Using and understanding the zimbraAuthFallbackToLocal attribute

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This article applies to the following ZCS versions.

ZCS 8.6 Article ZCS 8.6ZCS 8.5 Article ZCS 8.5ZCS 8.0 Article ZCS 8.0

Using and understanding the zimbraAuthFallbackToLocal attribute


When choosing the external LDAP Authentification method, end users are able to log in with both LDAP password and Zimbra password.


This is the content of the zimbraAuthFallbackToLocal attribute.

    fallback to local auth if external mech fails

               type : boolean
              value : 
           callback : 
          immutable : false
        cardinality : single
         requiredIn : 
         optionalIn : domain
              flags : 
           defaults : 
                min : 
                max : 
                 id : 257
    requiresRestart : 
              since : 
    deprecatedSince : 

If the attribute 'zimbraAuthFallbackToLocal' is set to 'TRUE', authentication falls back to Zimbra's ldap if the external ldap gives an error.

To prevent this in case that your Environment doesn't need it, disable it:

zmprov md zimbraAuthFallbackToLocal FALSE

Additional Content

  • Not related content.

Verified Against: Zimbra Collaboration 8.6, 8.5, 8.0 Date Created: 04/10/2015
Article ID: Date Modified: 2015-04-24

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Wiki/KB reviewed by SME1 SME2 Copyeditor Last edit by Jorge de la Cruz
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