Either way - it breaks Sendmail, some versions of Exchange, and possibly other MTA's. The proper answer to a non-existent AAAA record is NOERROR, with ANSWER 0. Hanging or refusing to answer doesn't result in another attempt to look for an A record since the name server failed to respond to a valid query. Given that the whole point of the domain is to enable email printing, HP isn't making it easy. Mark On 5/3/14, 4:18 PM, Scott Howard wrote:
On Sat, May 3, 2014 at 6:27 AM, Mark Radabaugh <mark@amplex.net <mailto:mark@amplex.net>> wrote:
Dear HP:
If your not going to support IPv6 can you at least not return SRVFAIL when asked for an AAAA record:
They aren't. Your resolver is - or at least, that's what it looks like for me.
Sending an AAAA query to their nameservers times out for me - no response at all. Sending the same query through certain resolvers (eg, Google) seems to result in the timeout being turned into a SERVFAIL.
$ dig AAAA onramp01.hpeprint.com <http://onramp01.hpeprint.com>
; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> AAAA onramp01.hpeprint.com <http://onramp01.hpeprint.com> ;; global options: +cmd ;; connection timed out; no servers could be reached
Same via Google : $ dig AAAA onramp01.hpeprint.com <http://onramp01.hpeprint.com> @8.8.8.8 <http://8.8.8.8>
; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> AAAA onramp01.hpeprint.com <http://onramp01.hpeprint.com> @8.8.8.8 <http://8.8.8.8> ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 26319 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
Scott
-- Mark Radabaugh Amplex mark@amplex.net 419.837.5015 x 1021