1SPFQUERY(1) User Contributed Perl Documentation SPFQUERY(1)
2
6 spfquery - (Mail::SPF) - Checks if a given set of e-mail parameters
7 matches a domain's SPF policy
8
10 2.501
11
13 Preferred usage:
14 spfquery [--versions|-v 1|2|1,2] [--scope|-s helo|mfrom|pra]
15 --identity|--id identity --ip-address|--ip ip-address
16 [--helo-identity|--helo-id helo-identity] [OPTIONS]
17 spfquery [--versions|-v 1|2|1,2] [--scope|-s helo|mfrom|pra]
19 --file|-f filename|- [OPTIONS]
20 Legacy usage:
22 spfquery --helo helo-identity --ip-address|--ip ip-address
23 [OPTIONS]
24 spfquery --mfrom mfrom-identity --ip-address|--ip ip-address
26 [--helo helo-identity] [OPTIONS]
27 spfquery --pra pra-identity --ip-address|--ip ip-address [OPTIONS]
29 Other usage:
31 spfquery --version|-V
32 spfquery --help
34
36 spfquery checks if a given set of e-mail parameters (e.g., the SMTP
37 sender's IP address) matches the responsible domain's Sender Policy
38 Framework (SPF) policy. For more information on SPF see
39 <http://www.openspf.org>.
40 Preferred Usage
42 The following usage forms are preferred over the legacy forms used by
43 older spfquery versions:
44 The --identity form checks if the given ip-address is an authorized
46 SMTP sender for the given "helo" hostname, "mfrom" envelope sender
47 e-mail address, or "pra" (so-called purported resonsible address)
48 e-mail address, depending on the value of the --scope option (which
49 defaults to mfrom if omitted).
50 The --file form reads "ip-address identity [helo-identity]" tuples from
52 the file with the specified filename, or from standard input if
53 filename is -, and checks them against the specified scope (mfrom by
54 default).
55 Both forms support an optional --versions option, which specifies a
57 comma-separated list of the SPF version numbers of SPF records that may
58 be used. 1 means that "v=spf1" records should be used. 2 means that
59 "spf2.0" records should be used. Defaults to 1,2, i.e., uses any SPF
60 records that are available. Records of a higher version are preferred.
61 Legacy Usage
63 spfquery versions before 2.500 featured the following usage forms,
64 which are discouraged but still supported for backwards compatibility:
65 The --helo form checks if the given ip-address is an authorized SMTP
67 sender for the "HELO" hostname given as the identity (so-called "HELO"
68 check).
69 The --mfrom form checks if the given ip-address is an authorized SMTP
71 sender for the envelope sender email-address (or domain) given as the
72 identity (so-called "MAIL FROM" check). If a domain is given instead
73 of an e-mail address, "postmaster" will be substituted for the
74 localpart.
75 The --pra form checks if the given ip-address is an authorized SMTP
77 sender for the PRA (Purported Responsible Address) e-mail address given
78 as the identity.
79 Other Usage
81 The --version form prints version information of spfquery. The --help
82 form prints usage information for spfquery.
83
85 Standard Options
86 The preferred and legacy forms optionally take any of the following
87 OPTIONS:
88 --default-explanation string
90 --def-exp string
91 Use the specified string as the default explanation if the
92 authority domain does not specify an explanation string of its own.
93 --hostname hostname
95 Use hostname as the host name of the local system instead of auto-
96 detecting it.
97 --keep-comments
99 --no-keep-comments
100 Do (not) print any comments found when reading from a file or from
101 standard input.
102 --sanitize (currently ignored)
104 --no-sanitize (currently ignored)
105 Do (not) sanitize the output by condensing consecutive white-space
106 into a single space and replacing non-printable characters with
107 question marks. Enabled by default.
108 --debug (currently ignored)
110 Print out debug information.
111 Black Magic Options
113 Several options that were supported by earlier versions of spfquery are
114 considered black magic (i.e. potentially dangerous for the innocent
115 user) and are thus disabled by default. If the Mail::SPF::BlackMagic
116 Perl module is installed, they may be enabled by specifying
117 --enable-black-magic.
