How to set DSN (Delivery Status Notification) for PHPMailer?

I'm trying to find out how to set DSN when using PHPMailer. I know at the SMTP Protocol level, the DSN is specified after RCPT TO, e.g. RCPT TO: NOTIFY=SUCCESS,FAILURE ORCPT=rfc822;recipientemail@gmail.com

Also, I will like to direct the DSN to other than the sender address if that is possible. Appreciate any pointers, thanks.

I discovered that PHPMailer doesn't support DSN, so I had to amend class.smtp.php itself.

Original Code:

fputs($this->smtp_conn,"RCPT TO:<" . $to . ">" . $this->CRLF);

Change to:

 fputs($this->smtp_conn,"RCPT TO:<" . $to . "> NOTIFY=SUCCESS,FAILURE ORCPT=rfc822;" . $to ."" . $this->CRLF);

As for directing DSN to other than sender address, this can be achieved by defining:

 $mail->Sender = "bounced@email.com";

I just test,it work for me, modify class.smtp.php

Original Code:

public function recipient($toaddr)
{
    return $this->sendCommand(
        'RCPT TO',
        'RCPT TO:<' . $toaddr . '>',
        array(250, 251)
    );
}

for example, Change to:

public function recipient($toaddr)
{
    return $this->sendCommand(
        'RCPT TO',
        'RCPT TO:<' . $toaddr . '> NOTIFY=SUCCESS,FAILURE ORCPT=rfc822;',
        array(250, 251)
    );
}

How would this be done in the latest version of phpmailer where there is no fputs($this->smtp_conn,"RCPT TO:<" . $to . "> etc. line within the smtp file anywhere that I can see?

Closest to it, that I can see is the only place RCPT TO is mentioned.

public function recipient($toaddr)
{
    return $this->sendCommand(
        'RCPT TO',
        'RCPT TO:<' . $toaddr . '>',
        array(250, 251)
    );
}

来源：https://stackoverflow.com/questions/10384821/how-to-set-dsn-delivery-status-notification-for-phpmailer

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php

smtp

phpmailer