iToolz is a Windows program for domain verification and DNS resolving. It includes a Domain MX checker, RDNS tool and a Catch-all verifier. The Domain MX checker performs MX lookups on a list of domains and tells you which ones that can accept emails. The RDNS checker resolves IP to Host and can save the results in several different ways. The Catch-all verifier finds out which domains that accepts emails to random usernames on that domain. And it also includes a tool for cleaning your list from undesirable domains/IP's that you have found. iToolz is a unique program which was designed for the IT professionals. It's advanced features and high reliability makes it a very powerful software which few can compete with. Check it out, it's free to try!