java - 无法通过 javamail 通过 POP3 协议(protocol)获取 yahoo 邮件

Question

我有一些代码如下:

Properties props = System.getProperties();

        //set mail protocol 
        //props.setProperty("mail.store.protocol", "imaps");
        props.setProperty("mail.store.protocol", "pop3s");

        //create new store 
        Session session = Session.getDefaultInstance(props);

        //store = session.getStore("imaps");
        store = session.getStore("pop3s");


        store.connect("pop.mail.yahoo.com", 995, "MyYahooUserName", "MyPassword");
        //store.connect("imap.next.mail.yahoo.com", 993, "MyYahooUserName", "MyPassword");
        isConnect = true;

当我尝试 IMAP 协议(protocol)时，它可以工作，但使用 POP3 时，我在下面遇到异常，我不知道为什么

SEVERE: null
javax.mail.AuthenticationFailedException: EOF on socket
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:208)
at javax.mail.Service.connect(Service.java:295)
at gmailutilities.GmailUtilities.connect(GmailUtilities.java:88)
at gmailutilities.Main.main(Main.java:29)
javax.mail.MessagingException: Not connected
at com.sun.mail.pop3.POP3Store.checkConnected(POP3Store.java:408)
at com.sun.mail.pop3.POP3Store.getDefaultFolder(POP3Store.java:357)
at gmailutilities.GmailUtilities.openFolder(GmailUtilities.java:103)
at gmailutilities.Main.main(Main.java:30)

*有人知道为什么吗？请帮助我。谢谢大家! *

Answer 1

请注意，免费的 Yahoo!邮件帐户不允许 POP3 或 SMTP 访问。您必须购买 Yahoo!用于获取 POP3 和 SMTP 访问的 Mail Plus 帐户。