I’ve seen the posts on how to setup Let’s Encrypt for non-standard ports using the TXT record method but it still fails. I can’t understand how this TXT record instructs the verification process to use the non-standard port.
root@eve-ng:/usr/local/sbin# certbot-auto -d eve-ng.networkdavid.net --manual --preferred-challenges dns certonly
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Obtaining a new certificate
Performing the following challenges:
dns-01 challenge for eve-ng.networkdavid.net
NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you’re running certbot in manual mode on a machine that is not
your server, please ensure you’re okay with that.
Are you OK with your IP being logged?
Please deploy a DNS TXT record under the name
_acme-challenge.eve-ng.networkdavid.net with the following value:
Once this is deployed,
Press Enter to Continue
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. eve-ng.networkdavid.net (dns-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: DNS problem: NXDOMAIN looking up TXT for _acme-challenge.eve-ng.networkdavid.net
The following errors were reported by the server:
Detail: DNS problem: NXDOMAIN looking up TXT for
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A record(s) for that domain
contain(s) the right IP address. Additionally, please check that
your computer has a publicly routable IP address and that no
firewalls are preventing the server from communicating with the
client. If you’re using the webroot plugin, you should also verify
that you are serving files from the webroot path you provided.
Description: Ubuntu 16.04.2 LTS