1.) After installation is done make sure the program is not running on
    background (mailserver.exe or any other service/program which uses it
2.) Use our keygen to patch mailserver.exe
3.) Generate a valid keyfile with our keygen and put it to
    %PROGRAMFILES%\Kerio\MailServer\license directory

    (NOTE: If you generated your license file right after patching your
    keyfile is generated to %PROGRAMFILES%\Kerio\MailServer so manually
    move it from that directory to correct one)

4.) All done!