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. Regards, Daniel
