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"Pre-Windows 2000 Compatible Access" group question w/ Exchange 2003

Posted on 2006-07-20
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Last Modified: 2007-12-19
I'm running DomainPrep in preparing to install Exchange 2003 server.  I have just been following the deployment tools checklist to install it.  Anyway, I got this message:

The domain has been identified as an insecure domain for mail-enabled groups with hidden DL membership.  Hidden DL membership will be exposed to members of the built-in "Pre-Windows 2000 Compatible Access" security group.  This group may have been populated during the promotion of the domain with intent of allowing permissions to be compatible with pre-Windows 2000 servers and application.  To secure the domain, remove any unnecessary members from this group.

I checked the group in question, and there is one member: Authenticated Users with AD folder in NT Authority.  Is it OK to have there, or do I need to remove it?  What is it?  
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Question by:dbestcomputers
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Pber earned 125 total points
ID: 17167243
This error is normal.  They still warn you even if you didn't select “Permissions compatible with pre-Windows 2003 servers” during the DCpromo phase.  

The permissions are fine and they are what they should be.  The security risk was when the "Pre-Windows 2000 Compatible Access" contained the EVERYONE group.  Keep the Everyone group out of here.

This group is for backward compatibility for NT4 systems allowing for NULL session connections.
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by:dbestcomputers
ID: 17168048
Ok, thank You!
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