Question

无法理解为什么我会收到此错误 - 无论是对于＆amp;从电子邮件地址是有效的（我每天使用它们）所以无法弄清楚这是怎么回事 - 任何帮助将不胜感激。

注意：这在生产中有效，但在dev中引发错误。我在dev中有更严格的配置。注意：我使用smtp4dev在PC上本地测试

    $to = 'myemail@mydomain.com.au';
    $cc = 'myemail@mydomain.com.au';
    $from = 'myemail@mydomain.com.au';
    $filename = 'Invoice#'.$order_id.'.pdf';
    $message = file_get_contents(ROOT_DIR.'admin/include/email-body.html');
    $content = chunk_split(base64_encode($pdf_file));
    $uid = md5(uniqid(time()));

    $headers  = 'MIME-Version: 1.0' . "\r\n";
    $headers .= 'To: '. $to . "\r\n";
    $headers .= 'Cc: '. $cc . "\r\n";
    $headers .= 'From: '. $from . "\r\n";
    $headers .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
    $headers .= "This is a multi-part message in MIME format.\r\n";
    $headers .= "--".$uid."\r\n";
    $headers .= "Content-type:text/html; charset=iso-8859-1\r\n";
    $headers .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
    $headers .= $message."\r\n\r\n";
    $headers .= "--".$uid."\r\n";
    $headers .= "Content-Type: application/pdf; name=\"".$filename."\"\r\n";
    $headers .= "Content-Transfer-Encoding: base64\r\n";
    $headers .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
    $headers .= $content."\r\n\r\n";
    $headers .= "--".$uid."--";

    if (mail($to, $subject, $message, $headers)) {
      print "SUCCESS";
    } else {
      print "FALIED";
    }

如果我在mail（）行打印变量，结果如下：

mail(<myemail@mydomain.com.au>, Company - Invoice#12451, "",
MIME-Version: 1.0 
To: <myemail@mydomain.com.au> 
Cc:
From: Customer Service <myemail@mydomain.com.au> 
Content-Type: multipart/mixed;
boundary="2c88ff549e67c83e7a6e3df0bffe9dc9"

This is a multi-part message in MIME format.
--2c88ff549e67c83e7a6e3df0bffe9dc9 Content-type:text/html;
charset=iso-8859-1 Content-Transfer-Encoding: 7bit

---> html message body stripped <---


--2c88ff549e67c83e7a6e3df0bffe9dc9 Content-Type: application/pdf;
name="Invoice#12451.pdf" Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="Invoice#12451.pdf"

--> pdf attachment stripped <--


--2c88ff549e67c83e7a6e3df0bffe9dc9--)

Answer 1

（smtp4dev的作者）

这是一个更新的答案 - 我原本无法用您发布的代码重现问题，但我注意到您的第二位输出显示有时您没有CC地址。

此代码重现该问题并导致501错误。

<?php
    $to = 'myemail@mydomain.com.au';   
    $cc = '';  
    $from = 'myemail@mydomain.com.au';
    $headers .= 'To: '. $to . "\r\n";
    $headers .= 'Cc: '. $cc . "\r\n";
    $headers .= 'From: '. $from . "\r\n";

    mail($to, $subject, $message, $headers);
?>

在Windows上，PHP邮件功能查看TO / CC地址的邮件头，并将每个头转换为SMTP RCPT TO命令。不幸的是，即使标题没有值，它也会这样做：

220 localhost smtp4dev ready
HELO Computer
250 Nice to meet you
MAIL FROM:<myemail@mydomain.com.au>
250 Okey dokey
RCPT TO:<myemail@mydomain.com.au>
250 Recipient accepted
RCPT TO:<>
501 Must specify to address <address>
QUIT
221 See you later aligator

因此，如果您没有要发送到的CC地址，则根本不需要包含CC：标头：

<?php
    $to = 'myemail@mydomain.com.au';   
    $cc = '';  
    $from = 'myemail@mydomain.com.au';
    $headers .= 'To: '. $to . "\r\n";

    if ($cc) {
        $headers .= 'Cc: '. $cc . "\r\n";
    }
    $headers .= 'From: '. $from . "\r\n";

    mail($to, $subject, $message, $headers);
?>

这对我来说很好。

Answer 2

对于收件人的格式，smtp4dev比大多数实际的SMTP中继有点挑剔。

不起作用：

helo me
mail from: me@here.com
rcpt to: somebody@mydomain.tld

使用：

helo me
mail from: me@here.com
rcpt to: <somebody@mydomain.tld>

SMTP服务器响应：501必须指定地址＆lt; address＆gt;

2 个答案: