On Jul 19, 2014, at 1:59 AM, Viktor Dukhovni <ietf-dane@xxxxxxxxxxxx> wrote: On Fri, Jul 18, 2014 at 10:46:53AM -0400, Ted Lemon wrote:On Jul 18, 2014, at 10:44 AM, John Levine <johnl@xxxxxxxxx> wrote:Well, OK. What would be the proper MX for mail sent to ted@xxxxxxxxxxxx? But there are address records. ,-- If an empty list of MXs is returned, the address is treated as if it was associated with an implicit MX RR, with a preference of 0, pointing to that host. '-- Which means there are 4 implied MX records causing likely 4 timeouts depending on how port 25 is handled. Since there is no support to require use of MX records, the remaining solution (although not as clean) is to create negated MX record. Regards, Douglas Otis |