On Tue, 04 Jul 2017 at 17:23:52 +0200
Joachim Fahrner <jf@???> wrote:

> Am 2017-07-04 15:37, schrieb Alessandro Selli:
>
> >
> > I really wonder what did mxtoolbox.com check, as I cannot see what
> > dns.org
> > and shockmedia.com have to do with dyne.org:
>
> That's strange. Something in my test changed dyne.org magically to
> dns.org. But that was not me, I used cut&paste ;-)
>
> The only explanation I have is, that sometimes there is overload at
> dyne.org dns servers. The TTL values are really low and prevent mostly
> caching.
>
> $ dig tupac2.dyne.org
>
> ; <<>> DiG 9.9.5-9+deb8u11-Debian <<>> tupac2.dyne.org
> ;; global options: +cmd
> ;; connection timed out; no servers could be reached
>
> $ dig tupac2.dyne.org
>
> ; <<>> DiG 9.9.5-9+deb8u11-Debian <<>> tupac2.dyne.org
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37556
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 4
>

> ;; OPT PSEUDOSECTION:
> ; EDNS: version: 0, flags:; udp: 4096
> ;; QUESTION SECTION:
> ;tupac2.dyne.org.        IN    A

>

> ;; ANSWER SECTION:
> tupac2.dyne.org.    300    IN    A    178.62.188.7

>

> ;; AUTHORITY SECTION:
> dyne.org.        900    IN    NS    ns.dyne.org.
> dyne.org.        900    IN    NS    ns2.dyne.org.
> dyne.org.        900    IN    NS    ns3.dyne.org.

>

> ;; ADDITIONAL SECTION:
> ns.dyne.org.        300    IN    A    188.166.98.127
> ns2.dyne.org.        300    IN    A    198.199.70.248
> ns3.dyne.org.        300    IN    A    178.21.114.142

>
> ;; Query time: 657 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Tue Jul 04 17:22:16 CEST 2017
> ;; MSG SIZE rcvd: 161

I'm afraid this has to do with the DNS server you're using (;; SERVER:
127.0.0.1#53(127.0.0.1), that is), as I get these values:

[alessandro@draco ~]$ dig tupac2.dyne.org

; <<>> DiG 9.9.5-9+deb8u11-Debian <<>> tupac2.dyne.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 19560
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 6

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;tupac2.dyne.org.               IN      A

;; ANSWER SECTION:
tupac2.dyne.org.        300     IN      A       178.62.188.7

;; AUTHORITY SECTION:
dyne.org.               86400   IN      NS      ns2.dyne.org.
dyne.org.               86400   IN      NS      ns3.dyne.org.
dyne.org.               86400   IN      NS      ns.dyne.org.

;; ADDITIONAL SECTION:
ns.dyne.org.            86400   IN      A       188.166.98.127
ns.dyne.org.            86400   IN      AAAA    2a03:b0c0:2:d0::95:e001
ns2.dyne.org.           86400   IN      A       198.199.70.248
ns2.dyne.org.           86400   IN      AAAA    2604:a880:400:d0::27:4001
ns3.dyne.org.           86400   IN      A       178.21.114.142

;; Query time: 1041 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Jul 04 18:19:43 CEST 2017
;; MSG SIZE rcvd: 217

[alessandro@draco ~]$

Which is consistent with the domain's value of 86400 for the EXPIRE SOA
record:

[alessandro@draco ~]$ host -t SOA dyne.org
dyne.org has SOA record ns.dyne.org. root.dyne.org. 2017062500 7200 3600
86400 900
[alessandro@draco ~]$



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Alessandro Selli http://alessandro.route-add.net
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