1MTA-STS-DAEMON(1)               mta-sts-daemon               MTA-STS-DAEMON(1)
2
3
4

NAME

6       mta-sts-daemon - provide MTA-STS policy to Postfix as policy map
7

SYNOPSIS

9       mta-sts-daemon [OPTION]...
10

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).
15
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.
19

OPTIONS

21       -h, --help
22           show a help message and exit
23
24       -v, --verbosity VERBOSITY
25           set log verbosity level: debug, info (default), warn, error, or
26           fatal.
27
28       -c, --config FILE
29           config file location (default: /etc/mta-sts-daemon.yml)
30
31       -l, --logfile FILE
32           log file location (default: none)
33
34       --disable-uvloop
35           do not use uvloop even if it is available (default: enabled if
36           available)
37

EXAMPLES

39       Configure Postfix in /etc/postfix/main.cf:
40
41           smtp_tls_policy_maps = socketmap:inet:127.0.0.1:8461:postfix
42           smtp_tls_CApath = /etc/ssl/certs/
43
44       Reload Postfix. Then verify it works:
45
46       /usr/sbin/postmap -q dismail.de socketmap:inet:127.0.0.1:8461:postfix
47

SEE ALSO

49       mta-sts-query(1), mta-sts-daemon.yml(5)
50

NOTES

52       0.
53           SMTP MTA Strict Transport Security (MTA-STS):
54           https://tools.ietf.org/html/rfc8461
55
56
57
58postfix-mta-sts-resolver          2022-01-21                 MTA-STS-DAEMON(1)