Here is the code I have written:

#!/usr/bin/perl

#Declare packages to be used always including strict and utf8
use strict;
use utf8;
use Mail::Audit;
use IO::Handle;
use DBI;

#Connect to the database
my $dbh = DBI->connect("dbi:Pg:dbname=database", "user", "password", {
+AutoCommit => 0});

#Declare variables to be used including command line variables if need
+ed
my ($stored_email, $log, $to, $from, $forward_address, $store, $body, 
+$sql, $sth, $date, $local_address);
my (@filter, @row);
my (%forward);
my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(t
+ime);
$date = "$mday/$mon/$year $hour:$min:$sec";

#Create any functions necessary

#Main body of program
##Set variable values
$sql = "SELECT \"ForwardMailTo\", \"ForwardMailFrom\"
        FROM \"tblForwardMail\"";
$sth = $dbh->prepare($sql);
$sth->execute;
while (@row = $sth->fetchrow) {
    $forward{$row[0]} = $row[1];
}
$stored_email = "stored_mail.txt";
$log = "audit_mail.log";
$store = "NO";

##Open the log file
open (LOG, ">>$log") or die "$date --- Couldn't open $log";

##See if there is a match for the to email to find the forward address
my $incoming = Mail::Audit->new;
$to = $incoming->to();
$from = $incoming->from();

##Test to see if the to address exists and map the forwarding address
while(my ($key, $value) = each(%forward)) {
    if ($to =~ $key) {
        $local_address = $key;
        $forward_address = $value;
    }
}

if ($forward_address) {
    print LOG "$date --- $to has been mapped to $forward_address\n";
    $sql = "SELECT \"tblForwardMail\".\"ForwardMailID\", \"tblFilterMa
+il\".\"FilterMailEmail\"
            FROM \"tblForwardMail\"
            LEFT JOIN \"tblFilterMail\" ON \"tblForwardMail\".\"Forwar
+dMailID\"=\"tblFilterMail\".\"ForwardMailID\"
            WHERE \"tblForwardMail\".\"ForwardMailTo\"='$local_address
+'";
    $sth = $dbh->prepare($sql);
    $sth->execute;
    while (@row = $sth->fetchrow) {
        push(@filter, $row[1]);
    }
}
else {
    print LOG "$date --- No mapping for $to\n";
    close (LOG);
    exit();
}

##Check to see if the from address is part of the filter list
print LOG "$date --- Searching for filter email.\n";
foreach my $email_address(@filter) {
    if (($from =~ $email_address)){
        $store = "YES";
    }
}

##Either store the email and forward it or just forward the email
if ($store eq "YES") {
    open (OUTPUT, ">>$stored_email") or print LOG "$date --- Couldn't 
+open $stored_email.\n";
    print OUTPUT @{$incoming->body()};
    print OUTPUT "##--------------------------------------------------
+-------------##";
    close(OUTPUT);
    print LOG "$date --- Filter address found. $to has been forwarded 
+to $forward_address\n";
    $incoming->resend($forward_address) or print LOG "$date --- Couldn
+'t forward to $forward_address\n";
}
else {
    print LOG "$date --- No filter address found.  $to has been forwar
+ded to $forward_address.\n";
    $incoming->resend($forward_address) or print LOG "$date --- Couldn
+'t forward to $forward_address\n";
}

##Close the log file
close (LOG);
$dbh->disconnect();
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