<domain name> is invalid connect using port 80 (Ref 5056)

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1

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:nod.com.au

I ran this command: Using ASUSTOR Certificate creation tool

It produced this output:nod.com.au is invalid. Please ensure that your domain can be successfully connected to using port 80 (Ref 5056).

My web server is (include version): N/A. I'm only wanting to run an ASUS Mail server

The operating system my web server runs on is (include version): ASUS NAS Linux ADM

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don't know):NO

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): ASUS Cetificate Manager

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): Windows 11

2

From that error I believe your Asus is using an HTTP Challenge to get the certificate. It says that Let's Encrypt could not successfully connect to your domain. Sadly, it hides the actual error from Let's Encrypt which would be much more helpful.

This is likely caused by a configuration problem in your Asus or local network config. You may be better off asking how to do this on an Asus forum. I found this thread which may be helpful: Using HTTPS to Secure NAS Communication - ASUSTOR NAS

Note you you have an Apache web server replying to HTTP requests. You say your web server doesn't matter but something has to reply properly to the challenge from Let's Encrypt. Right now it looks like this Apache would do that.

Request to: nod.com.au/60.225.129.180, Result: [Address=60.225.129.180,Address Type=IPv4,Server=Apache

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