exim_convert4r4 - Convert Exim configuration from v3 to v4 format
This script is provided to assist in updating Exim configuration files. It reads
an Exim 3 configuration file on the standard input, and writes a modified file
on the standard output. It also writes comments about what it has done to the
standard error file. It assumes that the input is a valid Exim 3 configuration
file. A typical call to the conversion script might be
exim_convert4r4 < /etc/exim/exim.conf > /etc/exim4/exim4.conf.new
The output file MUST
be checked and tested before trying to use it on a
live system. The conversion script is just an aid which does a lot of the
“grunt work”. It does not guarantee to produce an Exim 4
configuration that behaves exactly the same as the Exim 3 configuration it
Each option change in the new file is preceded by an identifying comment. In
fact, the conversion script tends to make quite a mess of your configuration,
and you should expect to go through it afterwards and tidy it up by hand.
Unless you are running a very straightforward configuration, the automatic
conversion is likely to generate a non-optimal configuration. You should not
only check it thoroughly, but also run as many tests as you can, to ensure
that it is working as you expect. In particular, you should test address
routing, using -bt and -bv, and the policy controls, using -bh. If possible,
you should also do some live tests (i.e. send and receive some messages)
before putting Exim 4 into service.
If you have a very complicated configuration, it is possible that
exim_convert4r4 will break it in some situations, which is why thorough
testing is strongly recommended.
This manual page needs a major re-work. If somebody knows better groff than us
and has more experience in writing manual pages, any patches would be greatly
(8), the files in /usr/share/doc/exim4-base/, especially
This manual page was stitched together from Exim4.upgrade by Andreas Metzler
<ametzler at downhill.at.eu.org>, for the Debian GNU/Linux system (but
may be used by others).