Will MX lookup ignore MX on server which also has NS delegation.

[Paul Vixie]

Barry Margolin <barmar at alum.mit.edu> writes:

> If they're running BIND it should ignore the MX and A records in the 
> parent zone because of the delegation.  But I believe there are other 
> DNS implementations that do not do this.

BIND or no BIND, once the NS RRs get out, the parent's not going to get
any more MX or A queries from that cache, for the domain in question.
-- 
Paul Vixie