#On active l'authentification SASL
smtp_sasl_auth_enable=yes
#Les méthodes pour l'authenfication anonyme
smtp_sasl_security_options=noanonymous
#Le chemin de sasl_passwd
smtp_sasl_password_maps=hash:/etc/postfix/sasl/sasl_passwd
#On active le cryptage STARTTLS
smtp_tls_security_level=encrypt
#Chemin des certificats CA
smtp_tls_CAfile=/etc/ssl/certs/ca-certificate.crt