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

[Sébastien Santoro]

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.