/mcpDo the following tasks to set up system distribution list access lists: 1. Configure the advanced settings that enable and control the access lists by performing the steps in the Enable and Configure System Distribution List Access List, on page 59 section. If you are using digital networking to connect multiple Unity Connection servers, you need to enable and configure distribution list access list on all of the servers. In a digital network, the values for the advanced settings that enable and control access lists must be configured identically on each location in the network in order for access lists to function properly. 2. For each system distribution list that you want to control with an access list, create a new system distribution list. With an alias consisting the alias of original list plus a suffix defined in the System Distribution List Alias Suffix for Access Lists field. For more information, see the Configuring System Distribution Lists, on page 56 section. Enable and Configure System Distribution List Access List Step 1 In Cisco Unity Connection Administration, expand System Settings > Advanced and select Messaging. Step 2 Check the Use Access Lists to Control Who Can Send to System Distribution Lists check box. Step 3 Check the Allow Delivery of Messages to System Distribution Lists That Have No Access List check box. Uncheck this check box to reject all messages sent to system distribution lists that do not have an access list, and send a Non-Delivery Receipt (NDR) to the message sender. Note Step 4 Specify the suffix that is used to distinguish access lists in the System Distribution List Alias Suffix for Access Lists field and select Save. Enabling Users to Send Messages to a System Distribution List The users must be configured to send messages to a distribution list. The default settings in class of service allow the user to send messages to distribution lists. Step 1 In Cisco Unity Connection Administration, expand Class of Service and select Class of Service. The Search Class of Service page appears displaying the currently configured classes of services. Step 2 On the Search Class of Service page, select the class of service applied to the voicemail users. Step 3 On the Edit Class of Service page, in the Message Options section, check the Allow Users to Send Messages to System Distribution Lists check box and select Save. System Administration Guide 59 System Distribution List Enable and Configure System Distribution List Access List