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.

Some of the functions included are...
1. Up to 500 simultaneous connections
2. Domain MX verification
3. Reverse DNS lookup of IP addresses
4. Catch-all mail server verification
5. Get input from an URL
6. Clean your lists from undesireable domains/IP's
7. Highly advanced configuration abilities
8. Works on any computer with an Internet connection
9. The automatic help-mode explains each field in the program
10. And much more...

The license of this software is Free Trial Software, the price is $95.00, you can free download and get a free trial.