Hello,

On Sat, Oct 01, 2022 at 08:05:34AM +0100, Chris Wallace via BitFolk Users wrote:
> Problem is that the default behaviour of exim4 is to use  (for root) an
> envelope-from address of
>
>  root@aremiti36.vps.bitfolk.com
>
> I added root:  chris@bristoltrees.space  to etc/email-addresses

Okay, that will work, not something I usually go for so don't know
the full repercussions (if any) though.

Normally if I want the base domain to be one thing but not the same
as the hostname, I set it in /etc/mailname. So,

$ sudo echo 'bristoltrees.space' | tee /etc/mailname

All unqualified addresses will then be @bristoltrees.space.

I then would have an entry in /etc/aliases for "root" to send it to
somewhere that I read; ultimately there will be a copy at
andy@bitfolk.com.

Another thing you might want to check out is what it is sending as
its hostname in HELO. If you need to set that you can do so either
in /etc/exim4/exim4.conf.localmacros for single file config or in
something like /etc/exim4/conf.d/main/000_my_localconfig (you'll be
creating this file and its name doesn't matter much). Contents:

MAIN_HARDCODE_PRIMARY_HOSTNAME = mail.bristoltrees.space

You'd then rebuild the config with:

$ sudo update-exim4.conf

I'm unsure if you'd have to restart the actual mail server after
this, but better safe than sorry so

$ sudo systemctl restart exim4

> only downside so far is that bounces go missing?

Well that shouldn't happen! Logs should tell why.

Cheers,
Andy

--
https://bitfolk.com/ -- No-nonsense VPS hosting
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