/etc/powerdns/recursor.conf is in pdns-recursor 3.5.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 | # Autogenerated configuration file template
#################################
# aaaa-additional-processing turn on to do AAAA additional processing (slow)
#
# aaaa-additional-processing=off
#################################
# allow-from If set, only allow these comma separated netmasks to recurse
#
# allow-from=127.0.0.0/8, 10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12, ::1/128, fe80::/10
#################################
# allow-from-file If set, load allowed netmasks from this file
#
# allow-from-file=
#################################
# auth-can-lower-ttl If we follow RFC 2181 to the letter, an authoritative server can lower the TTL of NS records
#
# auth-can-lower-ttl=off
#################################
# auth-zones Zones for which we have authoritative data, comma separated domain=file pairs
#
# auth-zones=
#################################
# chroot switch to chroot jail
#
# chroot=
#################################
# client-tcp-timeout Timeout in seconds when talking to TCP clients
#
# client-tcp-timeout=2
#################################
# config-dir Location of configuration directory (recursor.conf)
#
# config-dir=/etc/powerdns/
#################################
# daemon Operate as a daemon
#
# daemon=yes
#################################
# delegation-only Which domains we only accept delegations from
#
# delegation-only=
#################################
# disable-edns Disable EDNS
#
# disable-edns=
#################################
# disable-edns-ping Disable EDNSPing
#
# disable-edns-ping=no
#################################
# disable-packetcache Disable packetcache
#
# disable-packetcache=no
#################################
# dont-query If set, do not query these netmasks for DNS data
#
# dont-query=127.0.0.0/8, 10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12, ::1/128, fe80::/10
#################################
# entropy-source If set, read entropy from this file
#
# entropy-source=/dev/urandom
#################################
# etc-hosts-file Path to 'hosts' file
#
# etc-hosts-file=/etc/hosts
#################################
# export-etc-hosts If we should serve up contents from /etc/hosts
#
# export-etc-hosts=off
#################################
# forward-zones Zones for which we forward queries, comma separated domain=ip pairs
#
# forward-zones=
#################################
# forward-zones-file File with (+)domain=ip pairs for forwarding
#
# forward-zones-file=
#################################
# forward-zones-recurse Zones for which we forward queries with recursion bit, comma separated domain=ip pairs
#
# forward-zones-recurse=
#################################
# hint-file If set, load root hints from this file
#
# hint-file=
#################################
# ignore-rd-bit Assume each packet requires recursion, for compatability
#
# ignore-rd-bit=off
#################################
# local-address IP addresses to listen on, separated by spaces or commas. Also accepts ports.
#
local-address=127.0.0.1
#################################
# local-port port to listen on
#
local-port=53
#################################
# log-common-errors If we should log rather common errors
#
# log-common-errors=yes
#################################
# logging-facility Facility to log messages as. 0 corresponds to local0
#
# logging-facility=
#################################
# lua-dns-script Filename containing an optional 'lua' script that will be used to modify dns answers
#
# lua-dns-script=
#################################
# max-cache-entries If set, maximum number of entries in the main cache
#
# max-cache-entries=1000000
#################################
# max-cache-ttl maximum number of seconds to keep a cached entry in memory
#
# max-cache-ttl=86400
#################################
# max-mthreads Maximum number of simultaneous Mtasker threads
#
# max-mthreads=2048
#################################
# max-negative-ttl maximum number of seconds to keep a negative cached entry in memory
#
# max-negative-ttl=3600
#################################
# max-packetcache-entries maximum number of entries to keep in the packetcache
#
# max-packetcache-entries=500000
#################################
# max-tcp-clients Maximum number of simultaneous TCP clients
#
# max-tcp-clients=128
#################################
# max-tcp-per-client If set, maximum number of TCP sessions per client (IP address)
#
# max-tcp-per-client=0
#################################
# network-timeout Wait this nummer of milliseconds for network i/o
#
# network-timeout=1500
#################################
# no-shuffle Don't change
#
# no-shuffle=off
#################################
# packetcache-servfail-ttl maximum number of seconds to keep a cached servfail entry in packetcache
#
# packetcache-servfail-ttl=60
#################################
# packetcache-ttl maximum number of seconds to keep a cached entry in packetcache
#
# packetcache-ttl=3600
#################################
# pdns-distributes-queries If PowerDNS itself should distribute queries over threads (EXPERIMENTAL)
#
# pdns-distributes-queries=no
#################################
# processes Launch this number of processes (EXPERIMENTAL, DO NOT CHANGE)
#
# processes=1
#################################
# query-local-address Source IP address for sending queries
#
# query-local-address=0.0.0.0
#################################
# query-local-address6 Source IPv6 address for sending queries
#
# query-local-address6=
#################################
# quiet Suppress logging of questions and answers
#
quiet=yes
#################################
# remotes-ringbuffer-entries maximum number of packets to store statistics for
#
# remotes-ringbuffer-entries=0
#################################
# serve-rfc1918 If we should be authoritative for RFC 1918 private IP space
#
# serve-rfc1918=
#################################
# server-id Returned when queried for 'server.id' TXT or NSID, defaults to hostname
#
# server-id=
#################################
# setgid If set, change group id to this gid for more security
#
setgid=pdns
#################################
# setuid If set, change user id to this uid for more security
#
setuid=pdns
#################################
# single-socket If set, only use a single socket for outgoing queries
#
# single-socket=off
#################################
# soa-minimum-ttl Don't change
#
# soa-minimum-ttl=0
#################################
# soa-serial-offset Don't change
#
# soa-serial-offset=0
#################################
# socket-dir Where the controlsocket will live
#
# socket-dir=/var/run/
#################################
# socket-group Group of socket
#
# socket-group=
#################################
# socket-mode Permissions for socket
#
# socket-mode=
#################################
# socket-owner Owner of socket
#
# socket-owner=
#################################
# spoof-nearmiss-max If non-zero, assume spoofing after this many near misses
#
# spoof-nearmiss-max=20
#################################
# stack-size stack size per mthread
#
# stack-size=200000
#################################
# threads Launch this number of threads
#
# threads=2
#################################
# trace if we should output heaps of logging
#
# trace=off
#################################
# version-string string reported on version.pdns or version.bind
#
# version-string=PowerDNS Recursor 3.3 $Id: pdns_recursor.cc 1712 2010-09-11 13:40:03Z ahu $
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