PHPMailer is giving me the following error - php

Question

I am using PHPMailer, and when I tried to run the following PHP I got this error message:
Message could not be sent.Mailer Error: SMTP Error: data not accepted.SMTP server error: DATA END command failed Detail: 5.7.60 SMTP; Client does not have permissions to send as this sender SMTP code: 550
php code:
<?php
require 'phpmailer/PHPMailerAutoload.php';
$mail = new PHPMailer;
//$mail->SMTPDebug = 3; // Enable verbose debug output
$mail->isSMTP(); // Set mailer to use SMTP
$mail->Host = 'outlook.office365.com'; // Specify main and backup SMTP servers
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = 'info#domain.com'; // SMTP username
$mail->Password = '*password*'; // SMTP password
$mail->SMTPSecure = 'tls'; // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587; // TCP port to connect to
$mail->setFrom('from#example.com', 'Mailer');
$mail->addAddress('joe#example.net', 'Joe User'); // Add a recipient
$mail->addAddress('ellen#example.com'); // Name is optional
$mail->addReplyTo('info#example.com', 'Information');
// $mail->addCC('cc#example.com');
// $mail->addBCC('bcc#example.com');
$mail->isHTML(true); // Set email format to HTML
$mail->Subject = 'Here is the subject';
$mail->Body = 'This is the HTML message body <b>in bold!</b>';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';
if(!$mail->send()) {
echo 'Message could not be sent.';
echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
echo 'Message has been sent';
}
?>

Answer 1

I'm not sure it could be much clearer when it says "Client does not have permissions to send as this sender". It means exactly what it says.
You are sending using a from address (which by default is also used as the envelope sender; see the Sender property) of from#example.com, and outlook is not willing to let you use that address. You will probably be limited to using the address that is also your user name. Gmail has a similar limitation.