dToolz is an advanced Windows software program with a variety of features relating to domain verification and DNS resolving. It includes a Domain MX verifier, a RDNS checker and a Catch-all verifier. The Domain MX verifier will perform MX lookups on the domains in a list to determine which domains that can accept emails. The RDNS tool will perform IP to Host resolving and save the results in a few different ways. And the Catch-all verifier will find out which domains that accepts emails to any random username on that very domain. dToolz is a one of a kind software that was developed for the IT professionals, it has several advanced features and you won't be able to find anything else like it. It also includes a free listcleaner tool to quickly and easily remove the undesireable domains/IP's from your list. The results are saved in many different ways to suit your needs. So check it out, you can try it without charge for as long as you need!