bounce_notice_recipient = someone@nowhere.com
error_notice_recipient = someone@nowhere.com

someone: /dev/null

<?php
#parse_logs.php
# load local file into array
$val = file("mail.log");

$pattern = '/status=bounced/';

foreach ($val as &$value) {
if (preg_match($pattern,$value)) {
        $a = split('[<>]', $value);

       //if you prefer you can also use: preg_match_all('/<(.*)>/', '$value', $matches);
       #can be helpful to print the following to the screen during tests
       # echo $a[1];

        // Make a MySQL Connection
        mysql_connect("localhost", "username", "password") or die(mysql_error());
        mysql_select_db("postfix_db") or die(mysql_error());

        // Insert a row of information into the table "example"
        mysql_query("INSERT INTO emails (emailaddress) VALUES('$a[1]') ")
        or die(mysql_error());

        #again, if you want to see while running manually from cli
        #echo "Data Inserted!";

}
#again, if you want to see while running manually from cli
#echo "n";
}

?>

php parse.php > results.txt

php parse_logs.php | /usr/sbin/sendmail someemailaddress@nowhere.com

notify_classes = bounce, 2bounce, resource, software
2bounce_notice_recipient=bouncepipe@example.com
bounce_notice_recipient=bouncepipe@example.com

bouncepipe@example.com     bouncepipe:

bouncepipe   unix  -       n       n       -       -       pipe
      flags=DRhu user=list argv=/etc/postfix/bouncepipe.pl

#!/usr/bin/perl

my $message = '';
my $sender = '';
my $recipient = '';

foreach $line ( <STDIN> )
{
    $message .= $line;
    chomp( $line );
    if ( $line =~ /Final-Recipient: /)
    {
        my $index = index($line, ';');
        $recipient = substr($line, $index+2);
    }
    if ( $line =~ /X-Postfix-Sender: /)
    {
        my $index = index($line, ';');
        $sender = substr($line, $index+2);
    }
}
# Do whatever you need to do with $sender and $recipient