i cant make lets encrypt work + soa

[frankcisco]

what its SOA and what i must put in it? lets say my domain is vestaaaaaaaaaaaaaaaaa.com

and other question

months ago i installed ssl with lets encrypt on the server. now i want to add more and i simply cant.

heres the error:



[root@luna ~]# letsencrypt-vesta admin myweb.xyz
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for myweb.xyz
http-01 challenge for www.miweb.xyz
Using the webroot path /etc/letsencrypt/webroot for all unmatched domains.
Waiting for verification...
Challenge failed for domain myweb.xyz
Challenge failed for domain www.myweb.xyz
http-01 challenge for myweb.xyz
http-01 challenge for www.byweb.xyz
Cleaning up challenges
Some challenges have failed.

IMPORTANT NOTES:
- The following errors were reported by the server:

Domain: ansiedadweb.xyz
Type: unauthorized
Detail: The key authorization file from the server did not match
this challenge
[JDU2T7mmjOnU_-fqTcA-73MHplmTZBeGupwE.VnDlf3mCWO4XtUfXE0fjmMFwY9sENMFpjzI6ex1emuc]
!=
[JDU2T7mmjOnU_-fqTcA-73MHplmTZBeGupwE.NrYwu0tbG-F6D-yFbUhSN27M1evCdO4noQtRNGR9ui4]

Domain: www.myweb.xyz
Type: unauthorized
Detail: The key authorization file from the server did not match
this challenge
[TW2wS63W8lNrWUeF5GUlRKma8Tdp.VnDlf3mCWO4XtUfXE0fjmMFwY9sENMFpjzI6ex1emuc]
!=
[TW2wS63W8lNrWUeF5GUlRKma8Tdp.NrYwu0tbG-F6D-yFbUhSN27M1evCdO4noQtRNGR9ui4]

To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address.
Let's Encrypt returned an error status. Aborting.
[root@sever ~]#

i deleted some parts of that large string.


EDIT:

I heard something about nginx error, i disable proxy nginx support and letsencrypt works. is there a way to work with proxy nginx ON?