YII2-邮件始终保存为文件，但不发送，尽管useFileTransport=false

我试图从Yii2生产站点发送邮件，但邮件总是到达runtime/mail文件夹

这是控制器中的操作：

 public function actionTestmail()
 {
   Yii::$app
        ->mailer
        ->compose(['html' => 'courriel-test-html']          
        )
        ->setFrom("user@domain.fr") //->setFrom([Yii::$app->params['supportEmail'] => Yii::$app->name . ' robot'])
        ->setTo('me@mydomain.com')
        ->setSubject('Email for test purpose')
        ->send();
     return $this->render('index');
 }

index.php

// comment out the following two lines when deployed to production
//defined('YII_DEBUG') or define('YII_DEBUG', true);
//defined('YII_ENV') or define('YII_ENV', 'dev');

require(__DIR__ . '/../vendor/autoload.php');
require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');

$config = require(__DIR__ . '/../config/web.php');

(new yii\web\Application($config))->run();

    'Smtpmail'=>array(
                'class'=>'application.extensions.smtpmail.PHPMailer',
                'useFileTransport' => false,
                'Host'=>"fox.o2switch.net",
                'Username'=>'user@domain.fr',//a valid account 
                'Password'=>'******',//the actual password for the account above
                'Mailer'=>'smtp',
                'Port'=>587,
                'SMTPAuth'=>true, 
                'SMTPSecure' => 'tls',
            ),

or 

      'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'useFileTransport' => false,
            'transport' => [
                'class' => 'Swift_SmtpTransport',
                'host' => 'fox.o2switch.net',
                'username' => 'user@domain.fr',
                'password' => '*******',
                'port' => '25',
               // 'encryption' => 'tls',
            ],
        ],

config/web.php

// comment out the following two lines when deployed to production
//defined('YII_DEBUG') or define('YII_DEBUG', true);
//defined('YII_ENV') or define('YII_ENV', 'dev');

require(__DIR__ . '/../vendor/autoload.php');
require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');

$config = require(__DIR__ . '/../config/web.php');

(new yii\web\Application($config))->run();

    'Smtpmail'=>array(
                'class'=>'application.extensions.smtpmail.PHPMailer',
                'useFileTransport' => false,
                'Host'=>"fox.o2switch.net",
                'Username'=>'user@domain.fr',//a valid account 
                'Password'=>'******',//the actual password for the account above
                'Mailer'=>'smtp',
                'Port'=>587,
                'SMTPAuth'=>true, 
                'SMTPSecure' => 'tls',
            ),

or 

      'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            'useFileTransport' => false,
            'transport' => [
                'class' => 'Swift_SmtpTransport',
                'host' => 'fox.o2switch.net',
                'username' => 'user@domain.fr',
                'password' => '*******',
                'port' => '25',
               // 'encryption' => 'tls',
            ],
        ],

---

在这两种情况下，结果是相同的，即运行时文件/mail，但实际上没有发送邮件。有什么问题吗？

我通过如下更改actionTestmail（）函数解决了这个问题

$mailer = Yii::$app->mailer;
$mailer->useFileTransport = false;
$mailer->compose…

似乎这条线

'useFileTransport' => false,

---

在配置中是无用的

我通过如下更改actionTestmail（）函数解决了这个问题

$mailer = Yii::$app->mailer;
$mailer->useFileTransport = false;
$mailer->compose…

似乎这条线

'useFileTransport' => false,

在配置中是没有用的

我终于弄明白了 我在配置中有一个副本，上面写着“useFileTransport=>true，”

我在配置中有一个重复项，它声明“useFileTransport=>true，”