This is to announce support for assigning internal domains by Umbrella site.
To assign internal domains to specific Umbrella sites only, navigate to the Domain Management page of the Umbrella dashboard. When creating or editing an internal domain entry, you will now be able to assign it to specific Umbrella sites.
When an internal domain is assigned to a specific Umbrella site, Virtual Appliances in that site will forward DNS requests for that internal domain to the local DNS server(s). Virtual Appliances in other sites will forward DNS requests for that internal domain to Umbrella for resolution.