PDNS_ALLOW_AXFR_IPS: restrict zonetransfers to originate from these IP addresses. Enter your slave IPs here. (Default: "127.0.0.1", Possible Values: "IPs comma seperated")
PDNS_MASTER: act as master (Default: "yes", Possible Values: "yes, no")
PDNS_SLAVE: act as slave (Default: "no", Possible Values: "yes, no")
PDNS_CACHE_TTL: Seconds to store packets in the PacketCache (Default: "20", Possible Values: "")
PDNS_DISTRIBUTOR_THREADS: Default number of Distributor (backend) threads to start (Default: "3", Possible Values: "")
PDNS_RECURSIVE_CACHE_TTL: Seconds to store packets in the PacketCache (Default: "10", Possible Values: "")
POWERADMIN_HOSTMASTER: default hostmaster (Default: "", Possible Values: "")
POWERADMIN_NS1: default Nameserver 1 (Default: "", Possible Values: "")
POWERADMIN_NS2: default Nameserver 2 (Default: "", Possible Values: "")