Create certificate from synology nas

My domain is:

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

I can not create certificate with this error:

I just transcribed this on Google Translate using Cyrillic romanization and the text of the error is

Не удалось подключиться к Let’s Encrypt. Убедитесь, что имя домена является допустимым.

‘Failed to connect to Let’s Encrypt. Make sure the domain name is valid.’

1 Like

Yes, but my domain name is absolutely valid. You can verify this through dns, as well as through port checking 80 and 443.


Does port 80 reach your nas?
for both IPv4 and IPv6?

Address: 2001:41d0:b:a74:5:39:10:93

IPv4 and IPv6 seem to return different Server headers.

Thanks! Now it is OK!

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.