# 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

smtpd_banner = $myhostname ESMTP $mail_name
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

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

readme_directory = no

# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2

# TLS parameters
smtpd_tls_cert_file = {{ postfix.ssl.cert }}
smtpd_tls_key_file = {{ postfix.ssl.key }}
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_tls_security_level = {{ postfix.ssl.incoming_security_level }}
smtpd_tls_auth_only = yes
smtp_tls_security_level = {{ postfix.ssl.outgoing_security_level }}

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

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination

myhostname = {{ inventory_hostname }}
mydomain = {{ postfix.mydomain|d(ansible_domain) }}
myorigin = $mydomain
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 {{ postfix.mynetworks|join(' ') }}
mydestination = {{ inventory_hostname_short }} {{ inventory_hostname }} localhost {{ postfix.mydestination|join(' ') }}

alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases

relayhost = {{ postfix.relayhost }}
relay_domains = {{ postfix.relay_domains|join(', ') }}
relay_transport = {{ postfix.relay_transport }}
sender_dependent_relayhost_maps = {{ postfix.sender_dependent_relayhost_maps }}

mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all

message_size_limit = {{ postfix.message_size_limit }}

{% if "virtual_transport" in postfix and postfix.virtual_transport == "dovecot" %}
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
smtpd_sender_restrictions = reject_unknown_sender_domain
#smtpd_client_restrictions = permit_mynetworks,reject

dovecot_destination_recipient_limit = 1
virtual_transport = dovecot
{% endif %}

# Virtual maps
virtual_alias_maps = {{ postfix.virtual_alias_maps }}
virtual_mailbox_domains = {{ postfix.virtual_mailbox_domains|join(' ') }}

{% if postfix.ldap.enable %}
# LDAP config
## Virtual maps
# virtual_mailbox_maps = ldap:/etc/postfix/ldap/virtual_mailboxes.cf
# virtual_mailbox_base = /home/vmail
# virtual_uid_maps = ldap:/etc/postfix/ldap/virtual_uid.cf # TODO: Do we need this?
# virtual_gid_maps = ldap:/etc/postfix/ldap/virtual_gid.cf # TODO: Do we need this?

# virtual_uid_maps = static:{{ vmail_user.uid }}
# virtual_gid_maps = static:{{ vmail_user.group }}

## Transport maps
### None so far

# TLS
# TODO: This is already enabled when using dovecot as transport
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes

# Restrictions
smtpd_helo_required = yes
strict_rfc821_envelopes = yes
disable_vrfy_command = yes
smtpd_delay_reject = yes

smtpd_helo_restrictions = permit_mynetworks,
                          permit_sasl_authenticated,
                          reject_invalid_hostname,
                          reject_invalid_helo_hostname,
                          reject_non_fqdn_helo_hostname

# TODO: This is already enabled when using dovecot as transport
smtpd_sender_restrictions = reject_non_fqdn_sender,
                            reject_unknown_sender_domain,
                            permit_mynetworks,
                            permit_sasl_authenticated

# TODO: This is already enabled when using dovecot as transport
smtpd_recipient_restrictions =  permit_mynetworks,
                                permit_sasl_authenticated,
                                reject_unlisted_sender,
                                reject_unlisted_recipient,
                                reject_unknown_sender_domain,
                                reject_unknown_recipient_domain,
                                reject_invalid_hostname,
                                reject_unauth_destination,
                                reject_non_fqdn_hostname,
                                reject_non_fqdn_sender,
                                reject_non_fqdn_recipient,
                                permit

smtpd_client_restrictions = permit_mynetworks,
                            permit_sasl_authenticated,
                            permit

{% endif %}

# opendkim

{% if postfix.enable_opendkim %}

milter_protocol = 6
milter_default_action = accept

smtpd_milters = inet:localhost:8891
non_smtpd_milters = inet:localhost:8891

{% endif %}