308 lines
9.6 KiB
Django/Jinja
308 lines
9.6 KiB
Django/Jinja
### {{ ansible_managed }}
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smtpd_banner = {{ postfix_smtpd_banner }}
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### Debug Logging
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#debug_peer_list =
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### Protocols and destinations
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inet_interfaces = all
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inet_protocols = ipv4
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myhostname = $myorigin
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myorigin = {{ postfix_myorigin }}
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mydestination = {{ postfix_mydestination | join(', ') }}
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mynetworks = {{ postfix_mynetworks | join(', ') }}
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### TLS settings
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tls_ssl_options = NO_COMPRESSION, NO_RENEGOTIATION
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tls_preempt_cipherlist = no
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tls_medium_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:DHE-RSA-AES256-SHA
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tls_high_cipherlist=EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA256:EECDH:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA128-SHA:AES128-SHA
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### TLS settings for SMTP server
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smtpd_tls_security_level = may
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smtpd_tls_auth_only = yes
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smtpd_tls_cert_file = {{ postfix_smtpd_tls_cert_file }}
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smtpd_tls_key_file = {{ postfix_smtpd_tls_key_file }}
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smtpd_tls_ciphers = medium
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smtpd_tls_mandatory_ciphers = medium
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smtpd_tls_exclude_ciphers = aNULL, eNULL, MD5, DES, 3DES, DES-CBC3-SHA, RC4-SHA, AES256-SHA, AES128-SHA, DHE-RSA-AES256-SHA
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#Einige berechtigte Mailserver nutzen nur TLSv1
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#smtpd_tls_mandatory_protocols = !TLSv1
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#smtpd_tls_protocols = !TLSv1
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smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
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smtpd_tls_session_cache_timeout = 7200s
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smtpd_tls_loglevel = 1
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smtpd_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
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smtpd_tls_dh1024_param_file = {{ postfix_dhparam_file }}
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smtpd_tls_eecdh_grade = strong
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### TLS settings for SMTP client
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smtp_tls_security_level = dane
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smtp_dns_support_level = dnssec
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smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
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smtp_tls_session_cache_timeout = 7200s
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#Some mailserver use only TLSv1. Hence we can't disable it.
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#smtp_tls_protocols = !TLSv1
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{% if postfix_smtp_tls_policy_maps is defined %}
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smtp_tls_policy_maps =
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{% for map in postfix_smtp_tls_policy_maps %}
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{{ map.type }}:{{ map.path }}
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{% endfor %}
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{% endif %}
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smtp_tls_ciphers = medium
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smtp_tls_fingerprint_digest = sha1
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smtp_tls_loglevel = 1
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smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
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smtp_pix_workarounds = disable_esmtp
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### Domains and recipients
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{% if postfix_virtual_mailbox_domains is defined %}
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virtual_mailbox_domains =
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{% for map in postfix_virtual_mailbox_domains %}
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{{ map.type }}:{{ map.path }}
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{% endfor %}
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{% endif %}
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{% if postfix_virtual_mailbox_maps is defined %}
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# Check for existing recipients
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virtual_mailbox_maps =
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{% for map in postfix_virtual_mailbox_maps %}
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{{ map.type }}:{{ map.path }}
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{% endfor %}
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{% endif %}
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{% if postfix_virtual_alias_maps is defined %}
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virtual_alias_maps =
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{% for map in postfix_virtual_alias_maps %}
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{{ map.type }}:{{ map.path}}
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{% endfor %}
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{% endif %}
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{% if postfix_virtual_transport is defined %}
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virtual_transport =
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{% for map in postfix_virtual_transport %}
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{{ map.type }}:{{ map.address }}
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{% endfor %}
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{% endif %}
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{% if postfix_relay_domains is defined %}
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# Relay mails without recipient check
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relay_domains =
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{% for map in postfix_relay_domains %}
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{{ map.type}}:{{ map.path }}
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{% endfor %}
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{% endif %}
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{% if postfix_sender_dependent_relayhost_maps is defined %}
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sender_dependent_relayhost_maps =
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{% for map in postfix_sender_dependent_relayhost_maps %}
