CNAME as NS record?

[Jim Reid]

>>>>> "brady" == brady  <brady at alluvium.com> writes:

    brady> Hello, I believe it is illegal to have an NS record point
    brady> to a CNAME as per the RFC? 

You're correct. RFC1034 says the RDATA for an NS record is a host name.
CNAMEs are not host names. They're names that point at host names. So
an NS record should not point to a CNAME.

    brady> But can it actually cause lookup problems in the real world?

Yes.

    brady> I have a customer having some odd problems and noticed all
    brady> of his NS records are CNAMEs. 

It looks like you've answered your own question.