3CX Phone System - Lets Encrypt SSL certificate Renewed FAIL

[techdummy]

I've been getting this notification via E-mail :

Lets Encrypt SSL certificate was failed to renew. Error: PostInstall.LetsEncrypt.LetsEncryptRegistrationException: Network error
at PostInstall.CertificateHelper.ProcessCertificatesDirectory(String directory, CloudServerStatus statuses, String appBin)
at PostInstall.CertificateHelper.RenewCertificates(String appBin, String nginxConfigFolder, String configurationPath)

What should I do?

 

[YiannisH_3CX]

Hello @techdummy

Please make sure that the PBX can resolve activation.3cx.com and letsencrypt.com.
You could also try using 8.8.8.8 as your DNS server to see if that resolves your issue. Also make sure that your OS is up to date.