Main.main(Main.java:25)
Caused by: javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:532)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:337)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:229)
    at com.sun.mail.iap.Protocol.<init>(Protocol.java:116)
    at com.sun.mail.imap.protocol.IMAPProtocol.<init>(IMAPProtocol.java:121)
    at com.sun.mail.imap.IMAPStore.newIMAPProtocol(IMAPStore.java:710)
    at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:659)
    ... 3 more
Caused by: java.io.EOFException: SSL peer shut down incorrectly
    at sun.security.ssl.InputRecord.read(Unknown Source)
    ... 14 more

How can I fix the issue?

Upvotes: 3

Views: 9150

Answers (4)

sirlucas
sirlucas

Reputation: 11

The problem is that the default TLS version in JAVA jre1.8.0_141 1.0, however due to vulnerabilities in 1.0 a lot of email servers no longer accept connections. To instead use 1.2 directly in code this instruction worked for me when creating properties for sending mail:

props.put("mail.smtp.ssl.protocols", "TLSv1.2");

For example:

Properties props = System.getProperties();
props.put("mail.smtp.host", mailHost);
props.put("mail.smtps.auth", mailAuth);
props.put("mail.transport.protocol", mailProtocol);
props.put("mail.smtp.ssl.protocols", "TLSv1.2");

// Get a Session object
Session sess = Session.getInstance(props, null);

// construct the message
MimeMessage msg = new MimeMessage(sess);
msg.setFrom(new InternetAddress(mailUser));

Also note, you could just set that same property in the properties file you're loading (smtp.properties) at the start of your try block.

Upvotes: 1

user1134090
user1134090

Reputation: 11

try adding below to the properties: properties.put("mail.smtp.ssl.trust", "smtp.gmail.com");

Upvotes: 0

Bill Shannon
Bill Shannon

Reputation: 29971

First, clean up all these common mistakes. You don't need any socket factories.

Then try these connection debugging tips.

Possibly you have a firewall or anti-virus program that's preventing you from connecting.

Upvotes: 1

Sebastian
Sebastian

Reputation: 415

Are there more stacktraces? Older Java versions have problems with TLS handshakes with RSA keys with more than 1024 bit (may be also with keys having exactly bit byte).

This was fixed in Java 1.7 or Java 1.8.

Upvotes: 0

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