Let's Encrypt resolve domain to wrong IP-number

NOTE! All theses three domains point with an A-record to
but the resulting errror message for all three are the same errournous ip [] which belongs to datafoundry.com.

My domain is:ymex.net, gateware.com, mailcoach.com

I ran this command: cerbot in Let'encrypt plugin for hassio

It produced this output:
Detail: Invalid response from http://ymex.net/.well-known/acme-challenge/3xCB74Gv8kCmdAWNcFb85Q5yklH3u6x4m24d27-zRDg []: "\n\n404 Not Found\n\n

Not Found


My web server is (include version):
cerbot via Let'encrypt plugin for Home Assistant

The operating system my web server runs on is (include version):
bsd, Raspbery Pi4b

My hosting provider, if applicable, is:
Ourselfs, Ymex AB

I can login to a root shell on my machine (yes or no, or I don't know):

I'm using a control panel to manage my site (no, or provide the name and version of the control panel):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):

It's part of a automatic environment so not accessible

Please help, explain
Stig Andersson

No, they don't.. ymex.net points to and the other 2 point to as resolved by the Let's Encrypt resolver.

You can check yourself by running:

dig +trace ymex.net

Looking at the result of the trace and specifically the hostname of the authorative nameserver:

ymex.net.		300	IN	A
;; Received 53 bytes from in 205 ms

Did you pay your fees for your domain? As it seems to be parked.


Interresting result. Yes, the ymex.net domain had expired, but has been renwed (if you check the whois). Strangely enough - they have not set nameservers back after renewal.

Anyway, check any of the other domains, mailcoach.com or gateware.com. The resulting IP is the same.
Nameservers are ns.ymex.se and ns.ymex.net which we are located in house and under our control.

1 Like

dig gateware.com

; <<>> DiG 9.2.1 <<>> gateware.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7096
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;gateware.com. IN A

gateware.com. 13798 IN A

gateware.com. 18117 IN NS ns.ymex.net.
gateware.com. 18117 IN NS ns.ymex.se.

ns.ymex.se. 268 IN A
ns.ymex.net. 133339 IN A

;; Query time: 11 msec
;; WHEN: Wed Mar 9 09:06:50 2022
;; MSG SIZE rcvd: 127

1 Like

It seems to be up and running again currently indeed.

You could try to get a certificate again now :slight_smile:


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