Failed Authorization Procedure


I am trying to setup a wildcard letsencrypt on my Nginx running on ubuntu 14.04, the error is popping up after I am trying to validate the TXT record, it’s failing everytime.

Failed authorization procedure. (dns-01): urn:ietf:params:acme:error:dns :: DNS problem: NXDOMAIN looking up TXT for

 - The following errors were reported by the server:

   Type:   None
   Detail: DNS problem: NXDOMAIN looking up TXT for

My, domain name registrar is namecheap, and hosting is AWS . please help.




Did you add the requested DNS record to your domain (in NameCheap)?

Thank you


Hi @bhaskarb

it’s curious: You have created an entry with the correct name.

D:\temp>nslookup -type=txt text =


Lower / upper isn’t a problem.

D:\temp>nslookup -type=txt text =


You didn’t create a typical wrong entry:

D:\temp>nslookup -type=txt
*** wurde von nicht gefunden: Non-existent domain.

But Letsdebug

can see three * - certificates:

Serial: 424975080353586386072907275331994760098180
NotBefore: 2018-10-13 20:55:51 +0000 UTC
Names: [*]

Serial: 349474951747517855987531223946208876743558
NotBefore: 2018-10-13 20:52:23 +0000 UTC
Names: [*]

Serial: 427376777169316786629895596231568548013632
NotBefore: 2018-10-13 20:50:07 +0000 UTC
Names: [*]

so it looks that it worked today.

Can you start a new order, create / change the txt entry. Then wait two or three hours before you confirm?

And: What’s your client, what command did you used?


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