Challenge failed for domain - Connection refused

My domain is:
I ran this command: sudo ./
It produced this output:

Challenge failed for domain

Connection refused

My web server is (include version): (
The operating system my web server runs on is (include version): Linux
My hosting provider, if applicable, is: amazon ec2-server
I can login to a root shell on my machine (yes or no, or I don’t know): yes


I had to change my ec2 server yesterday, so I am reloading my website, and I I got the error above.
IP adress of server is still the same, nothing changed in GoDaddy settings.
I opened the necessary ports for me (80, 8888, 22, 443 etc.).

I went to:

But frankly I don’t understand the errors thrown.
Help much appreciated !

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Firewall open?

Webserver listening on port 80?

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Hi @Maxence

has an own, additional firewall.

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Are you saying that the above ports opening are not enough and there is an additionnal firewall to handle somewhere in EC2 AWS? I googled but couldn’t find where to look.

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