mailcow/data/conf/postfix/main.cf

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# --------------------------------------------------------------------------
# Please create a file "extra.cf" for persistent overrides to main.cf
# --------------------------------------------------------------------------
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biff = no
append_dot_mydomain = no
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smtpd_tls_cert_file = /etc/ssl/mail/cert.pem
smtpd_tls_key_file = /etc/ssl/mail/key.pem
tls_server_sni_maps = hash:/opt/postfix/conf/sni.map
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smtpd_use_tls=yes
smtpd_tls_received_header = yes
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smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_relay_restrictions = permit_mynetworks,
permit_sasl_authenticated,
defer_unauth_destination
# alias maps are auto-generated in postfix.sh on startup
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alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 [fe80::]/10 [fc00::]/7
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mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
bounce_queue_lifetime = 1d
broken_sasl_auth_clients = yes
disable_vrfy_command = yes
maximal_backoff_time = 1800s
maximal_queue_lifetime = 5d
delay_warning_time = 4h
message_size_limit = 104857600
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milter_default_action = accept
milter_protocol = 6
minimal_backoff_time = 300s
plaintext_reject_code = 550
postscreen_access_list = permit_mynetworks,
cidr:/opt/postfix/conf/postscreen_access.cidr,
tcp:127.0.0.1:10027
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postscreen_bare_newline_enable = no
postscreen_blacklist_action = drop
postscreen_cache_cleanup_interval = 24h
postscreen_cache_map = proxy:btree:$data_directory/postscreen_cache
postscreen_dnsbl_action = enforce
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postscreen_dnsbl_sites = wl.mailspike.net=127.0.0.[18;19;20]*-2
hostkarma.junkemailfilter.com=127.0.0.1*-2
list.dnswl.org=127.0.[0..255].0*-2
list.dnswl.org=127.0.[0..255].1*-4
list.dnswl.org=127.0.[0..255].2*-6
list.dnswl.org=127.0.[0..255].3*-8
ix.dnsbl.manitu.net*2
bl.spamcop.net*2
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bl.suomispam.net*2
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hostkarma.junkemailfilter.com=127.0.0.2*3
hostkarma.junkemailfilter.com=127.0.0.4*2
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hostkarma.junkemailfilter.com=127.0.1.2*1
backscatter.spameatingmonkey.net*2
bl.ipv6.spameatingmonkey.net*2
bl.spameatingmonkey.net*2
b.barracudacentral.org=127.0.0.2*7
bl.mailspike.net=127.0.0.2*5
bl.mailspike.net=127.0.0.[10;11;12]*4
dnsbl.sorbs.net=127.0.0.10*8
dnsbl.sorbs.net=127.0.0.5*6
dnsbl.sorbs.net=127.0.0.7*3
dnsbl.sorbs.net=127.0.0.8*2
dnsbl.sorbs.net=127.0.0.6*2
dnsbl.sorbs.net=127.0.0.9*2
zen.spamhaus.org=127.0.0.[10;11]*8
zen.spamhaus.org=127.0.0.[4..7]*6
zen.spamhaus.org=127.0.0.3*4
zen.spamhaus.org=127.0.0.2*3
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postscreen_dnsbl_threshold = 6
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postscreen_dnsbl_ttl = 5m
postscreen_greet_action = enforce
postscreen_greet_banner = $smtpd_banner
postscreen_greet_ttl = 2d
postscreen_greet_wait = 3s
postscreen_non_smtp_command_enable = no
postscreen_pipelining_enable = no
proxy_read_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_sasl_passwd_maps_transport_maps.cf,
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proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,
$sender_dependent_default_transport_maps,
$smtp_tls_policy_maps,
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$local_recipient_maps,
$mydestination,
$virtual_alias_maps,
$virtual_alias_domains,
$virtual_mailbox_maps,
$virtual_mailbox_domains,
$relay_recipient_maps,
$relay_domains,
$canonical_maps,
$sender_canonical_maps,
$sender_bcc_maps,
$recipient_bcc_maps,
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$recipient_canonical_maps,
$relocated_maps,
$transport_maps,
$mynetworks,
$smtpd_sender_login_maps,
$smtp_sasl_password_maps
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queue_run_delay = 300s
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relay_domains = proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_relay_domain_maps.cf
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relay_recipient_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_relay_recipient_maps.cf
sender_dependent_default_transport_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_sender_dependent_default_transport_maps.cf
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smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
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smtp_tls_cert_file = /etc/ssl/mail/cert.pem
smtp_tls_key_file = /etc/ssl/mail/key.pem
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smtp_tls_loglevel = 1
smtp_dns_support_level = dnssec
smtp_tls_security_level = dane
