I have a strange situation here: DiG 9.11.0-P3 does not work, but
nslookup does.
Target server XXX.220.6.135 is a Windows domain controller with the
following versions:
$ dig @160.220.6.135 version.bind txt chaos
> ;; Warning: query response not set
> ;; Warning: Message parser reports malformed message packet.
>
> ; <<>> DiG 9.11.0-P3 <<>> @160.220.6.135 version.bind txt chaos
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45408
> ;; flags: aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
> ;; WARNING: recursion requested but not available
>
> ;; QUESTION SECTION:
> ;version.bind. CH TXT
>
> ;; ANSWER SECTION:
> version.bind. 1476526080 IN TXT "Microsoft DNS
6.1.7601 (1DB14556)"
>
> ;; Query time: 15 msec
> ;; SERVER: 160.220.6.135#53(160.220.6.135)
> ;; WHEN: Wed Mar 01 15:27:38 WEST 2017
> ;; MSG SIZE rcvd: 76
Same, using nslookup
$ nslookup -type=txt -class=chaos version.bind XXX.220.6.135
> ;; Warning: query response not set
> ;; Warning: Message parser reports malformed message packet.
> Server: 160.220.6.135
> Address: 160.220.6.135#53
>
> version.bind text = "Microsoft DNS 6.1.7601 (1DB14556)"
Now, the unexplained behaviour:
$ dig @XXX.220.6.135 smtprelay.ZZZZZZ.it
>
> ; <<>> DiG 9.11.0-P3 <<>> @XXX.220.6.135 smtprelay.ZZZZZZ.it
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: FORMERR, id: 62354
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
> ;; WARNING: recursion requested but not available
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ; COOKIE: 4ed26dfbce8644f9 (echoed)
> ;; QUESTION SECTION:
> ;smtprelay.ZZZZZZ.it. IN A
>
> ;; Query time: 31 msec
> ;; SERVER: XXX.220.6.135#53(XXX.220.6.135)
> ;; WHEN: Wed Mar 01 15:16:58 WEST 2017
> ;; MSG SIZE rcvd: 60
However, nslookup can resolve the same name against the same server:
> $ nslookup smtprelay.ZZZZZZ.it XXX.220.6.135
> Server: XXX.220.6.135
> Address: XXX.220.6.135#53
>
> Non-authoritative answer:
> Name: smtprelay.ZZZZZZ.it
> Address: XXX.88.79.139
and cacheing is not the issue:
$ dig @XXX.220.6.135 smtprelay.ZZZZZZ.it
> ; <<>> DiG 9.11.0-P3 <<>> @XXX.220.6.135 smtprelay.ZZZZZZ.it
> ; (1 server found)
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: FORMERR, id: 45458
> ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
> ;; WARNING: recursion requested but not available
>
> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ; COOKIE: 3fe950fb090b3c46 (echoed)
> ;; QUESTION SECTION:
> ;smtprelay.ZZZZZZ.it. IN A
>
> ;; Query time: 93 msec
> ;; SERVER: XXX.220.6.135#53(XXX.220.6.135)
> ;; WHEN: Wed Mar 01 15:17:11 WEST 2017
> ;; MSG SIZE rcvd: 60
>
DIG version 9.10 worked.
Regards, Mauro
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