CodeIginter 3 电子邮件库$to字段不起作用，但$cc可以 - CodeIginter 3 Email Library $to field doesn't work, but $cc does

CodeIginter 3 Email Library $to field doesn't work, but $cc does

我有一个简单的函数，可以通过电子邮件发送提醒消息。我正在使用CodeIginter 3，它是电子邮件库。当我从测试机器运行控制器时，它工作正常，但是当我从我的网络服务器运行它时，它只会将电子邮件发送到$cc或$bcc字段中列出的那些，任何列为收件人（$to）的人都不会收到任何电子邮件。

$this->load->library('email');
    $lateE = $this->Equipment_model->get_late_equipment_report();
    foreach($lateE as $le){
        $this->email->from('no-reply@server.com', 'Reminder');
        $this->email->to($le->email,'test1@server.com','test2@yahoo.com'); 
        $this->email->cc('test3@gamil.com');  
        $this->email->bcc('test4@yahoo.com'); 
        $this->email->subject('Late Reminder');
        $mail = "This message is a reminder that you have checked out Equipment 'n'r'n'r";
        $mail .=" Name: ". $le->first ." ". $le->last ."'n'r";
        $mail .=" Reminder: ". $le->pack ."'n'r";
        $mail .=" Due back on: ". $le->returndate ."'n'r'n'r"; 
        $this->email->message($mail);   
        //echo $this->email->print_debugger();
        $this->email->send();
    }

to 字段确实有效。但不具有多个参数：

电子邮件.php （~600）：

/**
 * Set Recipients
 *
 * @param   string
 * @return  CI_Email
 */
public function to($to)

它期待一个字符串。