Question

I want to access a shared mailbox (NOT FOLDER) via Javamail API (1.4.5) using IMAP(s) with plain logon. The mailserver is a Exchange Server 2010.

User: user1 ([e-mail])
pwd: xxxx

shared mailbox: [e-mail]

I´ve managed to get access to the user1 – mailbox:

    Session session = Session.getInstance(properties, new ExchangeAuthenticator(username, password));
        session.setDebug(true);

        Store store = session.getStore("imaps");

        store.connect(imapHost, username, password);

properties:

mail.imaps.socketFactory.port = 993

mail.imaps.starttls.enable = true

mail.imaps.socketFactory.class = javax.net.ssl.SSLSocketFactory

mail.imaps.socketFactory.fallback = false

username = [e-mail]

password = xxxx

–> this works just fine! But now i want to access the additional mailbox by changing the login-String:

username=[e-mail]/shared_MB

–> unfortunately I´m getting an “NO AUTHENTICATE” message:

   DEBUG IMAP: AUTHENTICATE PLAIN command result: A1 NO AUTHENTICATE failed.

I was able to get access with Thunderbird, so I think there is something missing in my code…

Answer 1

I am doing the following and it is working fine for me

properties = System.getProperties();
properties.setProperty("mail.imaps.auth.plain.disable", "true");
properties.setProperty("mail.imaps.auth.ntlm.disable", "true");
Session session = Session.getInstance(properties, null);
store = session.getStore("imaps");
store.connect("HOST", PORT, "DOMAIN\\USER\\SHAREDACCOUNT","pwd");

Here
DOMAIN\\USER\\SHAREDACCOUNT would be like this
suppose email account is [e-mail] then
abc\\tarun\\shared_MB

You have to also enter the password of [e-mail] account.