Connection refused while trying to generate new certificate for my domain, standalone

standalone, I 'm trying to issue a fresh certificate for my domain automation.minervatech.xyz but getting connection timeout. Kindly guide how to fix the issue and issue certificate ..Attached is the reference of the error

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Hi @aruneshdutta

that's the reason you shouldn't use standalone, it's hard to debug.

Start a simple webserver on your domain and use another authenticator.

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Are you on the right system?
Please show the output of:
curl -4 ifconfig.co

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If your DNS records turn out to be correct and you're on the right system, this is probably a sign of a firewall intentionally blocking inbound connections on port 80. (You might not otherwise notice this behavior because your HTTPS connections are normally sent over port 443.)

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I asked because I see a running web server there:

curl -Iki automation.minervatech.xyz/
HTTP/1.1 301 Moved Permanently
connection: keep-alive
content-length: 0
location: https://www.blynk.cc
access-control-allow-origin: *

But it seems to be particular about the /.well-known/acme-challenge/ requests...
which go unanswered and then time-out.
So --standalone may not be the right approach.
Or it might be... we simply don't know enough about their system setup.

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I have attached the screenshot, actually I am trying to issue certificate for Blynk IOT platform

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port 80 is kept open at AWS security group along with 443

That IP address looks different from the one that automation.minervatech.xyz points to. Do you know why that would be?

Are you not running Certbot on the same device where you intend to use the certificate?

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http://automation.minervatech.xyz/ redirects to: https://www.blynk.cc

Name:    blynk.io
Address: 185.203.72.17
Aliases: www.blynk.cc

[yet another IP]

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actually to access blynk port 9443 is used and that is where my server page will load else it directs to the brands page at port 80

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