I have a client (call them Acme Foundation) who is using the customer portal. They would like to set up a friendly URL -- portal.acme.org -- for the portal login. I have some questions below:
I presume they would need to go to their DNS registrar and set up subdomain for portal.acme.org?
What should this subdomain point to in Salesforce? Their Salesforce My Domain is acme.my.salesforce.com. Do I need to set up a Domain named "portal.acme.org" and use a Custom URL to tie it a Site? Does the DNS subdomain point to the salesforce Domain or to the Salesforce Site URL?