PHPMailer works where CakeEmail doesn't with the same configuration

Question

I have the following problem, as you may have imagined by the title I have a CakePHP v2.5.6 application with a contact form, and it's giving me an authentication error every time I submit it, how was my surprise, after trying a simple test using PHPMailer it works perfectly with apparently the same configuration.

CakePHP configuration (app/Config/email.php)

<?php

class EmailConfig {

public $info = array(
    'transport' => 'Smtp',
    'host' => 'smtp.foo.com',
    'port' => 25,
    'username' => 'username',
    'password' => 'password'
    );
}   

CakePHP sender code

CakeEmail::deliver('foo@foo.es', 'Subject', 'Test', 'info');  

CakePHP error report

PHPMailer test script

<?php
require './PHPMailer/PHPMailerAutoload.php';

$mail = new PHPMailer;

//$mail->SMTPDebug = 3;                               

$mail->isSMTP();                                     
$mail->Host = 'smtp.foo.com';  
$mail->SMTPAuth = true;                              
$mail->Username = 'username';               
$mail->Password = 'password';                           
$mail->Port = 25;                                   

$mail->setFrom('info@example.es', 'Mailer');
$mail->addAddress('foo@foo.es', 'Mr. foo');                  
$mail->addReplyTo('info@example.es', 'Information');

$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';
}  

So my question is, is there actually any differences between configurations, or I'm missing something? Why is PHPMailer working and CakeEmail isn't?
Thank you in advance :)

Answer 1

I found the solution which seems pretty dummy but the debug information was not completly accurate about the error cause.
The thing is missing and where PHPMailer and CakeEmail differ is in the from config field.

PHPMailer from configuration

$mail->setFrom('info@example.es', 'Mailer');  

As you may notice the CakeEmail config file lacks of that field, so just adding it the error disappears.

The final CakeEmail config file should look like:

<?php

class EmailConfig {

public $info = array(
    'transport' => 'Smtp',
    'host' => 'smtp.foo.com',
    'port' => 25,
    'username' => 'username',
    'password' => 'password',
    'from' => 'info@example.es'
    );
}   

I hope this helps someone :)