Active Directory User object missing attributes

Some users in my ADDS domain are missing the target address attribute. The majority of users have this attribute. Newly created account also have this attribute.

This has been verified using ADSI. I've also used the Schema MMC to verify that the user object has the target address attribute.

How can i add the target address attribute (or any existing attribute) to users that are missing it?

Windows 2008 and 2008 R2   DCs
Functional Level :  Windows Server 2003
Upgraded from NT>200>2003>2008>2008r2

Any help will be appreciated.
Who is Participating?
MHMAdminsConnect With a Mentor Commented:
You may have to upgrade you domain functional level to 2008 R2 level.
Seth SimmonsSr. Systems AdministratorCommented:
is the attribute missing, or is it there with a null value?
targetAddress is used by exchange
do these users in question have mailboxes?
antmax00Author Commented:
The attribute itself is missing from specific users.
Yes users in question do have mailboxes on Exchange 2003.
The object 'User' in schema has the target address attribute.

I will look into upgrading the function level; however, i doubt that that will adjust the schema attributes associated with an object.

Any other thoughts?
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It added them when we upgraded our functional level and then in AD view advnced features
antmax00Author Commented:
MHMAdmins let me give that a try off hours. I will let you know the outcome.
antmax00Author Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for antmax00's comment #a39631313

for the following reason:

MHMAdmins it worked!  

After upgrading the Functional Level to 2008 all missing attributes populated the user object.

I'm glad the fix worked but please don't forget to assign points for correct answers.
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