Multi-domains DNS Settings

Hello forum,
I have downloaded and configured multi-domains plugin, now I need to set proper DNS settings.

I have a dedicated IP adress without any domain right now - http://goo.gl/cFzVR3

I added new domain http://goo.gl/zfBfip in the settings of the plugin.

Right now, in dns zones I have:
@ IN NS ns.masterhost.ru.
IN NS ns1.masterhost.ru.
IN NS ns2.masterhost.ru.

So, I added new A item pointing at ip adress with name *.mydomain.ru, but it doesn't seem to work. Can you please help?