1).Run ADSIEDIT.exe in Domain machine,the user should be have the administrator access,
2).expand Configuration, expand Services, expand Microsoft Exchange.
3).Right-click Microsoft Exchange and select Properties.
4).Type otherWellknownObjects in the Edit.just clicked the add button (essentially adding nothing) and clicking ok.
5).Re-installed the Exchange 2007 SP1.
4.网页资料四,微软网站的White Paper: Preparing Active Directory for Exchange 2007.也是用来理解问题三的解决办法.