Oab errors and new users not showing in the gal

I replaced a DC running Exchange 2003  with a new server running Server 2008 r2 running Exchange 2007.   Everything is working fine, however when they download the OAB they get the error 'Microsoft Exchange' reported error (0x8004010F) : 'The operation failed. An object cannot be found.'   and when new users are added they don't show up in the Gal.  

I installed exchange sp3,  rebuilt the oab, and replaced the gal with a new address list.  
lcsitAsked:
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BusbarSolutions ArchitectCommented:
when you installed the 2007 server did you use PF and created PF store, make sure that it is mounted and that you configure the OAB to use http and PF distribution, also make sure that in the mailbox database you have the specified in the client settings the PF store as a source of OAB
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lcsitAuthor Commented:
Yes i did use PF and the store is mounted.  Oab is configured to use http and PF distribution and the client setting are the source of the oab
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BusbarSolutions ArchitectCommented:
which version of outlook you are using
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lcsitAuthor Commented:
I was looking around and found the Domain controller servers being used by exchange as well as the global catalog server being used is still showing the old server.   What do i have to do to get this to show the new server?
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BusbarSolutions ArchitectCommented:
so is this old GC removed
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lcsitAuthor Commented:
Yes  we demoted the old server and unistalled exchange and are using it as a file server and BES server
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SangramGohilCommented:
Check if DC is functioning perfectly
refer http://technet.microsoft.com/en-us/library/bb218301%28EXCHG.80%29.aspx


Check DC name in Get-ExchangeServer -Status |FL

finally if not working set static domain controller using

Set-ExchangeServer

more data on command  http://technet.microsoft.com/en-us/library/bb123716.aspx

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