嘗試在 Java 中發送郵件時出現“異常讀取響應”錯誤

Question

這是一個從java發送電子郵件的小代碼。

public static void sendMail(){
    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.host", "mail.domain.tld");
    props.put("mail.smtp.debug", "true");
            Session session = Session.getInstance(props,
      new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("sender@domain.tdl", "pwd");
        }
      });
    try {
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("sender@domain.tdl"));
        message.setRecipients(Message.RecipientType.TO,
            InternetAddress.parse("receiver@yahoo.fr"));
        message.setSubject("Testing Subject");
        message.setContent("This is a test <b>HOWTO<b>", "text/html; charset=ISO-8859-1");
        Transport.send(message);
        System.out.println("Done");
    } catch (MessagingException e) {
        throw new RuntimeException(e);
    }
}

但是運行它我有這個錯誤

Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: Exception reading response;
  nested exception is:
    java.net.SocketException: Software caused connection abort: recv failed
    at Test.main(Test.java:112)
Caused by: javax.mail.MessagingException: Exception reading response;
  nested exception is:
    java.net.SocketException: Software caused connection abort: recv failed
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2445)
    at com.sun.mail.smtp.SMTPTransport.issueCommand(SMTPTransport.java:2307)
    at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2340)
    at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1808)
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1285)
    at javax.mail.Transport.send0(Transport.java:255)
    at javax.mail.Transport.send(Transport.java:124)
    at Test.main(Test.java:107)
Caused by: java.net.SocketException: Software caused connection abort: recv failed
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:152)
    at java.net.SocketInputStream.read(SocketInputStream.java:122)
    at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:126)
    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:104)
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2425)
    ... 7 more

我不明白錯誤的原因，因為這段代碼過去對我有用。 這是我正在使用的罐子：

• dsn-1.6.0
• gimap-1.6.0
• imap-1.6.0
• javax.mail-1.6.0
• javax.mail-api-1.6.0
• 日志郵件處理程序-1.6.0
• mailapi-1.6.0
• pop3-1.6.0
• smtp-1.6.0

@Bill 要求修改后，這是我的新錯誤

Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: Could not connect to SMTP host: mail.hereka.org, port: 25;
  nested exception is:
    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
    at Test.main(Test.java:134)
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: mail.hereka.org, port: 25;
  nested exception is:
    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2196)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:726)
    at javax.mail.Service.connect(Service.java:366)
    at javax.mail.Service.connect(Service.java:246)
    at javax.mail.Service.connect(Service.java:267)
    at javax.mail.Transport.send0(Transport.java:252)
    at javax.mail.Transport.send(Transport.java:174)
    at Test.main(Test.java:130)
Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
    at sun.security.ssl.InputRecord.handleUnknownRecord(InputRecord.java:671)
    at sun.security.ssl.InputRecord.read(InputRecord.java:504)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:927)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1312)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1339)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1323)
    at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:619)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:393)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:238)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2160)
    ... 7 more

但是如果我刪除了 ssl 屬性，這是新的錯誤

Exception in thread "main" java.lang.RuntimeException: javax.mail.MessagingException: Exception reading response;
  nested exception is:
    java.net.SocketException: Software caused connection abort: recv failed
    at Test.main(Test.java:134)
Caused by: javax.mail.MessagingException: Exception reading response;
  nested exception is:
    java.net.SocketException: Software caused connection abort: recv failed
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2445)
    at com.sun.mail.smtp.SMTPTransport.issueCommand(SMTPTransport.java:2307)
    at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2340)
    at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1808)
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1285)
    at javax.mail.Transport.send0(Transport.java:255)
    at javax.mail.Transport.send(Transport.java:174)
    at Test.main(Test.java:130)
Caused by: java.net.SocketException: Software caused connection abort: recv failed
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:152)
    at java.net.SocketInputStream.read(SocketInputStream.java:122)
    at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:126)
    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:104)
    at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2425)
    ... 7 more

謝謝

Answer 1

這與 jar 無關，而是與 SMTP 服務器錯誤有關。 你可以嘗試使用

telnet mail.domain.tld

並嘗試連接到主機。 我建議你包括一個端口

props.put("mail.smtp.port", "portnumber");

您可以嘗試使用標准端口 25（不安全）或 587（安全）。