Exchange Schema Version
After you have updated the schema with the Exchange 2010 changes (RTM or service packs), you can check the current version with adsiedit.msc. First connect to the Schema: Expand the nodes and drill down to the name CN=ms-Exch-Schema-Version-Pt. Right click on CN=ms-Exch-Schema-Version-Pt and select Properties. Now find the attribute rangeUpper