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{{ map.type }}:{{ map.path }}
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{% endfor %}
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{% endif %}
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{% if postfix_transport_maps is defined %}
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transport_maps =
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{% for map in postfix_transport_maps %}
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{{ map.type }}:{{ map.path }}
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{% endfor %}
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{% endif %}
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{% if postfix_smtpd_sasl_type is defined %}
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### SMTP Auth, server side
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broken_sasl_auth_clients = yes
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smtpd_sasl_type = {{ postfix_smtpd_sasl_type }}
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smtpd_sasl_path = {{ postfix_smtpd_sasl_path }}
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smtpd_sasl_auth_enable = no
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{% if postfix_smtpd_sasl_exceptions_networks is defined %}
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# Some clients demand SASL Auth if the server offers it
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smtpd_sasl_exceptions_networks = {{ postfix_smtpd_sasl_exceptions_networks | join(', ') }}
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{% endif %}
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{% endif %}
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{% if postfix_smtp_sasl_auth is defined and postfix_smtp_sasl_auth %}
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### SMTP Auth client side
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smtp_sasl_auth_enable = yes
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smtp_sasl_auth_soft_bounce = no
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smtp_sasl_password_maps = hash:/etc/postfix/sasl/sasl_passwd
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smtp_sasl_security_options = noanonymous
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{% endif %}
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#### Postscreen
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postscreen_access_list =
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permit_mynetworks
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cidr:/etc/postfix/conf.d/postscreen_access.cidr
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postscreen_blacklist_action = drop
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# Pregreeting
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postscreen_greet_action = drop
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# DNS block lists
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postscreen_dnsbl_threshold = 2
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postscreen_dnsbl_sites =
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bl.spamcop.net*1
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ix.dnsbl.manitu.net*2
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zen.spamhaus.org*2
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postscreen_dnsbl_action = drop
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# Postfix runs restrictions with the following order
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# - smtpd_client_restriction
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# - smtpd_helo_restriction
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# - smtpd_sender_restrition
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# - smtpd_relay_restrictions
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# - smtpd_recipient_restrictions
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# - smtpd_data_restriction
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# - smtpd_end_of_data_restriction
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# - smtpd_etrn_restriction
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smtpd_restriction_classes = permit_login_mismatch
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smtpd_client_restrictions =
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permit_mynetworks,
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permit_sasl_authenticated,
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check_client_access cdb:/etc/postfix/conf.d/client_checks,
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reject_unknown_client_hostname,
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permit
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# Reject only after RCPT-TO
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smtpd_delay_reject = yes
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# Enforce helo to apply restrictions
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smtpd_helo_required = yes
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smtpd_helo_restrictions =
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permit_mynetworks,
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permit_sasl_authenticated,
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check_helo_access pcre:/etc/postfix/conf.d/helo_checks,
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reject_non_fqdn_helo_hostname,
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reject_invalid_helo_hostname,
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permit
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smtpd_sender_restrictions =
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permit_mynetworks,
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check_sender_access cdb:/etc/postfix/conf.d/sender_checks,
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reject_non_fqdn_sender,
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reject_unknown_sender_domain,
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check_sender_mx_access cidr:/etc/postfix/conf.d/bogus_mx,
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#Uncomment the next two lines to block mails from other servers with our domain as MAIL FROM
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#permit_sasl_authenticated,
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#check_sender_access hash:/etc/postfix/conf.d/sender_checks_domain,
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permit
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# Restrictions for submission port
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mua_sender_restrictions =
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check_sasl_access cdb:/etc/postfix/conf.d/permit_sasl_login_mismatch,
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permit_mynetworks,
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check_sender_access cdb:/etc/postfix/conf.d/sender_checks,
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reject_non_fqdn_sender,
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reject_unknown_sender_domain,
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reject_sender_login_mismatch,
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permit_sasl_authenticated
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permit_login_mismatch =
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permit_mynetworks,
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reject_non_fqdn_sender,
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reject_unknown_sender_domain,
