My domain is: dhis2.la
I ran this command: certbot certonly --non-interactive --standalone --agree-tos -m nguyenanhdung191@gmail.com -d dhis2.la
It produced this output: Requesting acme-v02.api.letsencrypt.org/directory: No route to host
Operating system: Ubuntu 20.04
rg305
2
Hi @nguyenanhdung191, and welcome to the LE community forum 
Seems like a routing issue...
Please show the outputs of:
nslookup acme-v02.api.letsencrypt.org
netstat -nr
ifconfig | grep inet
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rg305
3
After we fix the routing issue, we need to address the use of --standalone
.
Noting that there is a web server responding:
curl -Ii http://dhis2.la/.well-known/acme-challenge/Test_File-1234
HTTP/1.1 403 Forbidden
Date: Tue, 30 Aug 2022 04:14:02 GMT
Server: Apache
Content-Type: text/html; charset=iso-8859-1
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system
Closed
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