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.\"     Title: SPFQUERY

.\"    Author: Magnus Holmgren <magnus@kibibyte.se>

.\"      Date: 2007-09-06

.\"    Manual: libspf2 manuals for Debian

.\"    Source: libspf2 1.2.5

.\"

.TH "SPFQUERY" "1" "2007-09-06" "libspf2 1.2.5" "libspf2 manuals for Debian"

.\" disable hyphenation

.nh

.SH NAME

spfquery, spfquery.libspf2 \- checks if an IP address is an SPF-authorized SMTP sender for a domain.

.SH SYNOPSIS

.ad l

.HP 9

.B spfquery

.RB { \-i | \-\-ip }

.I ip\-address

.RB { -s | \-\-sender }

.RI [ local-part \fB@\fP] domain

.RB [{ \-h | \-\-helo }

.IR domain-name ]

.RB [ \-\-rcpt\-to

.IR email-address(es) ]

.RI [ CONTROL-OPTIONS ]

.HP 9

.B spfquery

.RB { \-f | \-\-file }

.IR datafile " [" CONTROL-OPTIONS ]

.HP 9

.B spfquery

.RB { \-\-help | \-v | \-\-version }

.ad b

.SH DESCRIPTION

This manual page documents briefly the

\fBspfquery\fR

command. It was written for the

Debian\*[R] distribution because the original program does not have a manual page.

.PP

\fBspfquery\fR 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.

.

.SH OPTIONS

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.

.PP

This programs follows the GNU \fBgetopt_long_only\fR(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.

.SS Data options

The

\fB\-\-file\fR option conflicts with all the other data options. The

\fB\-\-helo\fR and \fB\-\-rcpt\-to\fR are optional.

.TP

\fB\-f\fR, \fB\-\-file\fR \fIfilename\fR

Read SPF data from \fIfilename\fR. Specify \(lq-\(rq to read from standard input.

.sp

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.

.sp

\fBNote\fP

Local parts containing spaces are currently not supported.

.TP

\fB\-i\fP, \fB\-\-ip\fP \fIip-address\fP

Specify the IP address of the remote host that is delivering the mail.

.TP

\fB\-s\fP, \fB\-\-sender\fP [\fIlocal-part\fP\fB@\fP]\fIdomain\fP

Specify the email address that was used as the envelope sender. If no

username (local part) is given, \(lqpostmaster\(rq will be assumed.

.TP

\fB\-h\fP, \fB\-\-helo\fP \fIdomain-name\fP

Specify that \fIdomain-name\fP was provided in the SMTP HELO (or EHLO) command.

.TP

\fB\-r\fP, \fB\-\-rcpt-to\fP \fIrcpt-address\fP[,\fIrcpt-address\fP,...]

Specify the recipients as comma-separated list. Any secondary mail exchangers of all

recipient domains are automatically authorized.

.

.SS Control options

.TP

\fB\-d\fP, \fB\-\-debug\fP[\fB=\fP\fIlevel\fP]

Turn on debugging output.

.TP

\fB\-l\fP, \fB\-\-local\fP \fIspf\-terms\fP

Test against \fIspf\-terms\fR before the final (implicit or explicit)

\(lqall\(rq in an SPF record. This can be used to implement a local policy for whitelisting.

.TP

\fB\-t, \fB\-\-trusted\fR [\fB1\fR]

Check the sender domain with trusted\-forwarder.org.

\fBThis is a non\-standard feature.\fR

.TP

\fB\-t\fP \fB0\fP, \fB\-\-trusted\fR \fB0\fP

Do not check the sender domain with trusted\-forwarder.org. This is the default.

.TP

\fB\-g\fP, \fB\-\-guess\fP \fIspf-mechanisms\fP

Test the sender domain against \fIspf\-mechanisms\fP if the domain has no SPF record.

.TP

\fB\-e\fP, \fB\-\-default\-explanation\fP \fIstring\fP

Default explanation string to use if the SPF record does not specify an expla\%nation string itself.

.TP

\fB\-m\fP, \fB\-\-max\-lookup\fP \fInumber\fP

Maximum number of DNS lookups to allow.

.TP

\fB\-c\fP, \fB\-\-sanitize\fP [\fB0\fP|\fB1\fP]

Do [not] sanitize the output by condensing conse\%cutive white\%space

into a single space and replacing non-printable characters with

question marks. Enabled by default.

.TP

\fB\-n\fP, \fB\-\-name\fP \fIhostname\fP

Use

\fIhostname\fP

as the name of the local system instead of

\(lqspfquery\(rq

(the name is used in the output).

.TP

\fB\-k\fP, \fB\-\-keep\-comments\fP

Print comments found when reading from a file.

.TP

\fB\-a\fP, \fB\-\-override\fP \fI...\fP

.TP

\fB\-z\fP, \fB\-\-fallback\fP \fI...\fP

Provide override and fallback SPF records for certain domains.

\fBNot implemented yet.\fP

\fBspfquery\fP

would act as if the speci\%fied records were present before and after any existing record, respectively, of those domains.

.TP

\fB\-\-help\fP

Show summary of options.

.TP

\fB\-v\fP, \fB\-\-version\fP

Show version of program.

.SH DIAGNOSTICS

The output ordinarily consists of four lines:

.IP 1. 4

the \fIresult code\fP;

.IP 2. 4

the \fIexplanation\fP, suitable for use in an SMTP response message, empty

except when a rejection (permanent or temporary) makes sense;

.IP 3. 4

the header comment on its own;

.IP 4. 4

the Received\-SPF header field as defined in RFC 4408 section 7,

incorporating the header comment.

.PP

If errors (including no SPF record found!) occur during processing,

one or more error blocks will be prepended.

These start with \(lqStartError\(lq and end with \(lqEndError\(lq.

.PP

The result codes and their corresponding exit codes are as follows:

.TP

.B 1 \(en neutral

The sender domain explicitly makes no assertion about the \fIip-address\fP.

This result must be interpreted exactly as if no SPF record at all existed.

.TP

.B 2 \(en pass

The \fIip-address\fP is authorized to send mail for the sender domain.

.TP

.B 3 \(en fail

The \fIip-address\fP is \fBunauthorized\fP to send mail for the sender domain.

.TP

.B 4 \(en softfail

The \fIip-address\fP 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.

.TP

.B 5 \(en none

No SPF record was found.

.TP

.BR "6 \(en error" " (temporary)"

A transient error occurred (e.g. failure to reach a DNS server), preventing a

result from being reached.

.TP

.BR "7 \(en unknown" " (permanent error)"

One or more SPF records could not be interpreted.

.SH EXAMPLES

.nf

spfquery \-ip=11.22.33.44 \-sender=user@aol.com \-helo=spammer.tld

spfquery \-f test_data

echo "127.0.0.1 myname@mydomain.com helohost.com" | spfquery \-f \-

.fi

.SH SEE ALSO

\fBspftest\fR(1), \fBspfd\fR(8)

.SH AUTHOR

\fBspfquery\fP was written by Wayne Schlitt.

.PP

This manual page was written by Magnus Holmgren for the Debian\*[R]

system (but may be used by others). Heavily inspired by the spfquery manpage of

libmail\-spf\-query\-perl (\fBspfquery.mail\-spf\-query\-perl\fR(1)) by Julian Mehnle.

Also based on the command\-line help of spfquery.

.SH COPYRIGHT

Copyright \(co 2007 Magnus Holmgren. Permission is granted to copy,

distribute and/or modify this document under the terms of the BSD

License.

.PP

On Debian systems, the complete text of the BSD License can be found in /usr/share/common\-licenses/BSD.