altermime + php

Hi all,
I'm trying to modify all the outgoing email.
So I've manage to do something but it's not the right way (DKIM fail)

In my master.cf :

Code:

127.0.0.1:10027 inet n - n - - smtpd
        -o content_filter=dfilt:
dfilt     unix    -       n       n       -       -       pipe
    flags=Rq user=filter argv=/etc/postfix/disclaimer -f ${sender} -- ${recipient}

and my disclaimer :

Code:

#!/bin/sh
# Localize these.
INSPECT_DIR=/var/spool/filter
SENDMAIL=/usr/sbin/sendmail

# Exit codes from <sysexits.h>
EX_TEMPFAIL=75
EX_UNAVAILABLE=69


php -f /var/www/test-infos/ok.php in.$$ $@

# Clean up when done or when aborting.
trap "rm -f in.$$" 0 1 2 3 15

# Start processing.
cd $INSPECT_DIR || { echo $INSPECT_DIR does not exist; exit
$EX_TEMPFAIL; }

#cat > in.$$ || { echo Cannot save mail to file; exit $EX_TEMPFAIL; }



#/usr/bin/altermime --input=in.12 \
#                   --disclaimer=/etc/postfix/disclaimer.txt \
#                   --disclaimer-html=/etc/postfix/disclaimer.txt \
#                   --xheader="X-Copyrighted-Material: Please visit http://www.company.com/privacy.htm" || \
#                     { echo Message content rejected; exit $EX_UNAVAILABLE; }


$SENDMAIL -oi "$@" <in.$$

exit $?

After that I'm using PHP to modify mail email content like this :
Tho goal of this is to track all outgoing email and to get some stats on the opening rate.

Thanks for your help !

PHP:

try {
        $db = new PDO($dsn, $user, $password, array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8', PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING));
    } catch (PDOException $e) {
        echo 'Connexion échouée : ' . $e->getMessage();
    }
  
    $file        =    fopen("/var/spool/filter/".$argv[1], "a");

    $from        =    $argv[3];
    $to            =    $argv[5];
  
    $insert        =    $db->prepare('insert into emails (emailfrom, emailto) values (:emailfrom, :emailto)');
    $insert->bindParam(':emailfrom',    $from,    PDO::PARAM_STR);
    $insert->bindParam(':emailto',        $to,    PDO::PARAM_STR);
    $insert->execute();
    $id            =    $db->lastInsertId();
  
    $input = file_get_contents("php://stdin");
  
  
  
    $input = str_replace(
        '</body>',
        '<img src="http://myURL.com/ok/open.php?id='.$id.'" height="1" width="1"/></body>',
        $input
    );
  
    fwrite($file, $input);
  
    fclose($file);