mirror of
https://github.com/docker-mailserver/docker-mailserver.git
synced 2024-01-19 02:48:50 +00:00
116 lines
4.8 KiB
CFEngine3
116 lines
4.8 KiB
CFEngine3
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
|
|
|
|
smtpd_banner = $myhostname ESMTP
|
|
biff = no
|
|
append_dot_mydomain = no
|
|
readme_directory = no
|
|
|
|
# Basic configuration
|
|
# myhostname =
|
|
alias_maps = hash:/etc/aliases
|
|
alias_database = hash:/etc/aliases
|
|
mydestination = $myhostname, localhost.$mydomain, localhost
|
|
relayhost =
|
|
mynetworks = 127.0.0.0/8 [::1]/128 [fe80::]/64
|
|
mailbox_size_limit = 0
|
|
recipient_delimiter = +
|
|
inet_interfaces = all
|
|
inet_protocols = all
|
|
|
|
# TLS parameters
|
|
# These [snakeoil files actually exist](https://askubuntu.com/questions/396120/what-is-the-purpose-of-the-ssl-cert-snakeoil-key), but shouldn't ever be used in production!
|
|
# If no `SSL_TYPE` env is set, "plaintext" is configured, but still accepts SSL with these:
|
|
smtpd_tls_chain_files = /etc/ssl/private/ssl-cert-snakeoil.key /etc/ssl/certs/ssl-cert-snakeoil.pem
|
|
#smtpd_tls_CAfile =
|
|
#smtp_tls_CAfile =
|
|
smtpd_tls_security_level = may
|
|
smtpd_tls_loglevel = 1
|
|
smtp_tls_security_level = may
|
|
smtp_tls_loglevel = 1
|
|
|
|
# Reduces CPU overhead with `NO_COMPRESSION`, SMTP not at risk of CRIME attack (see git blame for details)
|
|
# Reduce opportunities for a potential CPU exhaustion attack with `NO_RENEGOTIATION`
|
|
tls_ssl_options = NO_COMPRESSION, NO_RENEGOTIATION
|
|
|
|
tls_high_cipherlist = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
|
|
tls_preempt_cipherlist = yes
|
|
smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
|
|
smtp_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
|
|
smtpd_tls_mandatory_ciphers = high
|
|
smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
|
|
smtpd_tls_exclude_ciphers = aNULL, SEED, CAMELLIA, RSA+AES, SHA1
|
|
smtpd_tls_dh1024_param_file = /etc/postfix/dhparams.pem
|
|
smtpd_tls_CApath = /etc/ssl/certs
|
|
smtp_tls_CApath = /etc/ssl/certs
|
|
|
|
# Settings to prevent SPAM early
|
|
smtpd_helo_required = yes
|
|
smtpd_delay_reject = yes
|
|
smtpd_helo_restrictions = permit_mynetworks, reject_invalid_helo_hostname, permit
|
|
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
|
|
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, check_policy_service unix:private/policyd-spf, reject_unauth_pipelining, reject_invalid_helo_hostname, reject_non_fqdn_helo_hostname, reject_unknown_recipient_domain
|
|
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_unauth_pipelining
|
|
smtpd_sender_restrictions = $dms_smtpd_sender_restrictions
|
|
disable_vrfy_command = yes
|
|
|
|
# Custom defined parameters for DMS:
|
|
dms_smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_sender_domain, reject_unknown_client_hostname
|
|
# Submission ports 587 and 465 support for SPOOF_PROTECTION=1
|
|
mua_sender_restrictions = reject_authenticated_sender_login_mismatch, $dms_smtpd_sender_restrictions
|
|
|
|
# Postscreen settings to drop zombies/open relays/spam early
|
|
postscreen_dnsbl_action = enforce
|
|
postscreen_dnsbl_sites =
|
|
zen.spamhaus.org=127.0.0.[2..11]*3
|
|
bl.mailspike.net=127.0.0.[2;14;13;12;11;10]
|
|
b.barracudacentral.org*2
|
|
bl.spameatingmonkey.net=127.0.0.2
|
|
dnsbl.sorbs.net
|
|
psbl.surriel.com
|
|
list.dnswl.org=127.0.[0..255].0*-2
|
|
list.dnswl.org=127.0.[0..255].1*-3
|
|
list.dnswl.org=127.0.[0..255].[2..3]*-4
|
|
postscreen_dnsbl_threshold = 3
|
|
postscreen_dnsbl_whitelist_threshold = -1
|
|
postscreen_greet_action = enforce
|
|
postscreen_bare_newline_action = enforce
|
|
|
|
# SASL
|
|
smtpd_sasl_auth_enable = no
|
|
smtpd_sasl_path = /dev/shm/sasl-auth.sock
|
|
smtpd_sasl_type = dovecot
|
|
|
|
smtpd_sasl_security_options = noanonymous
|
|
smtpd_sasl_local_domain = $mydomain
|
|
broken_sasl_auth_clients = yes
|
|
|
|
# Mail directory
|
|
virtual_transport = lmtp:unix:/var/run/dovecot/lmtp
|
|
virtual_mailbox_domains = /etc/postfix/vhost
|
|
virtual_mailbox_maps = texthash:/etc/postfix/vmailbox
|
|
virtual_alias_maps = texthash:/etc/postfix/virtual
|
|
|
|
# Milters used by DKIM
|
|
milter_protocol = 6
|
|
milter_default_action = accept
|
|
smtpd_milters =
|
|
non_smtpd_milters =
|
|
|
|
# SPF policy settings
|
|
policyd-spf_time_limit = 3600
|
|
|
|
# Header checks for content inspection on receiving
|
|
header_checks = pcre:/etc/postfix/maps/header_checks.pcre
|
|
|
|
# Remove unwanted headers that reveal our privacy
|
|
smtp_header_checks = pcre:/etc/postfix/maps/sender_header_filter.pcre
|
|
|
|
# The default compatibility_level is 0 - which retains legacy settings defaults:
|
|
# http://www.postfix.org/COMPATIBILITY_README.html
|
|
# If backwards-compaitibilty log messages appear, fix them by explicitly adding
|
|
# the legacy or new default value (alternatively raise the compatibility_level)
|
|
#
|
|
# TODO: The next compatibility_level is 3.6, when Postfix 3.6 is available consider
|
|
# bumping this value after taking the compaitibilty changes into account.
|
|
compatibility_level = 2
|