bundlewrap/bundles/postfix/files/main.cf
Franziska Kunsmann b4b988e5f2
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bundles/postfix: disable TLS1.0 and 1.1, disable weak ciphers
2020-11-08 12:24:37 +01:00

94 lines
3.6 KiB
CFEngine3

smtpd_banner = SMTPd ready
biff = no
append_dot_mydomain = no
readme_directory = no
compatibility_level = 2
myhostname = ${node.metadata.get('postfix', {}).get('myhostname', node.metadata['hostname'])}
myorigin = /etc/mailname
mydestination = $myhostname, localhost
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_protocols = all
message_size_limit = ${node.metadata.get('postfix', {}).get('message_size_limit_mb', 10)*1024*1024}
% if node.has_bundle('postfixadmin'):
inet_interfaces = all
% else:
inet_interfaces = 127.0.0.1
% endif
<%text>
smtp_use_tls = yes
smtp_tls_loglevel = 1
smtp_tls_note_starttls_offer = yes
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_security_level = dane
smtp_dns_support_level = dnssec
smtp_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtp_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtp_tls_ciphers = high
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
</%text>
% if node.has_bundle('postfixadmin'):
smtpd_tls_cert_file=/var/lib/dehydrated/certs/${node.metadata['postfix']['myhostname']}/fullchain.pem
smtpd_tls_key_file=/var/lib/dehydrated/certs/${node.metadata['postfix']['myhostname']}/privkey.pem
<%text>
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_relay_restrictions = reject_non_fqdn_recipient reject_unknown_recipient_domain permit_mynetworks reject_unauth_destination
smtpd_client_restrictions = permit_mynetworks permit_sasl_authenticated
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks reject_invalid_helo_hostname
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_tls_security_level = may
smtpd_tls_mandatory_ciphers = high
smtpd_tls_exclude_ciphers = aNULL,LOW,EXP,MEDIUM,ADH,AECDH,MD5,DSS,ECDSA,CAMELLIA128,3DES,CAMELLIA256,RSA+AES,eNULL
smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtpd_tls_ciphers = high
smtpd_tls_auth_only=yes
</%text>
relay_domains = $mydestination, pgsql:/etc/postfix/pgsql/relay_domains.cf
virtual_alias_maps = pgsql:/etc/postfix/pgsql/virtual_alias_maps.cf
virtual_mailbox_domains = pgsql:/etc/postfix/pgsql/virtual_domains_maps.cf
virtual_mailbox_maps = pgsql:/etc/postfix/pgsql/virtual_mailbox_maps.cf
virtual_mailbox_base = /var/mail/vmail
virtual_mailbox_limit = 0
virtual_minimum_uid = 115
virtual_uid_maps = static:115
virtual_gid_maps = static:115
local_transport = virtual
local_recipient_maps = $virtual_mailbox_maps
% if node.has_bundle('dovecot'):
virtual_transport = lmtp:unix:private/dovecot-lmtp
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_authenticated_header = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
% endif
% if node.has_bundle('rspamd'):
smtpd_milters = inet:localhost:11332
non_smtpd_milters = inet:localhost:11332
milter_protocol = 6
milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
milter_default_action = accept
% endif
mua_relay_restrictions = reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_mynetworks,permit_sasl_authenticated,reject
mua_sender_restrictions = permit_mynetworks,reject_non_fqdn_sender,permit_sasl_authenticated,reject
mua_client_restrictions = permit_mynetworks,permit_sasl_authenticated,reject
postscreen_access_list = permit_mynetworks
postscreen_blacklist_action = drop
postscreen_greet_action = drop
postscreen_dnsbl_threshold = 2
postscreen_dnsbl_sites = ix.dnsbl.manitu.net zen.spamhaus.org
postscreen_dnsbl_action = drop
% endif