Resolution
List of netmasks that are allowed to perform recursive queries could be set with allow-recursion option in PowerDNS configuration file /etc/powerdns/pdns.conf inside HSPcomplete VE as comma-separated list.
Please do not forget to leave in the list at least IP-addresses of HSPcomplete VE (HSPC_IP_ADDRESS in the example below) and local IP-address (127.0.0.1):
allow-recursion=HSPC_IP_ADDRESS,127.0.0.1To apply configuration changes it is required to restart PowerDNS service:
# /etc/init.d/pdns restartKeywords: powerdns, recursive queries, recursion