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permit_sasl_authenticated
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submission_bad_smtp_user_check =
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check_sasl_access cdb:/etc/postfix/conf.d/bad_smtp_auth_users
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smtpd_relay_restrictions =
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permit_mynetworks,
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permit_sasl_authenticated,
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check_client_access cdb:/etc/postfix/conf.d/relay_checks,
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reject_unauth_destination
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smtpd_recipient_restrictions =
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reject_unauth_pipelining,
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reject_non_fqdn_recipient,
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reject_unknown_recipient_domain,
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permit_mynetworks,
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permit_sasl_authenticated,
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reject_unverified_recipient
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# Configuration for reject_unverified_recipient
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unverified_recipient_reject_reason = User unknown / Nutzer unbekannt
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unverified_recipient_reject_code = 550
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smtpd_data_restrictions =
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reject_multi_recipient_bounce,
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check_recipient_access pcre:/etc/postfix/conf.d/header_add,
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### Connection limits
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smtpd_client_connection_rate_limit = 100
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smtpd_client_event_limit_exceptions = {{ postfix_smtpd_client_event_limit_exceptions | join(', ') }}
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smtpd_client_message_rate_limit = 25
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smtpd_client_new_tls_session_rate_limit = 100
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smtpd_client_auth_rate_limit = 100
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default_destination_rate_delay = 60s
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default_destination_recipient_limit = 1
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default_destination_concurrency_failed_cohort_limit = 10
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header_checks = pcre:/etc/postfix/conf.d/header_checks
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### Spam and DKIM
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{% if postfix_smtpd_milters is defined %}
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smtpd_milters =
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{% for map in postfix_smtpd_milters %}
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{{ map.type }}:{{ map.address }}
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{% endfor %}
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{% endif %}
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{% if postfix_non_smtpd_milters is defined %}
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non_smtpd_milters =
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{% for map in postfix_non_smtpd_milters %}
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{{ map.type }}:{{ map.address }}
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{% endfor %}
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{% endif %}
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milter_default_action = accept
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milter_connect_macros = i j {daemon_name} v {if_name} _
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milter_mail_macros = i {auth_type} {auth_authen} {auth_author} {mail_addr} {mail_host} {mail_mailer} {client_addr} {client_name}
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milter_rcpt_macros = i j _ {auth_type} {rcpt_addr} {rcpt_host} {rcpt_mailer}
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milter_connect_timeout = 20s
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# Prevent DKIM signatures (don't allow spam header to change the signature)
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disable_mime_output_conversion = yes
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### Misc
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readme_directory = /usr/share/doc/postfix
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html_directory = /usr/share/doc/postfix/html
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disable_vrfy_command = yes
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recipient_delimiter = +
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# Postfix-default: alias_maps = hash:/etc/mail/aliases nis:mail.aliases
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# Prevents delays caused by NIS queries
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alias_maps =
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# Error notifications
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# http://www.postfix.org/postconf.5.html#notify_classes
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notify_classes = data, delay, resource, software
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minimal_backoff_time = 1000s
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maximal_backoff_time = 4h
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compatibility_level = 2
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biff = no
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append_dot_mydomain = no
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# Uncomment the next line to generate "delayed mail" warnings
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#delay_warning_time = 4h
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# Add missing headers
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always_add_missing_headers = yes
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local_header_rewrite_clients = permit_mynetworks
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mailbox_size_limit = 0
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message_size_limit = {{ postfix_message_size_limit }}
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### Destination limits
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# Some mail server limit concurrent connections
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# Solves: Maximum parallel connections for your IP-Address
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dlimit_destination_concurrency_limit = 4
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dlimit_destination_recipient_limit = 3
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dlimit_destination_rate_delay = 5s
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{% if postfix_proxy_read_maps is defined %}
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### Proxy maps
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proxy_read_maps =
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{% for map in postfix_proxy_read_maps %}
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{{ map }}
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{% endfor %}
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{% endif %}
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