[Setting] PermittedHosts [Description] 
Limits report distribution by explicitly specifying which hosts can receive e-mail delivery. Within PermittedHosts, each host is specified as a HostName element, where the value is either an IP address or a DNS name. Only e-mail accounts defined for the host are valid recipients. If you specified DefaultHostName, be sure to include that host as HostName element of PermittedHosts. This value must be one or more DNS names or IP addresses. By default, this value is not set. If the value is not set, there are no restrictions on who can receive e-mailed reports.