$log_path = "C:\scripts\logs.txt"
$rollback_path = "C:\scripts\"
$current_rollback_list_name = "current_roll_back.list"
$current_rollback = $rollback_path + $current_rollback_list_name
$rollback_date = get-date -format "M_dd_yyyy"
$rollback_backup_file = $rollback_path + "rollback_" + $rollback_date + ".list"
$tmp_file_holder = "current_list.bk"


if(test-path $current_rollback) {
    try {
    move-item $current_rollback $rollback_backup_file -force
    } catch {
            echo $_ >> $log_path
    }
}

$domain_list = invoke-webrequest http://mirror1.malwaredomains.com/files/domains.txt | select -expandproperty content
$domain_list -replace "`t", ";" -replace ";;" >  $tmp_file_holder
$domain_content = get-content $tmp_file_holder

$zone_list = get-dnsserverzone | where {$_.IsDsIntegrated -eq $false} | select -expandproperty Zonename

foreach($line in $domain_content){
    if(-not($line | select-string "#")) {
    $line_tmp = $line -split ";"
    $line = $line_tmp[0]
        if($zone_list -notcontains $line) {
            try {
            Add-DnsServerPrimaryZone "$line" -DynamicUpdate "none" -ZoneFile "$line.dns"
            } catch {
            echo $_ >> $log_path
            }
        }
        echo "$line" | Out-File -FilePath $current_rollback -Encoding ascii -append
    }
}