TLS certificate directory

[msimerson]

Extracting from #1800

TLS cert management

I want a TLS setting like haproxy: listen 587 ssl cert /etc/certs, where /etc/certs is a directory filled with .pem files like

• mail.example.com.pem
• mail.example2.com.pem
• ...

Each file is self-contained with the key, cert, and intermediates all concatenated. SNI is going to be a nightmare without this.

This makes SNI & Let's Encrypt (or any other automated provisioning) integration really easy as automated processes can just install the newly provisioned certs into the Haraka config directory.