與SMTP中繼電子郵件發送附件

Question

我現在有一臺服務器中繼電子郵件到一個主郵件服務器，但是當我嘗試發送帶有附件的東西，它出現爲：

Content-type:text/plain; charset=UTF-8 
Content-Transfer-Encoding: 7bit 
Email message 
Content-Type: application/octet-stream; name="test.pdf" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment; filename="test.pdf" 

反正是有解決這個問題？

Answer 1

試試這個

<?php 
//define the receiver of the email 
$to = 'youraddress@example.com'; 
//define the subject of the email 
$subject = 'Test email with attachment'; 
//create a boundary string. It must be unique 
//so we use the MD5 algorithm to generate a random hash 
$random_hash = md5(date('r', time())); 
//define the headers we want passed. Note that they are separated with \r\n 
$headers = "From: webmaster@example.com\r\nReply-To: webmaster@example.com"; 
//add boundary string and mime type specification 
$headers .= "\r\nContent-Type: multipart/mixed; boundary=\"PHP-mixed-".$random_hash."\""; 
//read the atachment file contents into a string, 
//encode it with MIME base64, 
//and split it into smaller chunks 
$attachment = chunk_split(base64_encode(file_get_contents('attachment.zip'))); 
//define the body of the message. 
ob_start(); //Turn on output buffering 
?> 
--PHP-mixed-<?php echo $random_hash; ?> 
Content-Type: multipart/alternative; boundary="PHP-alt-<?php echo $random_hash; ?>" 

--PHP-alt-<?php echo $random_hash; ?> 
Content-Type: text/plain; charset="iso-8859-1" 
Content-Transfer-Encoding: 7bit 

Hello World!!! 
This is simple text email message. 

--PHP-alt-<?php echo $random_hash; ?> 
Content-Type: text/html; charset="iso-8859-1" 
Content-Transfer-Encoding: 7bit 

<h2>Hello World!</h2> 
<p>This is something with <b>HTML</b> formatting.</p> 

--PHP-alt-<?php echo $random_hash; ?>-- 

--PHP-mixed-<?php echo $random_hash; ?> 
Content-Type: application/zip; name="attachment.zip" 
Content-Transfer-Encoding: base64 
Content-Disposition: attachment 

<?php echo $attachment; ?> 
--PHP-mixed-<?php echo $random_hash; ?>-- 

<?php 
//copy current buffer contents into $message variable and delete current output buffer 
$message = ob_get_clean(); 
//send the email 
$mail_sent = @mail($to, $subject, $message, $headers); 
//if the message is sent successfully print "Mail sent". Otherwise print "Mail failed" 
echo $mail_sent ? "Mail sent" : "Mail failed"; 
?> 

Answer 2

滾滾PHP自己的MIME編碼，lemirage建議，將工作。但是使用phpmailer可能會更簡單。 phpmailer易於使用附件發送消息，並且易於安裝 - 只需將幾個PHP文件複製到您的服務器即可。見https://github.com/PHPMailer/PHPMailer