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 exim4/exim-html-n.nn.tar.gz HTML exim4/exim-pdf-n.nn.tar.gz PDF exim4/exim-postscript-n.nn.tar.gz PostScript exim4/exim-texinfo-n.nn.tar.gz TexInfo 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 exim4/exim-patch-n.nn-m.mm.gz 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 February 2002