cakephp smtpのポートの変更の仕方

    'EmailTransport' => [
        'default' => [
            'className' => MailTransport::class,
            /*
             * The following keys are used in SMTP transports:
             */
            'host' => 'localhost',
            'port' => 25,       // 587に変更
            'timeout' => 30,
            'username' => null,
            'password' => null,
            'client' => null,
            'tls' => null,
            'url' => env('EMAIL_TRANSPORT_DEFAULT_URL', null),
        ],
    ],