"Could not connect to smtpout.secureserver.net - neither TLS nor STARTTLS worked" }

[tarnishablec]

After migrate to 0.31.3, I can not receive registration email

I have TLS certificates using Certbot in host machine, and here is my config

and logs

[tarnishablec]

I changed cert_path from fullchain.pem to cert.pem,still got issue

[sebadob]

I changed cert_path from fullchain.pem to cert.pem,still got issue

Of course you still have it, because the SMTP error has nothing to do with your TLS certificate. It's about your outgoing SMTP connection which cannot be established.

Just reading the logs shows the issue very clearly: Authentication failed when trying to establish the SMTP connection.