1MTA-STS-QUERY(1)                 mta-sts-query                MTA-STS-QUERY(1)
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NAME

6       mta-sts-query - retrieve MTA-STS policy of a domain
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SYNOPSIS

9       mta-sts-query [OPTION]... DOMAIN [KNOWN_VERSION]
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DESCRIPTION

12       Retrieve the MTA-STS policy of a domain and display the result on
13       standard output. This diagnostic utility is also useful without
14       Postfix.
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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 verbosity level: debug, info, warn (default), error, or fatal.
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27       DOMAIN
28           domain for which to retrieve the MTA-STS policy
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30       KNOWN_VERSION
31           latest known version (default: None)
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EXAMPLES

34       Retrieve MTA-STS policy for dismail.de:
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36       mta-sts-query dismail.de
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SEE ALSO

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

42       0.
43           SMTP MTA Strict Transport Security (MTA-STS):
44           https://tools.ietf.org/html/rfc8461
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48postfix-mta-sts-resolver          2023-09-09                  MTA-STS-QUERY(1)