Hi,
While using ADSI Edit I made a mistake deleting container CN=Servers from under
CN=Configuration , CN=Services, CN=Microsoft Exchange, CN=[YourExchangeOrganisationName], CN=Administrative Groups, CN=[LegacyAdministrativeGroupName], CN=Servers
also deleted the Exchange server from the AD Computer Objects and joined newly. but i don't have the backup but i am having the system state backup for before deleting the Exchange Server from the ADSEdit.msc