[dns-operations] CNAME as NS-RRdata

Florian Weimer fw at deneb.enyo.de
Wed May 16 14:20:42 UTC 2007

* Lutz Donnerhacke:

> Is there a way to tell them, what's wrong?
> They got an email yesterday, nothing happened.

It seems that they have replaced the CNAME RRs with proper A RRs.  In
this case, it's a bad choice because ns4.checkpoint.com returns
NXDOMAIN for (almost?) everything.  Previously, this wasn't a problem
because most resolvers refuse to resolve through that CNAME.  Now
they've got real reachability issues with domains such as
zonealarm.fr. 8-(

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