(Lots of really great advice on this thread -- nice to see people helping newer users -- makes my heart warm up a bit. This is how it should be. Everybody starts somewhere)
mdixon - definitely no firewall on Plesk itself as the info you posted before showed no iptables rules.
Regarding the DNS stuff -- DNS can make your head explode if you aren't careful. Every time I think I know everything there is to know about it, I find there's something new or something I've misunderstood.
Once this issue -- whatever it is - has been taken care of, between everybody here I'm sure we'll help you sort out the DNS.
mdixon - definitely no firewall on Plesk itself as the info you posted before showed no iptables rules.
Regarding the DNS stuff -- DNS can make your head explode if you aren't careful. Every time I think I know everything there is to know about it, I find there's something new or something I've misunderstood.
Once this issue -- whatever it is - has been taken care of, between everybody here I'm sure we'll help you sort out the DNS.