Javamail 服务器连接超时

Question

我正在尝试使用 JavaMail 连接到邮件服务器。我收到异常。

我也尝试过使用 POP3，但没有成功。

错误：

javax.mail.MessagingException: Connection timed out: connect

这是由于：

java.net.ConnectException: Connection timed out: connect

我的代码：

Properties props = System.getProperties();
props.setProperty("mail.store.protocol", "imaps");
Session session = Session.getDefaultInstance(props, null);

try
{
    Store store = session.getStore("imaps");
    MailSSLSocketFactory socketFactory = new MailSSLSocketFactory();
    socketFactory.setTrustAllHosts(true);
    props.put("mail.imaps.ssl.socketFactory", socketFactory);
    store.connect(host,user,password);
}
catch (MessagingException ex){
    System.out.println(ex.toString());
}

Properties properties = new Properties();
properties.put("mail.pop3.host", host);
properties.put("mail.pop3.port", port);
// SSL setting
properties.setProperty("mail.pop3.socketFactory.class", 
"javax.net.ssl.SSLSocketFactory");
properties.setProperty("mail.pop3.socketFactory.fallback", "false");
properties.setProperty("mail.pop3.socketFactory.port", String.valueOf(port));

Session session = Session.getDefaultInstance(properties);
// connects to the message store
Store store = session.getStore("pop3");
store.connect(user, password);
System.out.println(store.isConnected());
System.out.println("connection succesful");

// opens the inbox folder
Folder folderInbox = store.getFolder("INBOX");
folderInbox.open(Folder.READ_ONLY);

Answer 1

我可以使用下面的方法建立连接。我不好，我以前使用过不合适的主机。

    Properties props = System.getProperties();
    props.setProperty("mail.store.protocol", "imaps");

    Session session = Session.getInstance(props, null);
    session.setDebug(true);
    Store store = session.getStore("imaps");

    MailSSLSocketFactory socketFactory = new MailSSLSocketFactory();
    socketFactory.setTrustAllHosts(true);

    props.put("mail.imaps.ssl.socketFactory", socketFactory);
    System.out.println("store is "+store.isConnected());

    store.connect("mail.abc.com","xyz@abc.com", "******");
    System.out.println("Now the store  is  "+store.isConnected());

Javamail 服务器连接超时

Javamail server connection time out

java

email

jakarta-mail