Need help for 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., 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: generate Lets encrypt certificate from Synology DSM

It produced this output: failed to generate certificates - check your domain

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): yes

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

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

Thanks a lot for your help

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Hi @syn

there is a check of your domain, ~~15 minutes old -

There is no ip address:

Host T IP-Address is auth. ∑ Queries ∑ Timeout A yes 1 0
AAAA yes Name Error yes 1 0

So you can't use http validation.


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I’ve added some IPs on the REGISTRAR, and now i’ve a message indicateing what i’ve reach maximum number of certificate request for that domain.

i already use certificate for current domain ‘’, but i want to replace this domain with my new domain ‘

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My problem is fixed, thanks for your help

Best regards

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