Hi Jeroen
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 22394 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
We are aware that ns.bwlbmsg1zhh.bluewin.ch. doesn't play well with IPv6 (and we also know that some lb-vendors are not able to fix such simple bugs).
And tada, my sweet postfix/bind/powerdns combo will give up on it as there is clearly no answer to be gotten for that hostlabel.
ulrich@fuzzy:~$ dnsmx bluewin.ch 10 mxbw.bluewin.ch <-- ns.bwlbmsg1zh[hb].bluewin.ch 42 mxzhh.bluewin.ch <-- dns[1234].bluewin.ch 42 mxzhb.bluewin.ch <-- dns[1234].bluewin.ch 66 mx49.bluewin.ch <-- dns[1234].bluewin.ch
Why doesn't your postfix/bind/powerdns combo use mxzhb/mxzhh ?
Regards, Adrian