Bug#930083: Conflict between exim4-config and ssmtp in Debian Stretch

[Andreas Metzler]

On 2019-06-06 Sébastien Santoro <dereckson at espace-win.org> wrote:
> Package: exim4-config
> Version: 4.89-2+deb9u4

> It's not possible anymore to install exim4-config and ssmtp on the
> same server.

> $ apt install exim4-config ssmtp
> …
> The following packages have unmet dependencies:
>  exim4-config : Conflicts: ssmtp but 2.64-8+b2 is to be installed
> …

> This issue appeared between 2019-06-05 and 2019-06-06.

Hello,

During this time the security update 4.89-2+deb9u4 was released which
includes the abovementioned conflict:
ametzler at argenau:/tmp$ dpkg --info exim4-config_4.89-2+deb9u4_all.deb | grep ^\ C
 Conflicts: courier-mta, esmtp-run, exim, exim-tls, exim4-config, exim4-config-2, hula-mta, masqmail, mta-dummy, nullmailer, postfix, sendmail-bin, smail, ssmtp, xmail, zmailer

However this 'Conflicts' is not new, it has been around forever. I have
just checked my local archive of packages and even the earliest one 
(4.69-6 which was uploaded 10 years ago) conflicts with ssmtp.

cu Andreas

-- 
`What a good friend you are to him, Dr. Maturin. His other friends are
so grateful to you.'
`I sew his ears on from time to time, sure'