In Configuration → DNS, keep the default settings (the DNS forwarder service and simple DNS translation with the hosts
file and a table of leased addresses are allowed) and set the advanced options:
Enter the local DNS domain name — filial.company.com
.
Enable the Use custom forwarding option The settings are addressed in details in chapter 4.2 Configuration of a filial office.
It is recommended to add a record about the server (or about other hosts to which a fixed IP address will be assigned) to the hosts file:
10.1.1.1 server