This directory contains material pertaining to the Exim mail transport agent.
Exim is a mail transport agent (MTA) developed at the University of
Cambridge for use on Unix and Unix-like systems connected to the Internet. It
runs under all of the common flavours of Unix and GNU/Linux. It is freely
available under the terms of the GNU General Public Licence.
In February 2002, a major new version called Exim 4 was released. At this time,
Exim 3 was still widely used, but was no longer being developed. Files that are
part of Exim 3 are in the subdirectory called "exim3", and those that are part
of Exim 4 are in "exim4".
The current distribution of Exim 4 is the file
exim4/exim-n.nn.tar.gz gzipped tar file
where "n.nn" is the version number (e.g. "4.00"). A bzipped copy is also
provided. The distribution contains documentation in ASCII. Other documentation
formats are available in
and the equivalent bzipped files. These compressed tar files contain only the
doc directory, not the full distribution. The HTML tarball also contains a
snapshot of the FAQ. Patches to upgrade from one version of Exim to another may
be supplied, with names of the form
Such patches should always be applied as follows:
. unzip the patch file
. cd to a directory which contains the exim-n.nn directory
. run "patch -p0 <exim-patch-n.nn-m.mm"
*After* the patches have been applied, rename the exim-n.nn source directory as
The files exim4/FAQ.txt.gz and exim4/FAQ-html.tar.gz contain FAQ material in
plain ASCII and HTML formats, while exim4/config.samples.tar.gz is a directory
of sample configurations.
The exim4/Contrib subdirectory contains supporting files that have been
contributed to the Exim community by Exim users.
Distributions contained in the Testing subdirectory are intermediate versions
of Exim, usually with un-updated documentation, for specific testing purposes.
The people who are supposed to be doing the testing know who they are.