You have your two servers running at private addresses 192.168.0.8 and 192.168.0.7.
From the outside these are accessible through Network Address Translation from public address 62.123.142.
You have too high expectations from your NAT router
You expect your router, a simple layer 2 device, to be able to parse the HTTP requests and translate the 62.123.142 address to 192.168.0.8 in case for HTTP request for
www.beenzeria. If a HTTP requests comes in for webmail.0email.it you expect this to NAT to 192.168.0.7.
Routers are too dumb to be able to do this.
I am afraid you need a second public IP address for your second server