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zen.spamhaus.org not resolving
zen.spamhaus.org
<https://www.dnsbl.info/dnsbl-details.php?dnsbl=zen.spamhaus.org> DNS
blacklist doesn't seem to be resolving. This caused some email to bounce on
a system because it couldn't lookup to see if an IP was on the RBL.
Re: zen.spamhaus.org not resolving [ In reply to ]
On Tue, Apr 20, 2021 at 07:34:51AM -0700,
Jared Geiger via Outages <outages@outages.org> wrote
a message of 35 lines which said:

> zen.spamhaus.org
> <https://www.dnsbl.info/dnsbl-details.php?dnsbl=zen.spamhaus.org> DNS
> blacklist doesn't seem to be resolving.

It works fine for me. (But the incredible number of IP addresses for
its name servers is a bit disconcerting.)

Could you provide details? Precise request, actual DNS result?

% dig A 192.0.1.1.zen.spamhaus.org
; <<>> DiG 9.11.5-P4-5.1+deb10u3-Debian <<>> A 192.0.1.1.zen.spamhaus.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 11405
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;192.0.1.1.zen.spamhaus.org. IN A

;; AUTHORITY SECTION:
zen.spamhaus.org. 10 IN SOA need.to.know.only. hostmaster.spamhaus.org. (
2104201507 ; serial
3600 ; refresh (1 hour)
600 ; retry (10 minutes)
432000 ; expire (5 days)
10 ; minimum (10 seconds)
)

;; Query time: 32 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Apr 20 17:08:12 CEST 2021
;; MSG SIZE rcvd: 147

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Re: zen.spamhaus.org not resolving [ In reply to ]
Seems to work here. Looking up something that is on DROP, it returns:

dig -t A 0.176.58.2.zen.spamhaus.org

; <<>> DiG 9.11.5-P4-5.1+deb10u3-Debian <<>> -t A 0.176.58.2.zen.spamhaus.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13958
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;0.176.58.2.zen.spamhaus.org. IN A

;; ANSWER SECTION:
0.176.58.2.zen.spamhaus.org. 60 IN A 127.0.0.2
0.176.58.2.zen.spamhaus.org. 60 IN A 127.0.0.9

;; Query time: 304 msec
;; SERVER: 1.1.1.2#53(1.1.1.2)
;; WHEN: Tue Apr 20 22:32:00 +07 2021
;; MSG SIZE rcvd: 88


Looking up something that is clean returns NXDOMAIN, looking up something that is not clean returns the appropriate record. I think there is no AAAA, A, CNAME for zen.spamhaus.org itself.
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