formula-postfix/postfix/files/main.cf

{% from "postfix/map.jinja" import postfix with context %}

{% set config = salt['pillar.get']('postfix:config', {}) -%}
{% set processed_parameters = ['aliases', 'virtual'] -%}
{% macro set_parameter(parameter, default=None) -%}
{% set value = config.get(parameter, default) -%}
{% if value is not none -%}
  {%- if value is number or value is string %}
{{ parameter }} = {{ value }}
  {%- elif value is iterable %}
{{ parameter }} =
    {%- for v in value %}
       {{ v }},
    {%- endfor %}
  {%- endif %}
{%- do processed_parameters.append(parameter) -%}
{% endif -%}
{% endmacro -%}
# Managed by config management
# See /usr/share/postfix/main.cf.dist for a commented, more complete version


# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

{{ set_parameter('smtpd_banner', '$myhostname ESMTP $mail_name') }}
{{ set_parameter('biff', 'no') }}
{{ set_parameter('compatibility_level', '2') }}

# appending .domain is the MUA's job.
{{ set_parameter('append_dot_mydomain', 'no') }}

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

{{ set_parameter('readme_directory', 'no') }}

# TLS parameters
{{ set_parameter('smtpd_tls_cert_file', '/etc/ssl/certs/ssl-cert-snakeoil.pem') }}
{{ set_parameter('smtpd_tls_key_file', '/etc/ssl/private/ssl-cert-snakeoil.key') }}
{{ set_parameter('smtpd_use_tls', 'yes') }}
{{ set_parameter('smtpd_tls_session_cache_database', 'btree:${data_directory}/smtpd_scache') }}
{{ set_parameter('smtp_tls_session_cache_database', 'btree:${data_directory}/smtp_scache') }}

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

{{ set_parameter('myhostname', grains['fqdn']) }}
{{ set_parameter('alias_maps', 'hash:' ~ postfix.aliases_file) }}
{{ set_parameter('alias_database', 'hash:' ~ postfix.aliases_file) }}
{{ set_parameter('mydestination', [grains['fqdn'], 'localhost', 'localhost.localdomain', grains['domain']]) }}
{{ set_parameter('relayhost', '') }}
{{ set_parameter('mynetworks', ['127.0.0.0/8', '[::ffff:127.0.0.0]/104', '[::1]/128']) }}
{{ set_parameter('mailbox_size_limit', '0') }}
{{ set_parameter('recipient_delimiter', '+') }}
{{ set_parameter('inet_interfaces', 'all') }}
{{ set_parameter('message_size_limit', '41943040') }}

{% set relay_restrictions = ['permit_mynetworks', 'permit_sasl_authenticated', 'defer_unauth_destination'] %}
{% set policyd_spf = salt['pillar.get']('postfix:policyd-spf', {}) %}
{% if policyd_spf.get('enabled', False) %}
{% set relay_restrictions = relay_restrictions + ['check_policy_server unix:private/policyd-spf'] %}
policy-spf_time_limit = {{ policyd_spf.get('time_limit', '3600s') }}
{% endif %}
{{ set_parameter('smtpd_relay_restrictions', relay_restrictions) }}

{% set recipient_restrictions = ['permit_mynetworks', 'permit_sasl_authenticated', 'reject_unauth_destination'] %}
{% set postgrey_config = salt['pillar.get']('postfix:postgrey', {}) %}
{% if postgrey_config.get('enabled', False) %}
{% set recipient_restrictions = recipient_restrictions + ['check_policy_service ' ~ postgrey_config.get('location', 'inet:127.0.0.1:10030')] %}
{% endif %}
{{ set_parameter('smtpd_recipient_restrictions', recipient_restrictions) }}

{% if 'virtual' in pillar.get('postfix','') %}
virtual_alias_maps = hash:/etc/postfix/virtual
{% endif %}

{# Accept arbitrary parameters -#}
{% for parameter in config -%}
{% if parameter not in processed_parameters -%}
{{ set_parameter(parameter) }}
{% endif -%}
{% endfor -%}