no browser or ping access to new virtual server

i have created a new virtual server with DNS record shown below:

$ttl 38400
@ IN SOA mydev2.com. root.mydev2.com. (
1407405531
10800
3600
604800
38400 )
vs1.mydev2.com. IN NS mydev2.com.
vs1.mydev2.com. IN A 192.168.200.100
www.vs1.mydev2.com. IN A 192.168.200.100
ftp.vs1.mydev2.com. IN A 192.168.200.100
m.vs1.mydev2.com. IN A 192.168.200.100
localhost.vs1.mydev2.com. IN A 127.0.0.1
webmail.vs1.mydev2.com. IN A 192.168.200.100
admin.vs1.mydev2.com. IN A 192.168.200.100
mail.vs1.mydev2.com. IN A 192.168.200.100
vs1.mydev2.com. IN MX 5 mail.vs1.mydev2.com.
vs1.mydev2.com. IN TXT "v=spf1 a mx a:vs1.mydev2.com ip4:192.168.200.100 ?all"

i can successfully ping mydev2.com and 192.168.200.100 but vs1.mydev2.com is dead in both browser and no ping response. i can also access it from virtualmin->services->Preview website which opens a new browser window... https://localhost:10000/virtual-server/link.cgi/192.168.200.100/http://w...

Do you have any further suggestions further tests i may run to solve this problem (day 3 and getting nowhere...).

thanks

laurence