用PHPmailer发送的电子邮件不可读

Question

I use PHPMail to send an email with pdf attachment. In most cases (about 90% of the times) the email gets send properly, but in some cases and I don't know in which cases, the email will show like this:

: 
MIME-Version: 1.0
Content-Type: multipart/mixed;
    boundary="b1_a3f9faae87f56d6f3d5b7325ee3fadf5"


--b1_a3f9faae87f56d6f3d5b7325ee3fadf5
Content-Type: multipart/alternative;
    boundary="b2_a3f9faae87f56d6f3d5b7325ee3fadf5"

--b2_a3f9faae87f56d6f3d5b7325ee3fadf5
Content-Type: text/plain; charset = "iso-8859-1"
Content-Transfer-Encoding: 8bit


Schakel HTML in om dit bericht goed te kunnen lezen




--b2_a3f9faae87f56d6f3d5b7325ee3fadf5
Content-Type: text/html; charset = "iso-8859-1"
Content-Transfer-Encoding: 8bit





    <br><br>
                <table cellpadding='0'>
                    <tr>
                        <td>&nbsp;</td>
                        <td width='130'><img src='http://www.emdr-lightbar.nl/images/psytec_mail.png' width='108' height='42' alt='Psytec'/></td>
                        <td><b>FACTUUR</b></td>
                    </tr>
                    <tr>
                        <td style='border-top: 0px;border-bottom: 0px;'>&nbsp;</td>
                        <td style='border-bottom: 1px solid #ededed !important;' colspan='2'></td>
                    </tr>
                    <tr>
                        <td width='20'>&nbsp;</td>
                        <td colspan='2'><font face='Arial, Helvetica, sans-serif' size='2'>
                            <br><br>
                            Geachte mevrouw,<br><br>
                            Uw betaling is in goede orde ontvangen. Dank u wel. Uw factuur vindt u in de bijlage van deze email. 
                            <br><br>
                            Heeft u nog vragen? Neemt u dan contact op via de klantenservice</a>.
                            <br><br>
                            Uw ordernummer: 151<br><br>
                            Met vriendelijke groet,<br>
                            Fred Verschuur
                            <br><br><br>
                            </font>
                        </td>
                    <tr>
                        <td style='border-top: 0px;border-bottom: 0px;'>&nbsp;</td>
                        <td style='border-bottom: 1px solid #ededed !important;
        color: #757575;' colspan='2'></td>
                    </tr>
                </table>
                <br><br><br><br><br><br>




--b2_a3f9faae87f56d6f3d5b7325ee3fadf5--
--b1_a3f9faae87f56d6f3d5b7325ee3fadf5
Content-Type: application/pdf; name="FA2015161.pdf"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="FA2015161.pdf"

JVBERi0xLjQKMyAwIG9iago8PC9UeXBlIC9QYWdlCi9QYXJlbnQgMSAwIFIKL1Jlc291cmNlcyAy
IDAgUgovQW5ub3RzIFs8PC9UeXBlIC9Bbm5vdCAvU3VidHlwZSAvTGluayAvUmVjdCBbMjkwLjcz
IDI0MS44OSA0MDQuMjUgMjMxLjg5XSAvQm9yZGVyIFswIDAgMF0gL0EgPDwvUyAvVVJJIC9VUkkg
KG1haWx0bzprbGFudGVuc2VydmljZUBwc3l0ZWMubmwpPj4+Pl0KL0dyb3VwIDw8L1R5cGUgL0dy
b3VwIC9TIC9UcmFuc3BhcmVuY3kgL0NTIC9EZXZpY2VSR0I+PgovQ29udGVudHMgNCAwIFI+Pgpl

I used this code:

<?PHP

function mailTo($to, $subject, $fromname, $message, $headers, $attachment, $attname) {
    global $mailer_user, $mailer_pass;
    require_once('class.phpmailer.php');
    $mail       = new PHPMailer();

    $body           = preg_replace('/\[\]/',"",$message);

    $mail->IsSMTP();
    $mail->Host             = "smpt.server.nl";

    $mail->SMTPAuth     = true;
    $mail->Host             = "smpt.server.nl";
    $mail->Port             = 26;
    $mail->Username     = "username";
    $mail->Password     = "password";

    $mail->IsHTML(true);
    $mail->AltBody    = "Schakel HTML in om dit bericht goed te kunnen lezen";

    $mail->AddReplyTo('reply@domain.nl', 'Name');   
    $mail->SetFrom('klantenservice@domain.nl', 'Name');
    $mail->FromName     = $fromname;
    $mail->AddBCC('bcc@domain.nl');

    $mail->Subject      = $subject;
    $mail->Body     = $body;

    $mail->addCustomHeader($headers);

    $address = $to;
    $mail->AddAddress($address, $address);

    if ($attachment) $mail->AddStringAttachment($attachment, $attname, $encoding = 'base64', $type = 'application/pdf');

    if(!$mail->Send()) {
        return false;
    } else {
        return true;
    }
}


?>

How can I fix this?

Answer 1

Must be some kind of problem inside the mail headers.

$mail->addCustomHeader($headers);

What's inside $headers ?

And what if you remove that line to test?

Update :

Your headers are almost certainly broken somewhere. For example, the shown email(body) starts with a single : on the whole line. So, somewhere before that there is a problem, probably caused by the contens of $headers - or $headers being empty or undefined as you say. And the remaining headers are pushed into the body of the mail, breaking all the MIME formatting.

So I would start by removing $mail->addCustomHeader($headers); to test if the problem is within $headers .

Answer 2

Use isHTML() after body. Its work for me in past.

$mail->Body = $body;
$mail->IsHTML(true);