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4 <title>Versions of exim</title>
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8 <h1>Versions of exim</h1>
10 <p>The latest release is <b>4.02</b>. This is a major upgrade
11 over the 3.x versions which will require configuration files to be
12 rewritten (there are tools to help with this). As an early
13 release of a major new version cautious users may wish to test
14 carefully before moving to production services. <b>4.02</b> and
15 <b>4.01</b> are a bug fix releases over <b>4.00</b></p>
17 <p>The latest 3.x release is <b>3.35</b>. This is the latest bug fix
18 release in the 3.3x series. They are an incremental upgrade over
19 the 3.2x series with a few new features. There is a security
20 issue (rare but exploitable) with versions previous to 3.34
21 so upgrading is <b>strongly</b> recommended.
22 Old 3.0x configuration files should be fully compatible.
23 New features are documented in the CHANGES and NewStuff files.</p>
25 <p>The previous 3.2x release is <b>3.22</b>. This is an
26 incremental upgrade with a small number of new features and some
27 bug fixes, however old 3.0x configuration files should be fully
28 compatible. New features are documented in the CHANGES and
29 NewStuff files Upgrading from previous releases is worth doing,
30 particularly since a denial-of-service hole has been fixed over
31 3.0x and lower versions.</p>
33 <p>There were a number of early beta versions of exim with version
34 numbers less than <b>1.0</b>. These should now be avoided.
35 Versions earlier than <b>2.0x</b> should also be upgraded.
36 Version 3.0x and 3.1x releases are also best upgraded.</p>
38 <p>There may be beta versions with available from the ftp sites in
39 the Testing directory. Many people are using these without
40 problems, but they are not recommended unless you are willing to
41 work with beta software.</p>
44 <address><a href="mailto:Postmaster@exim.org">Nigel Metheringham</a></address>
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