Japanese website names and Certbot

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. https://crt.sh/?q=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:

I ran this command:
sudo /usr/local/bin/certbot-auto --apache

It produced this output:
The bot cannot find the virtual hostname.

My web server is (include version):

The operating system my web server runs on is (include version):
Centos 6

My hosting provider, if applicable, is:

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

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

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

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Does your Apache configuration use IDNA encoding for your domain name?

What does the line for ServerName/ServerAlias say?

Hi @robouden

try it with


Thank you. Yes, that was the issue. Now fixed.



That question was helpful, thanks!

My tool “check your website” requires Ascii - input to check DNS and Urls.

But if a user has an IDN-domain: What’s the Ascii version of the domain name? Sometimes it’s difficult to find that version.

So I’ve added a small switch: The input is transformed to Ascii. No change -> the job starts.

New result: The input is replaced. So it’s a small Punycode-converter.

First input: フラワースクール東京.jp

One click: xn–pckta7frdmv5gc5159dy09b.jp

Next click starts the job.

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