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[users/jgh/exim.git] / src / README.UPDATING

diff --git a/src/README.UPDATING b/src/README.UPDATING
index fe405106b76acd3556d1db3a906a899cc8b497b2..efc123c15f4387a0187e4e1a75f5ff27e0c310f0 100644 (file)
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@@ -1,4 +1,4 @@
-$Cambridge: exim/src/README.UPDATING,v 1.1 2004/10/06 14:12:40 ph10 Exp $
+$Cambridge: exim/src/README.UPDATING,v 1.7 2005/04/28 13:06:32 ph10 Exp $
 
 This document contains detailed information about incompatibilities that might
 be encountered when upgrading from one release of Exim to another. The
@@ -28,6 +28,43 @@ The rest of this document contains information about changes in 4.xx releases
 that might affect a running system.
 
 
+Version 4.51
+------------
+
+1. The format in which GnuTLS parameters are cached (in the file gnutls-params
+in the spool directory) has been changed. The new format can also be generated
+externally, so it is now possible to update the values from outside Exim. This
+has been implemented in an upwards, BUT NOT downwards, compatible manner.
+Upgrading should be seamless: when Exim finds that it cannot understand an
+existing cache file, it generates new parameters and writes them to the cache
+in the new format. If, however, you downgrade from 4.51 to a previous release,
+you MUST delete the gnutls-params file in the spool directory, because the
+older Exim will not recognize the new format.
+
+2. When doing a callout as part of verifying an address, Exim was not paying
+attention to any local part prefix or suffix that was matched by the router
+that accepted the address. It now behaves in the same way as it does for
+delivery: the affixes are removed from the local part unless
+rcpt_include_affixes is set on the transport. If you have a configuration that
+uses prefixes or suffixes on addresses that could be used for callouts, and you
+want the affixes to be retained, you must make sure that rcpt_include_affixes
+is set on the transport.
+
+3. Bounce and delay warning messages no longer contain details of delivery
+errors, except for explicit messages (e.g. generated by :fail:) and SMTP
+responses from remote hosts.
+
+
+Version 4.50
+------------
+
+The exicyclog script has been updated to use three-digit numbers in rotated log
+files if the maximum number to keep is greater than 99. If you are already
+keeping more than 99, there will be an incompatible change when you upgrade.
+You will probably want to rename your old log files to the new form before
+running the new exicyclog.
+
+
 Version 4.42
 ------------