In the DNS Forwarder configuration, enable simple DNS resolution. Use the When resolving name... entry to specify the local DNS domain, i.e. filial.company.com.

Figure 3.2. Filial office — DNS Forwarder configuration

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 .

Figure 3.3. Filial — adding a record about the server to the 'hosts' file