exim4 - 4.92-8+deb10u6 main

Exim (v4) is a mail transport agent. exim4 is the metapackage depending
on the essential components for a basic exim4 installation.
.
The Debian exim4 packages have their own web page,
http://wiki.debian.org/PkgExim4. There is also a Debian-specific
FAQ list. Information about the way the Debian packages are
configured can be found in
/usr/share/doc/exim4-base/README.Debian.gz, which additionally contains
information about the way the Debian binary packages are built. The
very extensive upstream documentation is shipped in
/usr/share/doc/exim4-base/spec.txt.gz. To repeat the debconf-driven
configuration process in a standard setup, invoke dpkg-reconfigure
exim4-config. There is a Debian-centered mailing list,
pkg-exim4-users@lists.alioth.debian.org. Please ask Debian-specific
questions there, and only write to the upstream exim-users mailing
list if you are sure that your question is not Debian-specific. You
can find the subscription web page on
http://lists.alioth.debian.org/mailman/listinfo/pkg-exim4-users