1NAMED-CHECKZONE(1)                  BIND 9                  NAMED-CHECKZONE(1)
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NAME

6       named-checkzone - zone file validity checking or converting tool
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SYNOPSIS

9       named-checkzone  [-d]  [-h]  [-j]  [-q] [-v] [-c class] [-f format] [-F
10       format] [-J filename] [-i mode] [-k mode] [-m mode] [-M mode] [-n mode]
11       [-l  ttl]  [-L serial] [-o filename] [-r mode] [-s style] [-S mode] [-t
12       directory] [-T mode] [-w directory] [-D] [-W  mode]  {zonename}  {file‐
13       name}
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DESCRIPTION

16       named-checkzone checks the syntax and integrity of a zone file. It per‐
17       forms the same checks as named does when loading  a  zone.  This  makes
18       named-checkzone  useful for checking zone files before configuring them
19       into a name server.
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OPTIONS

22       -d     This option enables debugging.
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24       -h     This option prints the usage summary and exits.
25
26       -q     This option sets quiet mode, which only sets an exit code to in‐
27              dicate successful or failed completion.
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29       -v     This  option  prints  the version of the named-checkzone program
30              and exits.
31
32       -j     When loading a zone file, this option tells named  to  read  the
33              journal if it exists. The journal file name is assumed to be the
34              zone file name with the string .jnl appended.
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36       -J filename
37              When loading the zone file, this option tells named to read  the
38              journal from the given file, if it exists. This implies -j.
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40       -c class
41              This  option  specifies the class of the zone. If not specified,
42              IN is assumed.
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44       -i mode
45              This option performs post-load zone integrity  checks.  Possible
46              modes  are  full  (the default), full-sibling, local, local-sib‐
47              ling, and none.
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49              Mode full checks that MX records refer  to  A  or  AAAA  records
50              (both in-zone and out-of-zone hostnames). Mode local only checks
51              MX records which refer to in-zone hostnames.
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53              Mode full checks that SRV records refer to  A  or  AAAA  records
54              (both in-zone and out-of-zone hostnames). Mode local only checks
55              SRV records which refer to in-zone hostnames.
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57              Mode full checks that delegation NS records refer to A  or  AAAA
58              records (both in-zone and out-of-zone hostnames). It also checks
59              that glue address records in the zone match those advertised  by
60              the  child.   Mode  local  only checks NS records which refer to
61              in-zone hostnames or verifies that some  required  glue  exists,
62              i.e., when the name server is in a child zone.
63
64              Modes   full-sibling  and  local-sibling  disable  sibling  glue
65              checks, but are otherwise the same as full  and  local,  respec‐
66              tively.
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68              Mode none disables the checks.
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70       -f format
71              This option specifies the format of the zone file. Possible for‐
72              mats are text (the default), and raw.
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74       -F format
75              This option specifies the format of the output  file  specified.
76              For  named-checkzone,  this  does  not have any effect unless it
77              dumps the zone contents.
78
79              Possible formats are text (the default), which is  the  standard
80              textual  representation  of  the  zone, and raw and raw=N, which
81              store the zone in a binary format for rapid  loading  by  named.
82              raw=N specifies the format version of the raw zone file: if N is
83              0, the raw file can be read by any version of named; if N is  1,
84              the  file  can  only be read by release 9.9.0 or higher. The de‐
85              fault is 1.
86
87       -k mode
88              This option performs check-names checks with the specified fail‐
89              ure  mode.  Possible modes are fail, warn (the default), and ig‐
90              nore.
91
92       -l ttl This option sets a maximum permissible TTL for the  input  file.
93              Any  record with a TTL higher than this value causes the zone to
94              be rejected. This is similar to using the max-zone-ttl option in
95              named.conf.
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97       -L serial
98              When  compiling  a  zone  to  raw  format,  this option sets the
99              "source serial" value in the header to the specified serial num‐
100              ber. This is expected to be used primarily for testing purposes.
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102       -m mode
103              This  option  specifies  whether MX records should be checked to
104              see if they are addresses. Possible modes are  fail,  warn  (the
105              default), and ignore.
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107       -M mode
108              This option checks whether a MX record refers to a CNAME. Possi‐
109              ble modes are fail, warn (the default), and ignore.
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111       -n mode
112              This option specifies whether NS records should  be  checked  to
113              see  if  they  are addresses. Possible modes are fail, warn (the
114              default), and ignore.
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116       -o filename
117              This option writes the zone output to filename. If  filename  is
118              -, then the zone output is written to standard output.
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120       -r mode
121              This  option checks for records that are treated as different by
122              DNSSEC but are semantically equal in plain DNS.  Possible  modes
123              are fail, warn (the default), and ignore.
124
125       -s style
126              This  option specifies the style of the dumped zone file. Possi‐
127              ble styles are full (the default) and relative. The full  format
128              is  most  suitable  for  processing  automatically by a separate
129              script.  The relative format is more human-readable and is  thus
130              suitable  for editing by hand. This does not have any effect un‐
131              less it dumps the zone contents. It also does not have any mean‐
132              ing if the output format is not text.
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134       -S mode
135              This option checks whether an SRV record refers to a CNAME. Pos‐
136              sible modes are fail, warn (the default), and ignore.
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138       -t directory
139              This option tells named to chroot to directory, so that  include
140              directives  in the configuration file are processed as if run by
141              a similarly chrooted named.
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143       -T mode
144              This option checks whether Sender Policy Framework (SPF) records
145              exist and issues a warning if an SPF-formatted TXT record is not
146              also present. Possible modes are warn (the default) and ignore.
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148       -w directory
149              This option instructs named to chdir to directory, so that rela‐
150              tive  filenames in master file $INCLUDE directives work. This is
151              similar to the directory clause in named.conf.
152
153       -D     This option dumps the zone file in canonical format.
154
155       -W mode
156              This option specifies whether to check  for  non-terminal  wild‐
157              cards.  Non-terminal wildcards are almost always the result of a
158              failure to  understand  the  wildcard  matching  algorithm  (RFC
159              4592). Possible modes are warn (the default) and ignore.
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161       zonename
162              This indicates the domain name of the zone being checked.
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164       filename
165              This is the name of the zone file.
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RETURN VALUES

168       named-checkzone returns an exit status of 1 if errors were detected and
169       0 otherwise.
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SEE ALSO

172       named(8), named-checkconf(8), named-compilezone(8), RFC  1035,  BIND  9
173       Administrator Reference Manual.
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AUTHOR

176       Internet Systems Consortium
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179       2023, Internet Systems Consortium
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1849.18.11                                                     NAMED-CHECKZONE(1)
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