在php中使用phpmailer進入垃圾郵件的電子郵件

我正在使用phpmailer發送帶有pdf附件的電子郵件，但它發送垃圾郵件。我的電子郵件很簡單，只需要pdf附件。我試過谷歌上的所有內容，但不知道我錯過了。以下是我的代碼。在php中使用phpmailer進入垃圾郵件的電子郵件

$email_settings = ORMEmailSettings::order_by('id', 'desc')->limit(1)->first(); 
    $email_host = $email_settings->email_host; 
    $email_username = $email_settings->email_username; 
    $email_password = $email_settings->email_password; 

    require_once APPPATH . DIRECTORY_SEPARATOR . 'controllers/admin/smtp/class.phpmailer.php'; 
    if ($eventTicketId != 9999) { 
     $eventId = $this->events_model->getAttachment($eventTicketId[0]->event_id); 
     $emailSubject = $eventId[0]->title; 
    } else { 
     $emailSubject = "Here come the normal subject"; 
    } 
    $mail = new PHPMailer(); 
    $mail->IsSMTP(); 
    $mail->SMTPAuth = 'true'; 
    $mail->SMTPSecure = 'tls'; 
    $mail->SMTPKeepAlive = true; 
    $mail->Host = 'xxxx.xxmsrv.de'; 
    $mail->Port = 587; 
    $mail->IsHTML(true); 

    $mail->Username = "[email protected]marketing.com"; 
    $mail->Password = "xxxxxxxx2014*"; 
    $mail->SingleTo = true; 

    $mail->From = "[email protected]"; 
    $mail->FromName = "My Email"; 
    $mail->AddAddress('xxxxxxxx.de'); 
    if ($eventTicketId != 9999) { 
     $filename = "MPM-event" . $eventId[0]->id . "_.pdf"; 
     $filelocation = $_SERVER['DOCUMENT_ROOT'] . '/eventDocs'; 
     $fileNL = $filelocation . "/" . $filename; 
     $mail->AddAttachment($fileNL, $filename, $encoding = 'base64', $type = 'application/pdf'); 
    } 
    $mail->Subject = $emailSubject; 
    $mail->Body = '<!-- 
To change this template, choose Tools | Templates 
and open the template in the editor. 
--> 
<!DOCTYPE html> 
<html> 
<head> 
    <title></title> 
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
</head> 
<body style="margin: 0; padding: 0; font-family: Arial; font-size: 14px;  line-height: 17px;"> 
</body> 
</html>'; 

    if ($mail->send()) { 
     echo 'if'; 
     exit; 
    } else { 
     echo 'else'; 
     exit; 
    }

來源

2015-12-16 Umair Malik

'$ mail-> SMTPAuth ='true';'應該是'$ mail-> SMTPAuth = true;'你不需要設置SingleTo，因爲你只是發送到一個地址。看起來您已經將代碼基於一個過時的示例，因此請確保您正在運行最新的PHPMailer。 – Synchro