This manual page documents briefly the
command. It was written for the
Debian® distribution because the original program does not have a manual page.
spfquery performs Sender Policy Framework (SPF) authorization
checks based on the command-line arguments or data given in a file or
on standard input. For information on SPF see http://www.openspf.org.
Options are divided into two groups: Data options, which must be
given, though just enough of them to specify a query; and control
options, which are optional and control the local policy, behaviour
and output format of spfquery.
This programs follows the GNU getopt_long_only(3) command line
syntax: Long options can be given with one or two dashes and can be
abbreviated to a prefix long enough to be non-ambiguous. If an option
starting with a single dash doesn't match a long option, it is taken
as a short option with a following parameter, if applicable. An equals
sign between the option name and the parameter is optional for both
short and long options.
--file option conflicts with all the other data options. The
--helo and --rcpt-to are optional.
Read SPF data from filename. Specify "-" to read from standard input.
The file should consist of one line per query, each query line consisting of the IP address, sender adress, and optional HELO string, separated by spaces.
Local parts containing spaces are currently not supported.
Specify the IP address of the remote host that is delivering the mail.
-s, --sender [local-part@]domain
Specify the email address that was used as the envelope sender. If no
username (local part) is given, "postmaster" will be assumed.
Specify that domain-name was provided in the SMTP HELO (or EHLO) command.
Specify the recipients as comma-separated list. Any secondary mail exchangers of all
recipient domains are automatically authorized.
Turn on debugging output.
Test against spf-terms before the final (implicit or explicit)
"all" in an SPF record. This can be used to implement a local policy for whitelisting.
-t, --trusted 
Check the sender domain with trusted-forwarder.org.
This is a non-standard feature.
Do not check the sender domain with trusted-forwarder.org. This is the default.
Test the sender domain against spf-mechanisms if the domain has no SPF record.
Default explanation string to use if the SPF record does not specify an explanation string itself.
Maximum number of DNS lookups to allow.
-c, --sanitize [0|1]
Do [not] sanitize the output by condensing consecutive whitespace
into a single space and replacing non-printable characters with
question marks. Enabled by default.
as the name of the local system instead of
(the name is used in the output).
Print comments found when reading from a file.
Provide override and fallback SPF records for certain domains.
Not implemented yet.spfquery
would act as if the specified records were present before and after any existing record, respectively, of those domains.
Show summary of options.
Show version of program.
The output ordinarily consists of four lines:
the result code;
the explanation, suitable for use in an SMTP response message, empty
except when a rejection (permanent or temporary) makes sense;
the header comment on its own;
the Received-SPF header field as defined in RFC 4408 section 7,
incorporating the header comment.
If errors (including no SPF record found!) occur during processing,
one or more error blocks will be prepended.
These start with "StartError" and end with "EndError".
The result codes and their corresponding exit codes are as follows:
1 - neutral
The sender domain explicitly makes no assertion about the ip-address.
This result must be interpreted exactly as if no SPF record at all existed.
2 - pass
The ip-address is authorized to send mail for the sender domain.
3 - fail
The ip-address is unauthorized to send mail for the sender domain.
4 - softfail
The ip-address is not authorized to send mail for the sender domain, but
the sender domain cannot or does not wish to make a strong assertion that no such mail can
ever come from it.
5 - none
No SPF record was found.
6 - error (temporary)
A transient error occurred (e.g. failure to reach a DNS server), preventing a
result from being reached.
This manual page was written by Magnus Holmgren for the Debian®
system (but may be used by others). Heavily inspired by the spfquery manpage of
libmail-spf-query-perl (spfquery.mail-spf-query-perl(1)) by Julian Mehnle.
Also based on the command-line help of spfquery.