為什么我不能使用JavaMail（IMAP協議）連接到我的郵箱，並收到“沒有身份驗證失敗”錯誤消息？

Question

我正在嘗試通過JavaMail IMAP協議連接到郵箱，但無法成功連接。

1. telnet成功
2. 能夠使用相同的憑據配置Outlook Web Client
3. 嘗試使用最新的JavaMail版本1.6.2（JDK7版本）
4. 也嘗試設置以下屬性： mail.imap.auth.plain.disable=true

Properties props = System.getProperties();
props .setProperty("mail.store.protocol", "imap");
props .setProperty("mail.debug.auth", "true");
props .setProperty("mail.imap.ssl.enable", "true");
props .setProperty("mail.imap.auth.plain.disable", "true");
Session session = Session.getInstance(props, new javax.mail.Authenticator() {
                @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(UserName, Password);
                }
            });
session.setDebug(true);
store = session.getStore("imap");
store.connect(ServerName, Port, UserName, Password);

DEBUG: setDebug: JavaMail version 1.6.2
DEBUG: getProvider() returning javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Oracle]
DEBUG IMAP: mail.imap.fetchsize: 16384
DEBUG IMAP: mail.imap.ignorebodystructuresize: false
DEBUG IMAP: mail.imap.statuscachetimeout: 1000
DEBUG IMAP: mail.imap.appendbuffersize: -1
DEBUG IMAP: mail.imap.minidletime: 10
DEBUG IMAP: closeFoldersOnStoreFailure
2019-06-12 20:10:11 imap : Before connect
DEBUG IMAP: trying to connect to host "<mail-server>", port 993, isSSL true
* OK The Microsoft Exchange IMAP4 service is ready.
A0 CAPABILITY
* CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=NTLM AUTH=GSSAPI SASL-IR UIDPLUS MOVE ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+
A0 OK CAPABILITY completed.
DEBUG IMAP: AUTH: PLAIN
DEBUG IMAP: AUTH: NTLM
DEBUG IMAP: AUTH: GSSAPI
DEBUG IMAP: protocolConnect login, host=<mail-server>, user=username, password=<non-null>
DEBUG IMAP: mechanism PLAIN disabled by property: mail.imap.auth.plain.disable
DEBUG IMAP: mechanism LOGIN not supported by server
A1 AUTHENTICATE NTLM
+ 
DEBUG NTLM: type 1 message: 4E 53 50 00 01 00 00 00 03 A2 00 00 00 00 00 00 2F 00 00 00 0F 00 0F 00  
<NTLMSSL encoded data>
A1 NO AUTHENTICATE failed.
DEBUG IMAP: trying to connect to host "<mail-server>", port 993, isSSL true
* OK The Microsoft Exchange IMAP4 service is ready.
B0 CAPABILITY
* CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=NTLM AUTH=GSSAPI SASL-IR UIDPLUS MOVE ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+
B0 OK CAPABILITY completed.
DEBUG IMAP: AUTH: PLAIN
DEBUG IMAP: AUTH: NTLM
DEBUG IMAP: AUTH: GSSAPI
DEBUG IMAP: protocolConnect login, host=<mail-server>, user=username, password=<non-null>
DEBUG IMAP: mechanism PLAIN disabled by property: mail.imap.auth.plain.disable
DEBUG IMAP: mechanism LOGIN not supported by server
B1 AUTHENTICATE NTLM
+ 
DEBUG NTLM: type 1 message: 4E 54 4C 53 45 4F 4C 56 41 44 53 52 56 30 39 31 
<NTLMSSL encoded data>
B1 NO AUTHENTICATE failed.
javax.mail.AuthenticationFailedException: AUTHENTICATE failed.
        at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:732)
        at javax.mail.Service.connect(Service.java:388)
        at com.maildebug.MailDebugUtil.Pop3_IMAP(MailDebugUtil.java:131)
        at com.maildebug.MailDebugUtil.main(MailDebugUtil.java:67)

Answer 1

幾乎可以肯定，您會遇到Exchange服務器錯誤，在該錯誤中宣傳它支持PLAIN身份驗證，但實際上不支持。

調試輸出未顯示您已禁用PLAIN身份驗證，也許您在設置該屬性的方式上做錯了什么？ 您能否包含您實際使用的代碼，以顯示您如何設置屬性？

另請注意，您不需要Authenticator 。

Answer 2

由於該交換服務器停止通信並導致此問題，因此IMAP協議更改為IMAPI4。 我們已經還原了這些更改。 現在，問題解決了。