Warning: mail() [function.mail]: SMTP server response: 552 5.7.0 DATA header size exceeds maximum permitted - fpdf

Question

I'm Beau from Fijura Web Design in Perth, Western Australia.
Having an issue on my server. I am trying to create a script that will send an email with an attachment and whenever I try to run the script I get the following response:
Warning: mail() [function.mail]: SMTP server response: 552 5.7.0 DATA
header size exceeds maximum permitted in E:\folder\folder\_api\sendreports.php
on line 52
The code I am using is a proven script as I use it on shared Linux servers at our data centre but I cannot get it to work on my Windows server. The script I use is:
include "../reports/rankings.php"; //this is my FPDF attachment
$to=$array['email']; //this pulls an email address from an array output by my MySQL Server
$from="Fijura SEO<seo#fijura.com.au>";
$subject="SEO Ranking Report - New Data ".date("d M Y");
$message="New SEO data is available. See attached report.";
// a random hash will be necessary to send mixed content
$separator = md5(time());
// carriage return type (we use a PHP end of line constant)
$eol = PHP_EOL;
// attachment name
$filename = "SEO-Ranking-Report-".date("d-M-Y").".pdf";
// encode data (puts attachment in proper format)
$pdfdoc = $pdf->Output("", "S");
$attachment = chunk_split(base64_encode($pdfdoc));
// main header (multipart mandatory)
$headers = "From: ".$from.$eol;
$headers .= "MIME-Version: 1.0".$eol; //If I remove all $header information from this line down the email sends fine, just without the attachment.
$headers .= "Content-Type: multipart/mixed; boundary=\"".$separator."\"".$eol.$eol;
$headers .= "Content-Transfer-Encoding: 7bit".$eol;
$headers .= "This is a MIME encoded message.".$eol.$eol;
// message
$headers .= "--".$separator.$eol;
$headers .= "Content-Type: text/html; charset=\"iso-8859-1\"".$eol;
$headers .= "Content-Transfer-Encoding: 8bit".$eol.$eol;
$headers .= $message.$eol.$eol;
// attachment
$headers .= "--".$separator.$eol;
$headers .= "Content-Type: application/octet-stream; name=\"".$filename."\"".$eol;
$headers .= "Content-Transfer-Encoding: base64".$eol;
$headers .= "Content-Disposition: attachment".$eol.$eol;
$headers .= $attachment.$eol.$eol;
$headers .= "--".$separator."--";
// send message
mail($to,$subject,$message,$headers) or die("Failed");
The attached PDF should look like this: Sample SEO Rankings Report
also the php.ini file is configured as follows:
[mail function]
; For Win32 only.
; http://php.net/smtp
SMTP = mail.bigpond.com
; http://php.net/smtp-port
smtp_port = 25

Answer 1

I guess your email will be come back.I have 3 recommendation:
1. Read careful The Spamhaus Project that it cause your emails aren't spam.
2. create an *.eml and send it via socket. your .eml contain of your email such as type of header,body, attachment and etc.
3. don't use mail() function of php language, because some of shared hosting ban it.