Timeout on Multiple Self-Hosted Domains

Sorry if this is an obvious issues, but I have searched for answers before posting. I’m having the same problems on several domains, but here is an example one.

My domain is: students.grlucas.net

I ran this command: sudo letsencrypt --apache

It produced this output:

Obtaining a new certificate

Performing the following challenges:

http-01 challenge for students.grlucas.net

Waiting for verification…

Cleaning up challenges

Failed authorization procedure. students.grlucas.net (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching http://students.grlucas.net/.well-known/acme-challenge/uS2_aimZxvFsAiS0PSu2sr1fEMP1WiQHgSmy1a0Cp9E: Timeout during connect (likely firewall problem)

My web server is (include version): Apache/2.4.38 (Raspbian)

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

My hosting provider, if applicable, is: self-hosted

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

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

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): certbot 0.31.0

I recently set up a reverse proxy with the following configuration:

<VirtualHost *:80>

 ServerName students.grlucas.net

 ProxyPreserveHost On

 DocumentRoot /var/www/html

 ProxyPass /.well-known !

 ProxyPass /

 ProxyPassReverse /


I notice there are no files written in ./well-known/acme-challenge. — should there be? I created the directories and gave the web server write permissions. I’m just not sure what else to try. TIA.

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Hi @grlucas

your port 80 doesn’t answer. A working port 80 is required to create a certificate via http validation.


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Thanks for the reply. If port 80 doesn’t work, how come the site loads? Or is it not loading from outside my network?

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It doesn’t work. There is a check of your domain - https://check-your-website.server-daten.de/?q=students.grlucas.net

http has timeouts, https answers.

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Ugh, yes, I see that now. For some reason port 80 was working for me for a while and it seems my ISP decided to block it. I should have checked that first. Thanks.

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