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我正在使用 java 程序连接到邮箱并从邮箱中的文件夹中读取电子邮件。我正在使用Java Mail 1.5.6Java 8。下面是我的连接代码：

IMAPSSLStore returnImapConnectStore() throws InvalidKeyException,
    NoSuchAlgorithmException, NoSuchPaddingException,
    IllegalBlockSizeException, BadPaddingException,
    AuthenticationFailedException, IllegalStateException {

        IMAPSSLStore store = null;

        Properties props = System.getProperties();

        props.setProperty("mail.imaps.starttls.enable", "true");
        props.setProperty("mail.imaps.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        props.setProperty("mail.imaps.auth.ntlm.disable", "true");
        props.setProperty("mail.imaps.auth.plain.disable", "true");
        props.setProperty("mail.imaps.auth.gssapi.disable", "true");
        props.setProperty("mail.imaps.ssl.enable", "true");

        String host = "imapmail.company.com";
        final String username = "username";

        final String password = "password"


        try {
            Session session = Session.getInstance(props,
                    new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(username,
                            password);
                }
            });

            session.setDebug(true);
            store = new IMAPSSLStore(session, null);
            store.connect(host, 993, username, password);

        } catch (Exception e) {
            System.err.println("Connection to server error.....");
            e.printStackTrace();
        }
        return (store);
    }

该程序运行良好，直到username. 当我更新密码并运行程序时，出现以下错误：

DEBUG: setDebug: JavaMail version 1.5.6
DEBUG IMAPS: mail.imap.fetchsize: 16384
DEBUG IMAPS: mail.imap.ignorebodystructuresize: false
DEBUG IMAPS: mail.imap.statuscachetimeout: 1000
DEBUG IMAPS: mail.imap.appendbuffersize: -1
DEBUG IMAPS: mail.imap.minidletime: 10
DEBUG IMAPS: enable STARTTLS
DEBUG IMAPS: closeFoldersOnStoreFailure
DEBUG IMAPS: trying to connect to host "imapmail.company.com", port 993, isSSL true
* OK The Microsoft Exchange IMAP4 service is ready.
A0 CAPABILITY
* CAPABILITY IMAP4 IMAP4rev1 AUTH=NTLM AUTH=GSSAPI AUTH=PLAIN UIDPLUS CHILDREN IDLE NAMESPACE LITERAL+
A0 OK CAPABILITY completed.
DEBUG IMAPS: AUTH: NTLM
DEBUG IMAPS: AUTH: GSSAPI
DEBUG IMAPS: AUTH: PLAIN
DEBUG IMAPS: protocolConnect login, host=imapmail.company.com, user=username, password=<non-null>
DEBUG IMAPS: mechanism PLAIN disabled by property: mail.imaps.auth.plain.disable
DEBUG IMAPS: mechanism LOGIN not supported by server
DEBUG IMAPS: mechanism NTLM disabled by property: mail.imaps.auth.ntlm.disable
DEBUG IMAPS: mechanism XOAUTH2 disabled by property: mail.imaps.auth.xoauth2.disable
DEBUG IMAPS: LOGIN command trace suppressed
DEBUG IMAPS: LOGIN command result: A1 NO Server Unavailable. 15
DEBUG IMAPS: trying to connect to host "imapmail.company.com", port 993, isSSL true
* OK The Microsoft Exchange IMAP4 service is ready.
A0 CAPABILITY
* CAPABILITY IMAP4 IMAP4rev1 AUTH=NTLM AUTH=GSSAPI AUTH=PLAIN UIDPLUS CHILDREN IDLE NAMESPACE LITERAL+
A0 OK CAPABILITY completed.
DEBUG IMAPS: AUTH: NTLM
DEBUG IMAPS: AUTH: GSSAPI
DEBUG IMAPS: AUTH: PLAIN
DEBUG IMAPS: protocolConnect login, host=imapmail.company.com, user=username, password=<non-null>
DEBUG IMAPS: mechanism PLAIN disabled by property: mail.imaps.auth.plain.disable
DEBUG IMAPS: mechanism LOGIN not supported by server
DEBUG IMAPS: mechanism NTLM disabled by property: mail.imaps.auth.ntlm.disable
DEBUG IMAPS: mechanism XOAUTH2 disabled by property: mail.imaps.auth.xoauth2.disable
DEBUG IMAPS: LOGIN command trace suppressed
DEBUG IMAPS: LOGIN command result: A1 NO Server Unavailable. 15
Connection to server error.....
javax.mail.AuthenticationFailedException: Server Unavailable. 15
                at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:725)
                at javax.mail.Service.connect(Service.java:388)

我再次尝试使用旧密码，它给了我： DEBUG IMAPS: LOGIN command result: A1 NO LOGIN failed. Connection to server error..... javax.mail.AuthenticationFailedException: LOGIN failed.

我不确定我应该如何解决这个错误。我在网上搜索，但没有找到任何有用的资源来解决我的问题。

任何帮助，将不胜感激。谢谢！

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