Neither 1.1.1.1 nor 1.0.0.1 resolving casalini.it


#1

dig ftp.casalini.it

; <<>> DiG 9.9.9-P1 <<>> ftp.casalini.it
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 24961
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;ftp.casalini.it. IN A

;; Query time: 36 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Wed Jun 20 11:43:38 CEST 2018
;; MSG SIZE rcvd: 44

With Server 8.8.8.8 (and many others) no problems. Any hints ? (it’s not our domain but we use it regulary)

Thanks and best regards


#2

I believe the issue is with the DNS zone itself, since it’s replying with wrong info and a malformed response 1.1.1.1 is failing verification and responding with nothing.

http://dnsviz.net/d/ftp.casalini.it/dnssec/


#3

The nameservers at casalini.it and interbusiness.it don’t support EDNS (respond with FORMERR), I added an override to turn it off, so it should start working again. @hubert If you can, please do reach out to them to upgrade their DNS software, any reasonably recent DNS server supports EDNS.


#4

Thank you very much! I will send them a mail with this Information.