On 17/06/15 18:16, Kurt Jaeger wrote: > I had a case where lb1-smtp-cloud3.xs4all.net delivered to an A record > where an MX existed.
Exchange machines will also try this if all MX defer, but if they get a 4xx/5xx error they ignore it. It's quite annoying but otherwise benign. If there was as client which paid attention to the random A host responses (when not 2xx), it would an issue. _______________________________________________ mailop mailing list [email protected] http://chilli.nosignal.org/mailman/listinfo/mailop
