Hosted BlackBerry® services permit you to make the BlackBerry® Enterprise Server available to other organizations (for example, small or medium-sized businesses). When you use the Hosted BlackBerry services in your organization's environment, one or more organizations can subscribe to your organization's BlackBerry Enterprise Server.

If your organization hosts a BlackBerry Enterprise Server and multiple organizations subscribe to the Hosted BlackBerry services, you must customize the contact lookup feature so that users can access their organization’s contact list and download the information to their BlackBerry devices. When you customize how users search for email addresses, you restrict the users from accessing the contact information of another organization that also subscribes to the Hosted BlackBerry service.

You must make sure that the organization name for each user is listed accurately and consistently in the contact list. For example, if the organization name appears as an acronym in some entries but in full in others, the address search results might be inaccurate. If a user tries to look up contact information for a user whose organization name is not specified, no search results appear.

When users try to look up contact information, they must type the entire email address.

To configure Hosted BlackBerry services, you must use a different licensing model for the BlackBerry Enterprise Server.

If you do not want to use the contact lookup feature, you can configure the BlackBerry Enterprise Server to look up email addresses using LDAP. With LDAP, users can perform more comprehensive searches for email addresses in the contact list. The BlackBerry Enterprise Server does not search for a user’s organization name in the contact list. Instead, it uses an LDAP field as a filter for retrieving email addresses with a specific organization name. You can select an existing LDAP field or you can create a custom LDAP field.

For more information about Hosted BlackBerry services, see the BlackBerry Enterprise Server Planning Guide.