Mailer Function cant work

Hi,

Yii::import(‘application.vendors.Mailer’);

    $mailer = new Mailer;


    $mailer->send(array(


        'from'     =>Yii::app()->setting->mail_send_from,


        'from_text'=>Yii::app()->setting->mail_send_from_text,


        'to'       =>Yii::app()->setting->mail,


        'subject'  =>'Japon: New Bid Made',


        'body'     =>$this->renderPartial(


            'application.views.mail.adminNotifyUserBid',


            array('domain'=>Yii::app()->request->serverName, 'model'=>$model),


            true


        ),


    ));

Whats mistake in my coding sending mailer function cant send mail?Having View page and also the application

Vendor Mailer function its working good in my localhost but cant work in server why?

Php Mailer Function is working Good but Yii mailer function cant work in xserver

Why?