Within Exchange, any Distribution Group(s) or E-mail enabled Security Group(s) which contain Lingering Links will impact the OAB (Offline Address Book) generation process causing it to not replicate correctly. While this issue has been around since AD started with Windows 2000, it is a fairly unknown issue and is related to how the OAB (Offline Address Book) Generation process functions.
A couple options exist to fix this issue. You will either need to delete and recreate the impacted group(s), or re-host the Active Directory partition that contains the group(s) with Lingering Links.
Read out the complete blog at http://blogs.technet.com/b/exchange/archive/2011/09/14/how-lingering-links-can-impact-oab-generation-process.aspx
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