使用PHP发送多部分/备用电子邮件时出现问题

这是构建/发送电子邮件的脚本：

$boundary = md5(date('U'));

$to = $email;
$subject = "My Subject";

$headers = "From: myaddress@mydomain.com" . "\r\n".
           "X-Mailer: PHP/".PHPversion() ."\r\n".
           "MIME-Version: 1.0" . "\r\n".
           "Content-Type: multipart/alternative; boundary=--$boundary". "\r\n".
           "Content-Transfer-Encoding: 7bit". "\r\n";

$text = "You really ought remember the birthdays";     
$html = '<html>
    <head>
      <title>Birthday Reminders for August</title>
    </head>
    <body>
      <p>Here are the birthdays upcoming in August!</p>
      <table>
        <tr>
          <th>Person</th><th>Day</th><th>Month</th><th>Year</th>
        </tr>
        <tr>
          <td>Joe</td><td>3rd</td><td>August</td><td>1970</td>
        </tr>
        <tr>
          <td>Sally</td><td>17th</td><td>August</td><td>1973</td>
        </tr>
      </table>
    </body>
    </html>
    ';

$message = "Multipart Message coming up" . "\r\n\r\n".
       "--".$boundary.
       "Content-Type: text/plain; charset=\"iso-8859-1\"" .
       "Content-Transfer-Encoding: 7bit".
       $text. 
       "--".$boundary. 
       "Content-Type: text/html; charset=\"iso-8859-1\"". 
       "Content-Transfer-Encoding: 7bit". 
       $html.
       "--".$boundary."--";



mail("toAddress@example.com",$subject,$message,$headers);

它发送消息就好了,我的收件人收到了它,但是他们用text / plain而不是multipart / alternative来获取整个内容.查看收到的消息的来源给出了这一点(删除了许多内容)：

--- snip ---
Date: Wed,25 Mar 2009 17:37:36 -0600 (MDT)
Message-Id: <200903252337.n2PNbaw2019541@www.xxxxxxx.com>
To: trevor@saturdayplace.com
Subject: My Subject
From: me@mydomain.com
X-Mailer: PHP/4.3.9
MIME-Version: 1.0
Content-Type: text/plain;
boundary="--66131caf569f63b24f43d529d8973560"
Content-Transfer-Encoding: 7bit
X-OriginalArrivalTime: 25 Mar 2009 23:38:30.0531 (UTC) FILETIME=[CDC4E530:01C9ADA2]
X-TM-AS-Product-Ver: SMEX-8.0.0.1181-5.600.1016-16540.005
X-TM-AS-Result: No--4.921300-8.000000-31
X-TM-AS-User-Approved-Sender: No
X-TM-AS-User-Blocked-Sender: No


Multipart Message coming up

--66131caf569f63b24f43d529d8973560
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

You really ought remember the birthdays

--66131caf569f63b24f43d529d8973560
Content-Type: text/html; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

<html>
    <head>
      <title>Birthday Reminders for August</title>
    </head>
    <body>
      <p>Here are the birthdays upcoming in August!</p>
      <table>
        <tr>
          <th>Person</th><th>Day</th><th>Month</th><th>Year</th>
        </tr>
        <tr>
          <td>Joe</td><td>3rd</td><td>August</td><td>1970</td>
        </tr>
        <tr>
          <td>Sally</td><td>17th</td><td>August</td><td>1973</td>
        </tr>
      </table>
    </body>
    </html>


--66131caf569f63b24f43d529d8973560--

看起来内容类型标题在从multipart / alternative到text / plain的过程中发生了变化.我不是系统管理员,所以如果这是一个sendmail问题,我就在我脑海中.有什么建议？

这条线

"Content-Type: multipart/alternative; boundary=--$boundary". "\r\n".

应该

"Content-Type: multipart/alternative; boundary=$boundary". "\r\n".

您不在标题中包含短划线.

使用PHP发送多部分/备用电子邮件时出现问题

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