multiple domain in the same server

Hi,
i’m a newbye of virtualmin.
I’ve two domains cbr600.it and cbr600-italia.it.
In the dns server these two domains point at the same public ip address.
This address is assigned on a server (with NAT).
With virtualmin i’ve created two virtual domain.
In the first there is a forum, in the second there is only a index.html page with a comment inside.
The first works fine, but the second point to the first.
Can anyone help me??

Thanks.

Sorry,
the problem was IE9. With compatibility option it works fine.