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services.postfix.settings.main.smtpd_tls_chain_files

List of paths to the server private keys and certificates.

The order of items matters and a private key must always be followed by the corresponding certificate.

https://www.postfix.org/postconf.5.html#smtpd_tls_chain_files.

Declarations
Type
list of absolute path
Default
[ ]
Example
[
  "/var/lib/acme/mail.example.com/privkey.pem"
  "/var/lib/acme/mail.example.com/fullchain.pem"
]