Failed to connect to Let's Encrypt. Please make sure the domain name is valid

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. crt.sh | 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: deangossi.com

I ran this command:
Synology DS218J (ver. DSM 6.2.3-25426 Update 3) ->sercurity->certificate->add->add a new certificate->get a certificate from Let's encrypt->{domainname=deangossi.com, email=deangossi@gmail.com, subject alternative name = server.deangossi.com}

It produced this output:
Error message: failed to connect to Let's Encrypt. Please make sure the domain name is valid

My web server is (include version): I'm running DSM 6.2.3-25426 Update 3 on my Synology DS218J.

System time: 2021-02-16 17:16:22

The operating system my web server runs on is (include version):
Not sure of the web server portion, I'm running DSM 6.2.3-25426 Update 3 on my Synology DS218J.

My hosting provider, if applicable, is: Wix.com

I can login to a root shell on my machine (yes or no, or I don't know): I believe I can do this on my mac laptop, however unaware of how to do this on the Synology DS218J.

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

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): I'm using the native version of certitificate creation built into the Synology management console.

2 Likes

HI @deangossi and welcome to the LE community forum :slight_smile:

I see an issue there; where the two names don't point to the same IP:

Name:    deangossi.com
Address: 185.230.63.107

Name:    server.deangossi.com
Address: 99.229.102.126
1 Like