* Jim Reid <j...@rfc1035.com>:
> The above is a NOHOST (or NODATA) response. There was no error
> (NOERROR) and the Answer Section of the reply was empty. The name
> being looked up exists but not as the QTYPE (or QCLASS) that was
> asked for. ns1.bdm.microsoftonline.com is saying there are RRs for
> www.pimda.eu, but no AAAA records.
Jim put me on the right track. Thanks again.
ns1.bdm.microsoftonline.com and ns2.bdm.microsoftonline.com seem to be
clusters comprised of multiple machines.
To cut a long story short: The nameservers in the cluster are answering
inconsistently!
Mostly I'm getting NOERROR and an empty result set (which is bad!), but from
time to time
I'm getting NXDOMAIN as shown below...
When I repeat my query "dig @ns1.bdm.microsoftonline.com www.pimda.eu AAAA"
(same goes for ns2.bdm.microsoftonline.com) a few times, I'm getting:
; <<>> DiG 9.7.3 <<>> @ns1.bdm.microsoftonline.com www.pimda.eu AAAA
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47659
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 4
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;www.pimda.eu. IN AAAA
;; AUTHORITY SECTION:
www.pimda.eu. 3600 IN NS ns2.bdm.microsoftonline.com.
www.pimda.eu. 3600 IN NS ns1.bdm.microsoftonline.com.
NOERROR, empty response set, non authoritative ("flags: qr rd")
And later I'm getting:
; <<>> DiG 9.7.3 <<>> @ns1.bdm.microsoftonline.com www.pimda.eu AAAA
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 32597
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available
;; QUESTION SECTION:
;www.pimda.eu. IN AAAA
;; AUTHORITY SECTION:
www.pimda.eu. 1 IN SOA ns1.bdm.microsoftonline.com.
msnhst.microsoft.com. 2007070100 10800 1800 691200 3600
NXDOMAIN, empty response set, authoritative ("flags: aa")
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité - Universitätsmedizin Berlin
Campus Benjamin Franklin
Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
ralf.hildebra...@charite.de | http://www.charite.de
