I have two question.
1. It's not auto retry later when it's failed.
2. It's need notification admin user when it's failed.
I know sometimes network maybe too slow. But it's can auth when I manual force retry it's can auth it. It's not firewall block it. So I need notification admin user when it's failed.
What log path do you want see?
I've written a php file which leaves me the status for Let's Encrypt of each domain and every week sends me a report via email.
So I know that I have to do something there.
The file is called by CronJob every week.
Here is the report from today.
An unexpected error occurred: SSLError: ("bad handshake: SysCallError(104, 'ECONNRESET')",) Please see the logfiles in /var/log/letsencrypt for more details. at /var/www/imscp/gui/plugins/LetsEncrypt/backend/LetsEncrypt.pm line 832.