/mcpthat is not part of the search scope of a particular group of users, the users are not able to find the distribution list to address messages to it. For example, you can create a new partition called “Distribution Lists Partition” and configure the allvoicemailusers, allvoicemailenabledcontacts, and undeliverablemessages to use this partition. To grant certain users access to send to the lists, you can create a new search space that includes both the default partition and the “Distribution Lists Partition,” and assign this search space as the search scope for the users. • System Call Handlers: Unity Connection uses the call handler search scope to match extensions that are dialed from the call handler to users, administrator defined contacts, and remote contacts at VPIM locations. You can set the scope of the handler to either inherit the search scope that is already set on the call (from a previous handler or from a call routing rule) or to use the particular search scope that you specify. • Directory Handlers: Unity Connection uses the directory handler search scope to define the objects that callers who reach the directory handler can find or hear. For phone directory handlers, you can set the scope to the entire server, a particular class of service, a system distribution list, or a search space (either inherited from the call or specified for the directory handler). For voice enabled directory handlers, you can set the scope to the entire server or to a search space (either inherited from the call or specified for the directory handler). When callers search a directory handler for a particular name, if the scope of the directory handler is set to a search space, Unity Connection searches each partition in the search space and returns a list of all of the objects that match the name. • Interview Handlers: Each interview handler is associated with a partition, so that it can be included in a search space and callers can reach it from other parts of the conversation. Because interview handlers do not involve dialing or addressing to users or other objects, they do not have a search scope defined. • Networking: When you network a Unity Connection server with other Unity Connection locations, the partitions and search spaces that are configured on the server replicate to all other Unity Connection locations on the network. A Unity Connection network supports up to 10K partitions and 10K search spaces shared among all of the locations in the network. • VPIM Locations: Each VPIM location belongs to a single partition. If a VPIM location allows blind addressing and the partition to which the location belongs is in the search space for a user, the user can blind address to a user on the remote VPIM system. To blind address, the user addresses the message to the Dial ID of the VPIM location followed by the remote user mailbox number. For example, to reach mailbox 1000 at VPIM location 555, the user would address the message to 5551000. The partition of the VPIM location is used as the partition of automatically-created VPIM contacts if the VPIM location is configured for automatic contact creation. You can also change the partition of VPIM contacts independent of the associated VPIM location. Each VPIM location also has a search scope. When Unity Connection receives a message from a sender at a VPIM location, Unity Connection searches the search space that is defined as the search scope for the location to determine the message recipient by matching the extension in the To: address field with a Unity Connection user. • Administrator Defined Contacts: Each administrator defined contact belongs to a partition. When a contact is configured with phone numbers that callers can use to call the contact using voice commands, voice-recognition users with search space includes the partition of the contact are able to call the contact; users with search space does not include this partition are not able to call the contact. In addition, the contact is reachable by callers who reach any voice-enabled directory handler with search scope uses or inherits a search space that includes this partition (or if the directory handler search scope is set to the entire server). System Administration Guide 95 Call Management How Search Spaces Work