DDNS Adapter The DDNS adapter uses the dynamic DNS protocol to send updated DNS records to your DNS system as nodes are provisioned into Horizon. To configure this adapter, create a .properties file in the ${OPENNMS_HOME}/etc/opennms.properties.d/ folder and set the importer.adapter.dns.server property: importer.adapter.dns.server=192.168.1.1 (1) 1 Replace with the IP address of your DNS server to receive dynamic DNS updates. Adapters Detectors