Configure Exchange 2007 for BES 5.0 upgrade

Create an account for Exchange named BESAdmin
Assign owner on ALL public folders
My computer>Manage>local users and groups>groups>double click Administrators and add BESAdmin
On Exchange 2007 server open EMS type in add-exchangeadministrator “BESAdmin” – role ViewOnlyAdmin
On the AD server do the following:
Open Active directory users and computers
view>advanced features>properties>security tab>advanced click add type BESAdmin apply in the allow column send as checkbox.
Verify BESAdmin can access usuer accounts:
C:program filesresearch in motionblackberry enterprise serverutilityiemstest.exe
select the account you want to test click ok
Prepare the existing environment – run tools BB50UpgradePrep.exe to prepare the existing environment
Backup the database – run toolsBlackBerryDbBackup.exe an example of this command for a database named BESMgmt to a folder that is named DB_backup_folder use this command BlackBerryDbBackup.exe -d BESMgmt -f C:DB_backup_folder -U sqlusername -P sqlpassword
BESAdmin needs the following permissions in AD users and computers where the users are located.  
-for the containers, the list contents permission
-for the user objects, the read all properties permission
Find ldap information
Install Windows support tools
start>run>ldp
on the connection menu click connect – connect to the domain controller
in the ldp windows view>tree select the first option
copy the baseDN to a text file