118 --max-dns-interactive-terms n
120 Evaluate a maximum of n DNS-interactive mechanisms and modifiers
121 per SPF check. Defaults to 10. Do not override the default unless
122 you know what you are doing!
123 --max-name-lookups-per-term n
125 Perform a maximum of n DNS name look-ups per mechanism or modifier.
126 Defaults to 10. Do not override the default unless you know what
127 you are doing!
128 --authorize-mxes-for email-address|domain,...
130 Consider all the MXes of the comma-separated list of email-
131 addresses and domains as inherently authorized.
132 --tfwl
134 Perform "trusted-forwarder.org" accreditation checking.
135 --guess spf-terms
137 Use spf-terms as a default record if no SPF record is found.
138 --local spf-terms
140 Process spf-terms as local policy before resorting to a default
141 result (the implicit or explicit "all" mechanism at the end of the
142 domain's SPF record). For example, this could be used for white-
143 listing one's secondary MXes: "mx:mydomain.example.org".
144 --override domain=spf-record
146 --fallback domain=spf-record
147 Set overrides and fallbacks. Each option can be specified multiple
148 times. For example:
149 --override example.org='v=spf1 -all'
151 --override '*.example.net'='v=spf1 a mx -all'
152 --fallback example.com='v=spf1 -all'
153
155 pass The specified IP address is an authorized SMTP sender for
156 the identity.
157 fail The specified IP address is not an authorized SMTP sender
159 for the identity.
160 softfail The specified IP address is not an authorized SMTP sender
162 for the identity, however the authority domain is still
163 testing out its SPF policy.
164 neutral The identity's authority domain makes no assertion about
166 the status of the IP address.
167 permerror A permanent error occurred while evaluating the authority
169 domain's policy (e.g., a syntax error in the SPF record).
170 Manual intervention is required from the authority domain.
171 temperror A temporary error occurred while evaluating the authority
173 domain's policy (e.g., a DNS error). Try again later.
174 none There is no applicable SPF policy for the identity domain.
176
178 Result | Exit code
179 -----------+-----------
180 pass | 0
181 fail | 1
182 softfail | 2
183 neutral | 3
184 permerror | 4
185 temperror | 5
186 none | 6
187
189 spfquery --scope mfrom --id user@example.com --ip 1.2.3.4
190 spfquery --file test_data
191 echo "127.0.0.1 user@example.com helohost.example.com" | spfquery -f -
192
194 spfquery has undergone the following interface changes compared to
195 earlier versions:
196 2.500
198 • A new preferred usage style for performing individual SPF
199 checks has been introduced. The new style accepts a unified
200 --identity option and an optional --scope option that specifies
201 the type (scope) of the identity. In contrast, the legacy
202 usage style requires a separate usage form for every supported
203 scope. See "Preferred usage" and "Legacy usage" for details.
204 • The former "unknown" and "error" result codes have been renamed
206 to "permerror" and "temperror", respectively, in order to
207 comply with RFC 4408 terminology.
208 • SPF checks with an empty identity are no longer supported. In
210 the case of an empty "MAIL FROM" SMTP transaction parameter,
211 perform a check with the "helo" scope directly.
212 • The --debug and --(no-)sanitize options are currently ignored
214 by this version of spfquery. They will again be supported in
215 the future.
216 • Several features that were supported by earlier versions of
218 spfquery are considered black magic and thus are now disabled
219 by default. See "Black Magic Options".
220 • Several option names have been deprecated. This is a list of
222 them and their preferred synonyms:
223 Deprecated options | Preferred options
225 ---------------------+-----------------------------
226 --sender, -s | --mfrom
227 --ipv4, -i | --ip-address, --ip
228 --name | --hostname
229 --max-lookup-count, | --max-dns-interactive-terms
230 --max-lookup |
231 --rcpt-to, -r | --authorize-mxes-for
232 --trusted | --tfwl
233
235 Mail::SPF, spfd(8)
236 <http://tools.ietf.org/html/rfc4408>
238
240 This version of spfquery is a complete rewrite by Julian Mehnle
241 <julian@mehnle.net>, based on an earlier version written by Meng Weng
242 Wong <mengwong+spf@pobox.com> and Wayne Schlitt <wayne@schlitt.net>.
243perl v5.32.1 2021-01-27 SPFQUERY(1)