I'd like my TLS certificate paths to be dynamic and based on
primary_hostname. They're currently defined as such:
tls_privatekey = /etc/letsencrypt/live/${primary_hostname}/privkey.pem
This works fine *if* primary_hostname is defined with a string literal.
primary_hostname = smtp.mydomain.com
But I need primary_hostname to be dynamic, say read from a file.
primary_hostname = ${readfile{/etc/mailname}{}}
But when configured this way, TLS connections fail because the readfile is
included in the certificate path, so it's not actually a path. TLS
connection failure error messages include:
key=/etc/letsencrypt/live/${readfile{/etc/mailname}}/privkey.pem
Is what I'm trying to achieve possible? Like, is there a way to force
immediate expansion of the ${readfile{/etc/mailname}{}} assignment so
primary_hostname is considered a string literal by the rest of the
configuration?
My environment:
$ exim --version
Exim version 4.95 #2 built 23-Nov-2022 15:53:26
$ exim -be '${primary_hostname}'
${readfile{/etc/mailname}{}}
$ exim -be '${readfile{/etc/mailname}{}}'
smtp.mydomain.com
Thanks!
Lance