# 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 (Debian/GNU)
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=/etc/ssl/certs/ssl-cert-snakeoil.pem
#smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.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

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

myhostname = {{ inventory_hostname }}
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = {{ inventory_hostname }}, {{ inventory_hostname_short }}, localhost.localdomain, localhost
relayhost = 
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128{% for network in smtp_allow_relay_from  %} {{ network }}{% endfor %}

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

# LDAP directory look-ups for domains, mailboxes and aliases.
virtual_mailbox_domains = ldap:/etc/postfix/ldap-virtual-mailbox-domains.cf
virtual_mailbox_maps = ldap:/etc/postfix/ldap-virtual-mailbox-maps.cf
virtual_alias_maps = ldap:/etc/postfix/ldap-virtual-alias-maps.cf

# Delivery of mails via Dovecot LDA for virtual domains.
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1

# SMTP authentication configured, but disabled by default (for server-to-server
# communication). Users should connect via submission port instead to be able to
# authenticate.
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = no

# TLS configuration.
smtpd_tls_security_level = may
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/ssl/certs/{{ ansible_fqdn }}_smtp.pem
smtpd_tls_key_file = /etc/ssl/private/{{ ansible_fqdn }}_smtp.key
smtpd_tls_dh1024_param_file = /etc/ssl/private/{{ inventory_hostname }}_smtp.dh.pem
smtpd_tls_dh512_param_file = /etc/ssl/private/{{ inventory_hostname }}_smtp.dh.pem
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_security_level = may

# Allow relaying only from trusted networks. Do not relay mails for
# domains for which the mail server is not responsible.
smtpd_relay_restrictions = permit_mynetworks
  reject_unauth_destination

# Reject delivery of mails for domains for which the local server is
# not responsible, as well as any mails coming from addresses in one
# of the configured RBL's.
smtpd_recipient_restrictions = permit_mynetworks
{% for rbl in smtp_rbl %}
  reject_rbl_client {{ rbl }}
{% endfor %}

smtpd_milters = unix:/var/run/clamav/clamav-milter.ctl
non_smtpd_milters = unix:/var/run/clamav/clamav-milter.ctl

# Deliver undeliverable bounces to domain's postmaster. Helps with application
# misconfigurations.
notify_classes = resource, software, 2bounce

# Fall-back to using native lookups (/etc/hosts etc) if DNS lookup fails. Useful
# for local overrides of mail servers.
smtp_host_lookup = dns, native

# Explicitly set maximum allowed mail size that should be accepted.
message_size_limit = {{ mail_message_size_limit }}