Ajout des relais SMTP pour que tous les systèmes puissent communiquer

roles/smtprelay/templates/main.cf.j2

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+smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
+biff = no
+
+# appending .domain is the MUA's job.
+append_dot_mydomain = no
+myorigin = mateu.be
+
+# Uncomment the next line to generate "delayed mail" warnings
+#delay_warning_time = 4h
+
+alias_maps = hash:/etc/aliases
+alias_database = hash:/etc/aliases
+mydestination = $myhostname, localhost.$mydomain, localhost
+
+## sending email
+smtp_sasl_auth_enable = yes
+smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
+smtp_sasl_security_options = noanonymous
+smtp_use_tls = yes
+relayhost = [smtp.libertus.eu]:587
+
+## only accepts local relay
+mynetworks = 127.0.0.0/8, 172.17.0.1/16
+inet_interfaces = loopback-only
+
+smtpd_relay_restrictions = permit_mynetworks,defer_unauth_destination,reject

roles/smtprelay/templates/sasl_passwd.j2

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+[smtp.libertus.eu]:587 smtp.relay:{{ smtp_relay_pass }}