添付ファイル付きのPHPメールをGoDaddyサーバーに送信できますか？

Question

添付ファイル付きのメールをGoDaddyサーバー経由で送信しています。メールはGmailアカウントに送信されたときに正常に動作しますが、Outlookではメールテキストはまったく表示されません。添付ファイルはそこにありますが、テキストはありません。

私のhostgatorサーバー上で、問題なく動作します。

誰でも正しい方向に向けることができますか？

<?php 
    function mail_attachment($to, $subject, $message, $from, $file) { 
    // $file should include path and filename 
    $filename = basename($file); 
    $file_size = filesize($file); 
    $content = chunk_split(base64_encode(file_get_contents($file))); 
    $uid = md5(uniqid(time())); 
    $header = "From: ".$from."\r\n" 
     ."MIME-Version: 1.0\r\n" 
     ."Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n" 
     ."This is a multi-part message in MIME format.\r\n" 
     ."--".$uid."\r\n" 
     ."Content-type:text/plain; charset=iso-8859-1\r\n" 
     ."Content-Transfer-Encoding: 7bit\r\n\r\n" 
     .$message."\r\n\r\n" 
     ."--".$uid."\r\n" 
     ."Content-Type: application/octet-stream; name=\"".$filename."\"\r\n" 
     ."Content-Transfer-Encoding: base64\r\n" 
     ."Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n" 
     .$content."\r\n\r\n" 
     ."--".$uid."--"; 
    return mail($to, $subject, "", $header); 
} 

//Settings 
$upload_folder = './data/'; //<-- this folder must be writeable by the script 
$your_email = 'xxx@gmail.com, xxx@outlookclient.com'; 
$errors =''; 

if(isset($_POST['submit'])) 
{ 
    ///------------Do Validations------------- 
if (isset($_FILES['uploadFile'])) 
{ 
} 

//send the email 
if(empty($errors)) 
{ 
    //copy the temp. uploaded file to uploads folder 
    $path_of_uploaded_file = $upload_folder . $name_of_uploaded_file; 
    $tmp_path = $_FILES["uploadFile"]["tmp_name"]; 

    if(is_uploaded_file($tmp_path)) 
    { 
     if(!copy($tmp_path,$path_of_uploaded_file)) 
     { 
      $errors .= '\n error while copying the uploaded file'; 
     } 
    } 

    $user_message = "Contact Information\r\n" . 
     "=======================================\r\n" . 
     "Date: " . $_POST['dateMonth'] . "-" . $_POST['dateDay'] . $_POST['dateYear'] . "\r\n"; 

    } 

    //send the email 
    $to = $your_email; 
    $subject= trim("[SERVICE ORDER]"); 
    $from_email = "me@mydomain.com"; 

    if ($name_of_uploaded_file != "") 
    { 
     $file = "D:\\xxx\\xxx\\html\\data\\" . $name_of_uploaded_file; 
     if (mail_attachment($to, $subject, $user_message, $from_email, $file)) { 
      header("Location: thank-you.html"); 
     } else { 
      echo("<p>Message delivery failed...</p>"); 
     } 
    } else { 
     $headers = 'From: ' . $from_email . "\r\n"; 
     if (mail($to, $subject, $user_message, $headers)) { 
      header("Location: thank-you.html"); 
     } else { 
      echo("<p>Message delivery failed...</p>"); 
     } 
    } 
} 
} 
///////////////////////////Functions///////////////// 
// Function to validate against any email injection attempts 
function IsInjected($str) 
{ 
    $injections = array('(\n+)', 
      '(\r+)', 
      '(\t+)', 
      '(%0A+)', 
      '(%0D+)', 
      '(%08+)', 
      '(%09+)' 
     ); 
$inject = join('|', $injections); 
$inject = "/$inject/i"; 
if(preg_match($inject,$str)) 
    { 
    return true; 
} 
else 
    { 
    return false; 
} 
} 
?> 

Answer 1

自分でMIMEメッセージを作成しないでください。 PHPMailerまたはSwiftmailerを使用してください。彼らははるかに信頼性が高いです。