On the Platform Server
Overview form, change the External Name of the server as needed. The external
name is the Internet address of the server. For CP servers, the address
listed here is used for the variable $CPIPs in new
reseller and new organization email templates. If you have multiple
CP servers, the external name value of every CP server is displayed by
the $CPIPs variable by default. If you do not want your customers to see
the IP addresses of all of your CP servers, leave the External Name blank.
At least one CP server must have an entry in the External Name field,
however.