中国的SMTP主机问题

Question

我有关于使用codeigniter电子邮件库的smtp的问题。它与smtp.gmail.com一起工作正常但在这种情况下我必须使用vpn。我找到了其他解决方案，如smtp.exmail.qq.com，smtp.mail.yahoo.com或smtp.sina.com，但是当您发送表单在电子邮件字段中键入您的电子邮件时，它仅使用您在smtp用户中提供的电子邮件发送。请进一步查看我的代码和屏幕截图enter image description here：

         //get the form data
         $name = $this->input->post('name');
         $from_email = $this->input->post('email');
         $subject = $this->input->post('subject');
         $message = $this->input->post('message');

         //set to_email id to which you want to receive mails
         $to_email = 
         'info@sample.com';

         //configure email settings
         $config['protocol'] = 'smtp';
         $config['smtp_host'] = 'ssl://smtp.exmail.qq.com'; 
         //'ssl://smtp.googlemail.com';
         $config['smtp_port'] = '465';
         $config['smtp_user'] = 'myemail@exmail.qq.com';
         $config['smtp_pass'] = 'my password';
         $config['mailtype'] = 'html';
         $config['charset'] = 'iso-8859-1';
         $config['wordwrap'] = TRUE;
         $config['newline'] = "\r\n"; //use double quotes
         //$this->load->library('email', $config);
         $this->email->initialize($config);                        

         //send mail
         $this->email->from($from_email, $name);
         $this->email->to($to_email);
         $this->email->subject($subject);
         $this->email->message($message);