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Thread: IMAP Authentication against user's mailbox

  1. #1
    vpetersson is offline Junior Member
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    Apr 2009
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    Default IMAP Authentication against user's mailbox


    First, let me say that I'm rather novice when it comes to Zimbra, but I hope you guys can help me out.

    I'm looking for a way to authenticate against Zimbra users via the admin account (IMAP). I found this thread that suggest that the login-string would be something like:

    . LOGIN user*admin adminpassword
    However, the user clearly states that it didn't work, hence this post.

    I've search the forum and the web for some time, but I can't find any clear answers and/or official documentation on this.

    I'm also curious if this feature is enabled by default.

  2. #2
    vpetersson is offline Junior Member
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    Apr 2009
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    Ok, I configured a Zimbra instance (zcs-7.1.3) to test this and I can confirm that authenticating this way does not work. Since imapsync apparently support this method of authentication, I'm curious if anyone know how this actually works.

  3. #3
    ppearl's Avatar
    ppearl is offline Zimbra Employee
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    Jul 2007
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    Default Sasl auth=plain

    Zimbra supports SASL AUTH=PLAIN. You should be able to authenticate as a target user using only an admin username/password and the target username -- no user passwords are referenced in this case. You may find that you need to use SSL by default too.

    For example, imapsync takes advantage of this capability via --authuser1/--authuser2 arguments.

    Some references:
    imap admin access
    how can I use imapsync with admin access and no users passwords
    Talk:User Migration - Zimbra :: Wiki

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