If you do not need your mail system to talk to the world, then you should replace exim with something that is a lot simpler to use and configure. I would suggest msmtp (https://marlam.de/msmtp/) as its configuration is a lot more simpler to the neophyte. If you want to keep exim4, I would then suggest to nuke the existing configuration and start from scratch with `dpkg-reconfigure exim4-config'. Extended information should be available at https://wiki.debian.org/Exim
Exim4 being a software designed to handle large amount of emails, it may be out
of scope for your personal usage. While, as I said, msmtp is a lot more
accessible through its minimalist approach: you only need a file with a dozen of
lines for it to function properly.
While I do use it, I wouldn't be able to help you with exim4, the software is
way too large and complex for my own understanding. I mainly rely on
dpkg-reconfigure and hope nothing breaks. And while msmtp is easier to
understand, changing software can itself be a source of immeasurable pain. So,
if in doubt, you should probably rely on dpkg-reconfigure.
Cheers,
Ludovic
On Wed, 01 Dec 2021, Marc Shapiro via Dng wrote:
This is very likely the problem, as I now have version 4.94.2-7installed. I know virtually nothing, however, about how MTAs do their work. Where and how do I make these config changes. I use Thunderbird for mail coming from outside the local network. Exim is only used for local transport (such as e-mail from cron jobs).Marc
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