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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>4.01</b>. This is a major upgrade
12 which will require configuration files to be rewritten (there
13 are tools to help with this). As an early release of a major
14 new version cautious users may wish to test carefully before
15 moving to production services. <b>4.01</b> is a bug fix release
18 <p>The latest 3.x release is <b>3.35</b>. This is the latest bug fix
19 release in the 3.3x series. They are an incremental upgrade over
20 the 3.2x series with a few new features. There is a security
21 issue (rare but exploitable) with versions previous to 3.34
22 so upgrading is <b>strongly</b> recommended.
23 Old 3.0x configuration files should be fully compatible.
24 New features are documented in the CHANGES and NewStuff files.</p>
26 <p>The previous 3.2x release is <b>3.22</b>. This is an
27 incremental upgrade with a small number of new features and some
28 bug fixes, however old 3.0x configuration files should be fully
29 compatible. New features are documented in the CHANGES and
30 NewStuff files Upgrading from previous releases is worth doing,
31 particularly since a denial-of-service hole has been fixed over
32 3.0x and lower versions.</p>
34 <p>There were a number of early beta versions of exim with version
35 numbers less than <b>1.0</b>. These should now be avoided.
36 Versions earlier than <b>2.0x</b> should also be upgraded.
37 Version 3.0x and 3.1x releases are also best upgraded.</p>
39 <p>There may be beta versions with available from the ftp sites in
40 the Testing directory. Many people are using these without
41 problems, but they are not recommended unless you are willing to
42 work with beta software.</p>
45 <address><a href="mailto:Postmaster@exim.org">Nigel Metheringham</a></address>
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