Synology maximal certificate requests reached for this domain name

Is there a way to reset the certificate request?
I installed new diskdrives in my Synology NAS so I started from scrap. When requesting the certificate I get a message that the server can't be reached (I forget to setup the DDNS). After setting up the DDNS I got the message "maximal certificate requests reached for this domain name"

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. |, 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:

It produced this output:

My web server is (include version):

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

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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Two things:

  • No, rate limits cannot be reset manually or by anything done by the user, such as revoking certs;
  • What exact limit are you hitting? If your DDNS wasn't set up correctly and you didn't get any certificate issued, you're most likely hitting a rate limit with a window of just an hour.. But we'd need the full error to see which rate limit you've hit.
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Hello Osiris,

Thank you very much for your quick response and time!

It seems indeed that I ran into a rate limit with a time window. I tried today again to request a certificate via Synology and it's processed without any problems.

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All rate limits have a time window, but some are just a few hours where others (more serious rate limits) have windows of 7 days. :slight_smile:

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Welcome to the Let's Encrypt Community, Jochem :slightly_smiling_face:

Just for reference:

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