[exim] Configuring for non-encrypted MUA to localhost. TLS-…

Hi,

Debian 11 here with exim4 4.94.2-7.

On the localhost, the MUA needs a non-encrypted
connection on port 25 to exim.

Exim to remote smarthost is TLS-on-connect with AUTH
PLAIN. The connection was verified with this command.
$ openssl s_client -crlf -connect mail.easthope.ca:465

How should this be configured?

Thx,                               ... P.