'\" t
.\"     Title: mta-sts-query
.\"    Author: [see the "AUTHOR(S)" section]
.\" Generator: Asciidoctor 1.5.8
.\"      Date: 2020-12-05
.\"    Manual: mta-sts-query
.\"    Source: postfix-mta-sts-resolver
.\"  Language: English
.\"
.TH "MTA\-STS\-QUERY" "1" "2020-12-05" "postfix\-mta\-sts\-resolver" "mta\-sts\-query"
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.SH "NAME"
mta\-sts\-query \- retrieve MTA\-STS policy of a domain
.SH "SYNOPSIS"
.sp
\fBmta\-sts\-query\fP [\fIOPTION\fP]... \fIDOMAIN\fP [\fIKNOWN_VERSION\fP]
.SH "DESCRIPTION"
.sp
Retrieve the MTA\-STS policy of a domain and display the result on standard
output.  This diagnostic utility is also useful without Postfix.
.sp
MTA\-STS, specified in RFC 8461 [0], is a security standard for email servers.
When a site configures MTA\-STS, other mail servers can require the
successful authentication of that site when forwarding mail there.
.SH "OPTIONS"
.sp
\fB\-h, \-\-help\fP
.RS 4
show a help message and exit
.RE
.sp
\fB\-v, \-\-verbosity\fP \fIVERBOSITY\fP
.RS 4
set verbosity level: \fIdebug\fP, \fIinfo\fP, \fIwarn\fP (default), \fIerror\fP, or \fIfatal\fP.
.RE
.sp
\fBDOMAIN\fP
.RS 4
domain for which to retrieve the MTA\-STS policy
.RE
.sp
\fBKNOWN_VERSION\fP
.RS 4
latest known version (default: None)
.RE
.SH "EXAMPLES"
.sp
Retrieve MTA\-STS policy for dismail.de:
.sp
\fBmta\-sts\-query dismail.de\fP
.SH "SEE ALSO"
.sp
\fBmta\-sts\-daemon\fP(1), \fBmta\-sts\-daemon.yml\fP(5)
.SH "NOTES"
.sp
0.
.RS 4
\fBSMTP MTA Strict Transport Security (MTA\-STS)\fP: \c
.URL "https://tools.ietf.org/html/rfc8461" "" ""
.RE