Create a domino user called BesAdmin
Log into the Domino Administrator:

Register a new user account for the BesAdmin user:

Add the BesAdmin user to the LocalDomainServers Group
Browse to the Groups view in the Domino Administrator:

Double click the LocalDomainServers group:

Drop down the Members menu:
Select the domain directory and add the BesAdmin user to the group:

Click OK.
Save the changes to the group.
Stop the Domino Server
On the Domino server, browse to Start → Programs → Administrative Tools → Services. Locate the Lotus Domino Server service. Double click the entry to display the properties for the service.
Set the Startup Type to Manual:

Reboot the Domino server.
Create a local administrator account on the Domino server
Right click on the icon for My Computer and select Manage.
The Computer Management console will be displayed. Browse to Local Users and Groups → Users.
Create a new user account with a name of BesAdmin.
Set the password to never expire.
Browse to Local Users and Groups → Groups:

Open the Administrators Group and add the BesAdmin user account to the group.
Log off and then log back in as the new BesAdmin user on the Domino server.
You are now ready to install the BES software.
Add Users to the BES
Launch the Blackberry Manager from Start → Programs → Blackberry Enterprise Server → Blackberry Manager:

Browse to the Server entry from the left-hand navigation pane and select the Users tab:

Select the option to Add User. The Domino directory will be displayed:

Select the target user account and click Add then OK. The user will now be listed in the Blackberry Manager:

Set Activation Password
Right click on the entry for the user and select the option to Set Activation Password:

Enter a suitable password, ideally this should be 6 characters long and contain lower-case letters only:

Click OK.
The user is now ready to perform an Enterprise Activation on the handheld.
Perform Enterprise Activation
On the Blackberry handheld, from the main menu select Options → Advanced Options → Enterprise Activation.
In the Email field, the user should enter their full email address.
In the Password field, the user should enter the activation password set by the administrator (NOTE – this is NOT the user’s NT domain or Domino password, but the BES Activation Password that was set earlier).
If the user sees the option to enter an Activation Server Address, this field is only required if the handheld is being activated over WiFi via the local network. If the handheld is being activated via a cellular connection (GPRS or 3G) then leave this option blank.
Press the menu button and select the option to Activate.
After a few moments the handheld will display ‘Encryption Verified’ and then ‘Waiting for services’. This means that the connection to the BES was successful and mailbox data is now being downloaded to the device. This process can take up to 20 minutes to complete depending on the amount of data held in the user’s mailbox.
On the Domino Server itself, in the Domino Server Console, the activation process can be viewed in real time:

The activation process is now complete.
Repeat the above process for additional users as required.