PHP ส่งเมลที่สร้างจากฟอร์ม Dream อ่านภาษาไทยใน Outlook 2007 ไม่ได้

 <form id="form1" name="form1" method="post" action="sendmail.php">
          <p>&nbsp;</p>
          <table width="90%" border="0" align="center" cellspacing="0">
            <tr>
              <td bgcolor="#66FFFF">ชื่อ : </td>
              <td bgcolor="#66FFFF"><input name="name" type="text" id="name" size="40" /></td>
              <td bgcolor="#66FFFF">**</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF">ที่อยู่ :</td>
              <td bgcolor="#66FFFF"><input name="address" type="text" id="address" size="40" /></td>
              <td bgcolor="#66FFFF">**</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF">เบอร์ติดต่อ :</td>
              <td bgcolor="#66FFFF"><input name="tel" type="text" id="tel" size="40" /></td>
              <td bgcolor="#66FFFF"> **</td>
              <td align="right" bgcolor="#66FFFF">Fax:</td>
              <td bgcolor="#66FFFF"><input name="fax" type="text" id="fax" size="40" /></td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF">E-mail :</td>
              <td bgcolor="#66FFFF"><input name="mail" type="text" id="mail" size="40" /></td>
              <td bgcolor="#66FFFF">**</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td colspan="2" bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF"><span class="style4">มีความสนใจ Piston&nbsp; รุ่น :</span></td>
              <td bgcolor="#66FFFF"><input name="piston" type="text" id="piston" size="40" /></td>
              <td bgcolor="#66FFFF">**</td>
              <td align="right" bgcolor="#66FFFF">แรงม้า :</td>
              <td bgcolor="#66FFFF"><input name="pistonat" type="text" id="pistonat" size="40" /></td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF"><span class="style4">มีความสนใจรุ่น Chiller รุ่น : </span></td>
              <td bgcolor="#66FFFF"><input name="chiller" type="text" id="chiller" size="40" /></td>
              <td bgcolor="#66FFFF">**</td>
              <td align="right" bgcolor="#66FFFF">แรงม้า :</td>
              <td bgcolor="#66FFFF"><input name="chillerat" type="text" id="chillerat" size="40" /></td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF"><span class="style4">มีความสนใจ Screw รุ่น : </span></td>
              <td bgcolor="#66FFFF"><input name="screw" type="text" id="screw" size="40" /></td>
              <td bgcolor="#66FFFF">**</td>
              <td align="right" bgcolor="#66FFFF">แรงม้า :</td>
              <td bgcolor="#66FFFF"><input name="screw" type="text" id="screw" size="40" /></td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td bgcolor="#66FFFF"><span class="style4">มีความสนใจสินค้าอื่น : </span></td>
              <td colspan="4" bgcolor="#66FFFF"><input name="other" type="text" id="other" size="80" /></td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td valign="top" bgcolor="#66FFFF">รายละเอียดเพิ่มเติม</td>
              <td colspan="4" bgcolor="#66FFFF"><textarea name="detail" cols="77" rows="6" id="detail"></textarea></td>
              <td bgcolor="#66FFFF">&nbsp;</td>
            </tr>
            <tr>
              <td width="25%" bgcolor="#66FFFF">&nbsp;</td>
              <td width="27%" bgcolor="#66FFFF"><input type="submit" name="Submit" value="Submit" /></td>
              <td width="5%" bgcolor="#66FFFF">&nbsp;</td>
              <td width="8%" bgcolor="#66FFFF">&nbsp;</td>
              <td width="32%" bgcolor="#66FFFF">&nbsp;</td>
              <td width="3%" bgcolor="#66FFFF">&nbsp;</td>
            </tr>
          </table>

<?php

$recipient = "[email protected]";

$subject = "website";


$message = "

Contact details
---------------------------------------------------
Name: $_POST[name] 
Address : $_POST[address]
E-mail : $_POST[mail]
Tel : $_POST[tel]   Fax: $_POST[fax]
Piston&nbsp;model : $_POST[piston]      at : $_POST[pistonat] hp
Chiller mode : $_POST[chiller]      at : $_POST[chillerat] hp
Screw model : $_POST[screw]      at : $_POST[screwat] hp
Other product model : $_other
---------------------------------------------------
Additional Information
---------------------------------------------------
$_POST[detail]
---------------------------------------------------
";

$headers = "From: $_POST[name] < $_POST[mail]>\n";
$headers .= "Return-Path: <[email protected]>\n";   # แจ้งไปยังอีเมลล์ดังกล่าวเมื่อพบ Error

mail( $recipient, $subject, $message, $headers ) or print "ไม่สามารถส่งจดหมายได้";
?>