POSTGRES_HOST
POSTGRES_USER
POSTGRES_PASSWORD
POSTGRES_DB

PDNS_RECURSOR_HOST
PDNS_API_KEY
PDNS_WEBSERVER_PASSWORD
PDNS_ALLOW_AXFR_IPS
PDNS_ALLOW_RECURSION
PDNS_ALSO_NOTIFY
PDNS_ALLOW_NOTIFY_FROM
PDNS_ALLOW_DNSUPDATE_FROM

SESSION_KEY

DNS_HOSTMASTER
DNS_NS1
DNS_NS2