DOKK / manpages / debian 12 / postfix-mta-sts-resolver / mta-sts-query.1.en
MTA-STS-QUERY(1) mta-sts-query MTA-STS-QUERY(1)

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

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

Retrieve the MTA-STS policy of a domain and display the result on standard output. This diagnostic utility is also useful without Postfix.

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.

-h, --help

show a help message and exit

-v, --verbosity VERBOSITY

set verbosity level: debug, info, warn (default), error, or fatal.

DOMAIN

domain for which to retrieve the MTA-STS policy

KNOWN_VERSION

latest known version (default: None)

Retrieve MTA-STS policy for dismail.de:

mta-sts-query dismail.de

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

0.

SMTP MTA Strict Transport Security (MTA-STS): <https://tools.ietf.org/html/rfc8461>
2022-10-15 postfix-mta-sts-resolver