On 12/1/21 10:10, Ludovic Bellière via Dng wrote:
> 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 4.94.2-7
>> installed.  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
I looked into some of the other options and I do not recall why I 
decided against them.  It may have been when I thought that I was going 
to use the MTA for more than just local mail.
In any case, I have run `dpkg-reconfigure exim4-config' using the 
defaults from when I set it up originally.  I am hoping that doing so 
with the new exim4 installed will correct the configuration issues.
When I ran `dpkg-reconfigure exim4-config' I got the error about the 
paniclog being non-zero size, but I expected that.  I truncated the 
paniclog and ran `dpkg-reconfigure exim4-config' again, this time with 
no errors.
I have sent myself an e-mail from 'root' but have not received it.  I 
will probably try shutting down the system and rebooting, to see if that 
gets things back in order after the reconfig.
Marc