You just don't get it. You are off wandering around in the weeds. Read the tail end of Chapter 5 in the book "DNS and BIND" describing the MX selection algorithm in layman's terms to (perhaps) understand why having MX records referencing CNAMEs is bad.
It may work right now for you, but referencing CNAMEs in MX records eventually _will_ cause delivery loops the next time you accidentally fat-finger a config. If you continue to be hard-headed about this and not listen to the 100s of years of collective wisdom dispensed, then go ahead and leave yourself set up for a potential DoS against yourself, we're not going to stop you... and we're not going to feel sorry for you either. FIN Regards, Mike Al Stu wrote: > Analyze this. > > Query MX dns.com > > Response MX nullmx.domainmanager.com > > Query A nullmx.domainmanager.com > > Response CNAME mta.dewile.net, A 64.40.103.249 > _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users