roles/postfix/templates/main.cf

   1 compatibility_level = 2
   2
   3 # local delivery: aliases only
   4 alias_maps = hash:/etc/aliases
   5 local_recipient_maps = $alias_maps
   6 {% if postfix.mynetworks is defined %}
   7 mynetworks = {{ postfix.mynetworks }}
   8 {% endif %}
   9
  10 # TLS server parameters
  11 smtpd_tls_cert_file=/etc/ssl/mycerts/letsencrypt/live.crt+chain
  12 smtpd_tls_key_file=/etc/ssl/private/letsencrypt/live.key
  13 smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
  14 smtpd_tls_security_level = may
  15 smtpd_tls_loglevel = 1
  16 smtpd_tls_dh1024_param_file = /etc/ssl/dh2048.pem
  17 smtpd_tls_mandatory_protocols = !SSLv2 !SSLv3
  18 smtpd_tls_ciphers = low
  19 smtpd_tls_mandatory_ciphers = high
  20 # TLS client parameters
  21 smtp_tls_mandatory_protocols = !SSLv2 !SSLv3
  22 smtp_tls_ciphers = low
  23 smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
  24 smtp_tls_loglevel = 1
  25 {% if not(postfix.relay_host is defined) %}
  26 smtp_tls_security_level = dane
  27 smtp_dns_support_level = dnssec
  28 {% endif %}
  29
  30 {% if postfix.postscreen | default(False) %}
  31 # postscreen config
  32 postscreen_dnsbl_threshold = 3
  33 postscreen_dnsbl_whitelist_threshold = -2
  34 postscreen_dnsbl_sites =
  35         ix.dnsbl.manitu.net*2 sbl-xbl.spamhaus.org*2
  36         bl.spamcop.net dnsbl.sorbs.net bl.mailspike.net
  37         swl.spamhaus.org*-2 list.dnswl.org=127.0.[0..255].[0..254]*-2
  38 postscreen_greet_action = enforce
  39 postscreen_dnsbl_action = enforce
  40 postscreen_pipelining_enable = yes
  41 postscreen_non_smtp_command_enable = yes
  42 postscreen_bare_newline_enable = yes
  43 {% endif %}
  44
  45 # control relay access
  46 smtpd_relay_restrictions = permit_mynetworks, permit_tls_clientcerts,
  47     # allow nobody else
  48     defer_unauth_destination
  49 # spam-protection restrictions
  50 smtpd_helo_required = yes
  51 smtpd_recipient_restrictions = permit_mynetworks, permit_tls_clientcerts,
  52     # check everybody else
  53     reject_unauth_pipelining,
  54     reject_invalid_helo_hostname,
  55     reject_non_fqdn_recipient,
  56     reject_non_fqdn_sender,
  57
  58 {% if postfix.relay_host is defined %}
  59 # Relay everything
  60 default_transport = smtp:{{ postfix.relay_host }}
  61 {% if postfix.relay_client_cert is defined %}
  62 # Enforce relay encryption
  63 smtp_tls_cert_file=$config_directory/{{ postfix.relay_client_cert }}.crt
  64 smtp_tls_key_file=$config_directory/{{ postfix.relay_client_cert }}.key
  65 smtp_tls_security_level = encrypt
  66 {% endif %}
  67 {% endif %}
  68
  69 {% if postfix.submission | default(False) %}
  70 # configure SASL
  71 smtpd_sasl_type = dovecot
  72 smtpd_sasl_path = private/auth
  73 {% endif %}
  74
  75 {% if postfix.relay_client_cert_whitelist is defined %}
  76 # allow relay for some TLS-authenticated clients
  77 smtpd_tls_ask_ccert = yes
  78 smtpd_tls_fingerprint_digest = sha1
  79 relay_clientcerts = hash:$config_directory/{{ postfix.relay_client_cert_whitelist }}
  80 {% endif %}
  81
  82 {% if postfix.virtual_mailbox_domains is defined %}
  83 # setup virtual delivery domains, aliases and destinations
  84 virtual_mailbox_domains = {{ postfix.virtual_mailbox_domains }}
  85 virtual_alias_maps = hash:$config_directory/virtual_alias_map
  86   {% if postfix.vmail_mysql_password is defined %}
  87   proxy:mysql:$config_directory/mysql_vmail_aliases.cf
  88   {% endif %}
  89 #
  90 virtual_mailbox_maps =
  91   {% if postfix.vmail_mysql_password is defined %}
  92   proxy:mysql:$config_directory/mysql_vmail_users.cf
  93   {% endif %}
  94   {% if postfix.mailman | default(False) %}
  95   hash:/var/lib/mailman/data/virtual-mailman
  96   {% endif %}
  97 #
  98 smtpd_sender_login_maps =
  99   {% if postfix.vmail_mysql_password is defined %}
 100   proxy:mysql:$config_directory/mysql_vmail_users.cf
 101   proxy:mysql:$config_directory/mysql_vmail_senders.cf
 102   proxy:mysql:$config_directory/mysql_vmail_aliases.cf
 103   {% endif %}
 104 #
 105 proxy_read_maps = $virtual_alias_maps $virtual_mailbox_maps $smtpd_sender_login_maps
 106
 107 # setup mail routes for virtual mail: all mail ends up being forwarded somewhere
 108 virtual_transport = error
 109 transport_maps = hash:/etc/postfix/transport_map
 110 mailman_destination_recipient_limit = 1
 111 {% endif %}
 112
 113 {% if postfix.opendkim is defined %}
 114 # DKIM & Milter
 115 milter_default_action = accept
 116 # Path must match opendkim.env
 117 smtpd_milters = unix:opendkim/sock
 118 non_smtpd_milters = $smtpd_milters
 119 {% endif %}
 120
 121 # misc
 122 smtpd_delay_reject = yes
 123 disable_vrfy_command = yes
 124 recipient_delimiter = +
 125 delay_warning_time = 4h
 126 message_size_limit = 21384000