diff --git a/roles/mail_server/templates/main.cf.j2 b/roles/mail_server/templates/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.
+#myorigin = /etc/mailname
+
+smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
+biff = no
+
+# appending .domain is the MUA's job.
+append_dot_mydomain = no
+
+# Uncomment the next line to generate "delayed mail" warnings
+#delay_warning_time = 4h
+
+readme_directory = no
+
+# TLS parameters
+smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
+smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
+smtpd_use_tls=yes
+smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
+smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
+
+# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
+# information on enabling SSL in the smtp client.
+
+myhostname = mail
+alias_maps = hash:/etc/aliases
+alias_database = hash:/etc/aliases
+myorigin = /etc/mailname
+mydestination = mail.example.com, mail, localhost.localdomain, localhost
+relayhost = 
+mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
+mailbox_command = procmail -a "$EXTENSION"
+mailbox_size_limit = 0
+recipient_delimiter = +
+inet_interfaces = 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 for virtual domains.
+virtual_transport=dovecot
+dovecot_destination_recipient_limit=1
+
+# SMTP authentication.
+smtpd_sasl_type=dovecot
+smtpd_sasl_path=private/auth
+smtpd_sasl_auth_enable=yes
+smtpd_tls_security_level=may
+smtpd_tls_auth_only=yes
+smtpd_tls_cert_file={{ smtp_tls_certificate }}
+smtpd_tls_key_file={{ smtp_tls_key }}
+smtpd_recipient_restrictions=" \
+  permit_mynetworks \
+  permit_sasl_authenticated \
+  reject_unauth_destination"