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smtpd_data_restrictions = reject_unauth_pipelining, permit
smtpd_delay_reject = yes
smtpd_error_sleep_time = 10s
smtpd_hard_error_limit = ${stress?1}${stress:5}
smtpd_helo_required = yes
smtpd_proxy_timeout = 600s
smtpd_recipient_restrictions = permit_sasl_authenticated,
permit_mynetworks,
check_recipient_access proxy:mysql:/opt/postfix/conf/sql/mysql_tls_enforce_in_policy.cf,
reject_invalid_helo_hostname,
reject_unauth_destination
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smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_path = inet:dovecot:10001
smtpd_sasl_type = dovecot
smtpd_sender_login_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_sender_acl.cf
smtpd_sender_restrictions = reject_authenticated_sender_login_mismatch,
permit_mynetworks,
permit_sasl_authenticated,
reject_unlisted_sender,
reject_unknown_sender_domain
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smtpd_soft_error_limit = 3
smtpd_tls_auth_only = yes
smtpd_tls_dh1024_param_file = /etc/ssl/mail/dhparams.pem
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smtpd_tls_eecdh_grade = auto
smtpd_tls_exclude_ciphers = ECDHE-RSA-RC4-SHA, RC4, aNULL, DES-CBC3-SHA, ECDHE-RSA-DES-CBC3-SHA, EDH-RSA-DES-CBC3-SHA
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smtpd_tls_loglevel = 1
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# Mandatory protocols and ciphers are used when a connections is enforced to use TLS
# Does _not_ apply to enforced incoming TLS settings per mailbox
smtp_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
lmtp_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
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smtpd_tls_mandatory_ciphers = high
smtp_tls_protocols = !SSLv2, !SSLv3
lmtp_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1
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smtpd_tls_protocols = !SSLv2, !SSLv3
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smtpd_tls_security_level = may
tls_preempt_cipherlist = yes
tls_ssl_options = NO_COMPRESSION, NO_RENEGOTIATION
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virtual_alias_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_alias_maps.cf,
proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_resource_maps.cf,
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proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_spamalias_maps.cf,
proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_alias_domain_maps.cf
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virtual_gid_maps = static:5000
virtual_mailbox_base = /var/vmail/
virtual_mailbox_domains = proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_domains_maps.cf
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recipient_bcc_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_recipient_bcc_maps.cf
sender_bcc_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_sender_bcc_maps.cf
recipient_canonical_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_recipient_canonical_maps.cf
recipient_canonical_classes = envelope_recipient
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virtual_mailbox_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_virtual_mailbox_maps.cf
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virtual_minimum_uid = 104
virtual_transport = lmtp:inet:dovecot:24
virtual_uid_maps = static:5000
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smtpd_milters = inet:rspamd:9900
non_smtpd_milters = inet:rspamd:9900
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milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen}
mydestination = localhost.localdomain, localhost
# Prefere IPv4, useful for v4-only envs
smtp_address_preference = ipv4
smtp_sender_dependent_authentication = yes
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = proxy:mysql:/opt/postfix/conf/sql/mysql_sasl_passwd_maps_sender_dependent.cf
smtp_sasl_security_options =
smtp_sasl_mechanism_filter = plain, login
smtp_tls_policy_maps=proxy:mysql:/opt/postfix/conf/sql/mysql_tls_policy_override_maps.cf
smtp_header_checks = pcre:/opt/postfix/conf/anonymize_headers.pcre
mail_name = Postcow
# local_transport map catches local destinations and prevents routing local dests when the next map would route "*"
# Use custom_transport.pcre for custom transports
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transport_maps = pcre:/opt/postfix/conf/custom_transport.pcre,
pcre:/opt/postfix/conf/local_transport,
proxy:mysql:/opt/postfix/conf/sql/mysql_transport_maps.cf
smtp_sasl_auth_soft_bounce = no
postscreen_discard_ehlo_keywords = silent-discard, dsn
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compatibility_level = 2
smtputf8_enable = yes
# Define protocols for SMTPS and submission service
submission_smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
smtps_smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
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# DO NOT EDIT ANYTHING BELOW #
# User overrides #