'Send email with Nodemailer and Office365 mail.protection.outlook.com link (without Auth)

can we send Emails using Nodemailer and Office365 without Auth?

package.json

"nodemailer": "^6.4.4",
"nodemailer-smtp-transport": "^2.7.4",

If we take a look on the Nodemailer source code (https://github.com/nodemailer/nodemailer/blob/master/lib/smtp-transport/index.js#L56) it should work

I am using Using {xxxxxxxxx}.mail.protection.outlook.com as my connector. It guy has connected connector with Firebase IP address.

I have already tried with:

const mailTransport = nodemailer.createTransport(
        smtpTransport({
            host: 'xxxxxxxxxxx.mail.protection.outlook.com',
            port: 587,
            secureConnection: false,
            tls: {
                ciphers:'SSLv3',
                rejectUnauthorized: false
            },
        })
    );

But I am getting an error "530 5.7.57 Client not authenticated to send mail" -> I am using Firebase.

Thx

node.jsfirebaseoffice365nodemailer


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