ansible-edda/plays/system/roles/mail/templates/postfix/main.cf.j2

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# 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.
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myorigin = /etc/mailname
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smtpd_banner = $myhostname ESMTP
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biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2
# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_tls_security_level=may
smtp_tls_CApath=/etc/ssl/certs
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smtp_tls_security_level=encrypt
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smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
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smtp_tls_wrappermode = yes
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smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
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myhostname = {{ ansible_hostname }}.{{ system_mail_domain }}
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alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
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mydestination = $myhostname, {{ ansible_hostname }}, localhost
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relayhost = [{{ system_mail_smtp_server }}]:{{ system_mail_smtp_port }}
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mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
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inet_interfaces = loopback-only
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inet_protocols = all
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# SASL parameters
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd