Program check every email in list for existence and split into files with good and bad emails.
Install if from release section or build .msi, .deb, .dmg packages with gradle.
Note:
I. Run it under same public IP as you standalone mail server (Exchange, Postfix, etc).
II. Set any real email from poll you standalone server handle.
III. Set HELO/EHLO value same as your mail server use.
IV. However, it will be many false results
V. Application translated into russian, dummy set for other locales
