1MTA-STS-DAEMON(1)               mta-sts-daemon               MTA-STS-DAEMON(1)
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NAME

6       mta-sts-daemon - provide MTA-STS policy to Postfix as policy map
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SYNOPSIS

9       mta-sts-daemon [OPTION]...
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DESCRIPTION

12       This daemon opens a socket where Postfix can query and retrieve the
13       MTA-STS policy for a domain. The configuration file is described in
14       mta-sts-daemon.yml(5).
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16       MTA-STS, specified in RFC 8461 [0], is a security standard for email
17       servers. When a site configures MTA-STS, other mail servers can require
18       the successful authentication of that site when forwarding mail there.
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OPTIONS

21       -h, --help
22           show a help message and exit
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24       -v, --verbosity VERBOSITY
25           set log verbosity level: debug, info (default), warn, error, or
26           fatal.
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28       -c, --config FILE
29           config file location (default: /etc/mta-sts-daemon.yml)
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31       -l, --logfile FILE
32           log file location (default: none)
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34       --disable-uvloop
35           do not use uvloop even if it is available (default: enabled if
36           available)
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EXAMPLES

39       Configure Postfix in /etc/postfix/main.cf:
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41           smtp_tls_policy_maps = socketmap:inet:127.0.0.1:8461:postfix
42           smtp_tls_CApath = /etc/ssl/certs/
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44       Reload Postfix. Then verify it works:
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46       /usr/sbin/postmap -q dismail.de socketmap:inet:127.0.0.1:8461:postfix
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SEE ALSO

49       mta-sts-query(1), mta-sts-daemon.yml(5)
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NOTES

52       0.
53           SMTP MTA Strict Transport Security (MTA-STS):
54           https://tools.ietf.org/html/rfc8461
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58postfix-mta-sts-resolver          2021-01-27                 MTA-STS-DAEMON(1)