404 Not Found using Multi-Domains Plugin

Hi, I follow the instruction on how to configure the Multi-Domains plugin on my network.

I added 2 domains and created the A Record for every domain.

But, I am receiving an 404 Not Found Error when trying to access on of the new domains I created for testing purpose.

I created the site http://testing.sistemago.net

The additional domains are in separated CPanels.

Can this be caused because we have to configure the dedicated IP we have on this 2 domains too?

Thank in advance