Laravel 5.4 unable to set email from option - php

Question

I am using global from option in config/mail.php as mentioned in the documentation to use the same from address for all of my emails being sent. This works as expected. However, when I attempt to explicitly set a from address within the build function of a Mailable class, the global address is still used. Is there something I could be missing, all of this seems to come straight from the documentation for 5.4. My Mailable class is as follows (there is definitely a value in the $this->email property as it is displayed when echoed):
namespace App\Mail;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;
use Illuminate\Contracts\Queue\ShouldQueue;
class ContactMessage extends Mailable
{
use Queueable, SerializesModels;
public $user_email;
public $user_message;
/**
* Create a new message instance.
*
* #return void
*/
public function __construct($user_email, $user_message)
{
$this->user_email = $user_email;
$this->user_message = $user_message;
}
/**
* Build the message.
*
* #return $this
*/
public function build()
{
// echo '<pre>';
// echo var_export($this->user_email, true);
// echo '<br/><br/>';
// echo var_export($this->message, true);
// die;
return $this->from($this->user_email)
->subject('Contact Message')
->view('mail.contactMessage');
}
}

Answer 1

Your code is correct. Thing is, setting the From header is a privileged operation in most MTA.
If you use sendmail, postfix, or other similars on a local machine you can usually set the From. However, when using an authenticated account at a third party, you usually cannot.
To change the From header with a third party, you need to either use an authenticated account that matches your From (eg with GMail), or configure the allowed From in your account (eg at AWS SES).