{
                "mail": {
                "DOMAIN": "#SMTP_DOMAIN",
                "HOSTNAME": "#SMTP_DOMAIN",
                "SMTP_PORT": "#SMTP_PORT",
                "RELAYNETS": "172.19.0.0/16",
                "SMTPUTF8_ENABLE": "yes",
                "ROOT_MAIL": "#SMTP_ROOT_EMAIL",
                "TZ": "#SMTP_TIMEZONE",
                "MESSAGE_SIZE_LIMIT": "52428800",
                "POSTMASTER_MAIL": "#SMTP_POSTMASTER_EMAIL"
                }
}