Why is nodemailer not sending copies of emails?

Question

Node.js

I explicitly specify the cc parameter in the header and envelope

let RFC822Message = await SMTPFacade.buildMail({
            from: process.env.EMAIL,
            sender: process.env.EMAIL,
            to: recipients,
            cc: recipientsCC,
            subject: subject,
            html: html,
            inReplyTo: messageId,
            references: references
        });

        let sendingResult = await SMTPFacade.send(SMTPConnection, {
            from: process.env.EMAIL,
            to: recipients,
            cc: recipientsCC,
        }, RFC822Message);

the letter comes only to and there is ss in the headers of the letter, but letters are not sent to them, maybe nodemailer is not able to do this?

Answer 1

Most likely, the SMTP server on which you put these letters does not know how to do it