'\" t
.\"     Title: mta-sts-daemon
.\"    Author: [see the "AUTHOR(S)" section]
.\" Generator: Asciidoctor 2.0.17
.\"      Date: 2022-10-15
.\"    Manual: mta-sts-daemon
.\"    Source: postfix-mta-sts-resolver
.\"  Language: English
.\"
.TH "MTA\-STS\-DAEMON" "1" "2022-10-15" "postfix\-mta\-sts\-resolver" "mta\-sts\-daemon"
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.SH "NAME"
mta-sts-daemon \- provide MTA\-STS policy to Postfix as policy map
.SH "SYNOPSIS"
.sp
\fBmta\-sts\-daemon\fP [\fIOPTION\fP]...
.SH "DESCRIPTION"
.sp
This daemon opens a socket where Postfix can query and retrieve the MTA\-STS
policy for a domain.  The configuration file is described in
\fBmta\-sts\-daemon.yml\fP(5).
.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 log verbosity level: \fIdebug\fP, \fIinfo\fP (default), \fIwarn\fP, \fIerror\fP, or
\fIfatal\fP.
.RE
.sp
\fB\-c, \-\-config\fP \fIFILE\fP
.RS 4
config file location (default: \fI/etc/mta\-sts\-daemon.yml\fP)
.RE
.sp
\fB\-l, \-\-logfile\fP \fIFILE\fP
.RS 4
log file location (default: \fInone\fP)
.RE
.sp
\fB\-\-disable\-uvloop\fP
.RS 4
do not use uvloop even if it is available (default: enabled if available)
.RE
.SH "EXAMPLES"
.sp
Configure Postfix in \fI/etc/postfix/main.cf\fP:
.sp
.if n .RS 4
.nf
.fam C
smtp_tls_policy_maps = socketmap:inet:127.0.0.1:8461:postfix
smtp_tls_CApath = /etc/ssl/certs/
.fam
.fi
.if n .RE
.sp
Reload Postfix.  Then verify it works:
.sp
\fB/usr/sbin/postmap \-q dismail.de socketmap:inet:127.0.0.1:8461:postfix\fP
.SH "SEE ALSO"
.sp
\fBmta\-sts\-query\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