North American Network Operators Group
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Re: VeriSign SMTP reject server updated

  • From: Stephen J. Wilcox
  • Date: Sun Sep 21 11:21:52 2003 
On Sun, 21 Sep 2003, Daniel Roesen wrote:

> On Sun, Sep 21, 2003 at 10:08:27AM +0000, Stephen J. Wilcox wrote:
> > What if you change the behaviour of the GTLD named daemons to return
> > an NXDOMAIN response to any MX queries on non-existent domains, you
> > will then take this whole debate on SMTP out of the equation ...
> 
> MTAs fall back to the A RR if there are no MX RRs for a given
> recipient domain.

That was my understanding but on checking with Paul he said that NXDOMAIN means 
dont do further checks so dont look for A...

Steve