Multi-domains - url forwarding

Hi,

I have installed the plugin Multi-domains and added several domains. Next i wanted to change the A-record of every site i previously added. But my main site is hosted on a shared hosterprovider. The forwarding with an A-record gives me a "Apache is functioning normally". In the admin section for every site there is an option that is called URL-forwarding. This also works, but my question is: Does this function works properly with the Multi-site plugin ? I hope you understand my question.