What's the point of NS settings on domains added with Plesk?
In Plesk, when you add domains, it lets you specify the Nameservers for that domain. What's the point of that?
For a domain, aren't the only nameserver settings that matter the ones at the domain's registrar?
NS records are used to delegate authority, so the NS records for your domain should match those that are listed at your registrar, otherwise, some things might not work right. As per RFC guidelines, BIND 9.x will reject zones without at least one NS record.