DSM maximal certificate requests

I have been trying to set up a certificate on my Synology NAS. Before this message I was getting the message “failed to connect to Let’s Encrypt check you domain name is correct”. I have not received any certificates.

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: ravenshome.dyndns-web.com

I ran this command: control panel>security>certificate>add>Add a new certificate>Get a certificate from Let’s Encrypt

It produced this output: Maximal certificate request reached for this domain name

My web server is (include version):

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

My hosting provider, if applicable, is:Dyndns

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

Hi @mtotton

checking your domain there are no certificates visible - https://check-your-website.server-daten.de/?q=ravenshome.dyndns-web.com#ct-logs

So you have hitted the

There is a Failed Validation limit of 5 failures per account, per hostname, per hour.

limit. But: Your domain is invisible.

Domainname Http-Status redirect Sec. G
http://ravenshome.dyndns-web.com/ -14 10.030 T
Timeout - The operation has timed out
https://ravenshome.dyndns-web.com/ -14 10.030 T
Timeout - The operation has timed out
http://ravenshome.dyndns-web.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de -14 10.030 T
Timeout - The operation has timed out
Visible Content:

Port 80 must be open and must answer, if you want to create a certificate.

Open your firewall (or something else, that blocks), then recheck your domain, if port 80 answers.

Then wait one hour, then try it again.

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