✨: add smtp global relay

roles/global_smtp_relay/templates/main.cf.j2

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+compatibility_level = 2
+mail_owner = postfix
+myhostname = mail-relay.mateu.be
+myorigin = $myhostname
+mydestination = $myhostname, localhost.$mydomain, localhost
+unknown_local_recipient_reject_code = 550
+mynetworks = 127.0.0.0/8, [::1]/128, 82.66.135.228, 80.67.179.200
+sendmail_path = /usr/bin/sendmail
+newaliases_path = /usr/bin/newaliases
+mailq_path = /usr/bin/mailq
+mailbox_size_limit = 104857600
+message_size_limit = 104857600
+inet_protocols = ipv4
+## Référence de chiffrement TLS
+# serveur SMTP
+smtpd_tls_cert_file = /etc/x509/mail-relay.mateu.be/fullchain.cer
+smtpd_tls_key_file = /etc/x509/mail-relay.mateu.be/mail-relay.mateu.be.key
+smtpd_use_tls = yes
+smtpd_tls_auth_only = yes
+smtpd_tls_protocols = !SSLv2,!SSLv3
+smtpd_tls_loglevel = 1
+# client SMTP
+smtp_tls_CApath = /etc/ssl/certs
+smtp_tls_cert_file = /etc/x509/mail-relay.mateu.be/fullchain.cer
+smtp_tls_key_file = /etc/x509/mail-relay.mateu.be/mail-relay.mateu.be.key
+smtp_use_tls = yes
+smtp_tls_protocols = !SSLv2,!SSLv3
+smtp_tls_security_level = may
+smtp_tls_loglevel = 1