The RPC (Remote Procedure Call) service is the mechanism used by the End User Web Interface (EUWI) to communicate with the PureMessage Manager. Access to the HTTPD (RPC/UI) service is, by default, set to use the Host Access List as the source of the IP addresses or hostnames of authorized machines. This list should contain the IP addresses or hostnames of all of your PureMessage servers. You can use the Local Services: Configure RPC Service page to choose which list is used to determine access control.
To set the RPC service's host access list: