I'm attempting to figure out an error message that I got from dnsstuff.com when examining my DNS records. The error reads as follows.
NS list does not match list from parent zone. This should be addressed because queries for this domain may require an extra lookup (and more overhead) because there is no direct relationship between the NS records at the parent and the NS records at the authoritative servers. This can cause delays. The mismatched NS list is:
nameserver ns1.domain.co. | xxx.xx.xxx.xxx is missing NS2.domain.co. | yy.yyy.yy.yyy
There are a couple questions I have regarding this.
- What is the difference between a parent and authoritative zone? In other forum posts I've seen, the seem to be used interchangeably (although that could be my misperception).
- What does it mean for the NS list not to match the list from the parent zone? What is "the list from the parent zone" to which they refer?
- How might you recommend that I resolve this?
In case this affects any answers, I'm running Virtualmin on Ubuntu 12.04.
Any help is appreciated. Many thanks in advance!