-$Cambridge: exim/src/README.UPDATING,v 1.13 2006/09/25 11:25:37 ph10 Exp $
+$Cambridge: exim/src/README.UPDATING,v 1.16 2007/06/20 14:19:23 ph10 Exp $
This document contains detailed information about incompatibilities that might
be encountered when upgrading from one release of Exim to another. The
that might affect a running system.
+Exim version 4.68
+-----------------
+
+1. The internal implementation of the database keys that are used for ACL
+ratelimiting has been tidied up. This means that an update to 4.68 might cause
+Exim to "forget" previous rates that it had calculated, and reset them to zero.
+
+
Exim version 4.64
-----------------
addresses), $smtp_active_hostname is used. This change is mentioned here in
case somebody is relying on the use of $smtp_active_hostname.
+2. A bug has been fixed that might just possibly be something that is relied on
+in some configurations. In expansion items such as ${if >{xxx}{yyy}...} an
+empty string (that is {}) was being interpreted as if it was {0} and therefore
+treated as the number zero. From release 4.64, such strings cause an error
+because a decimal number, possibly followed by K or M, is required (as has
+always been documented).
+
+3. There has been a change to the GnuTLS support (ChangeLog/PH/20) to improve
+Exim's performance. Unfortunately, this has the side effect of being slightly
+non-upwards compatible for versions 4.50 and earlier. If you are upgrading from
+one of these earlier versions and you use GnuTLS, you must remove the file
+called gnutls-params in Exim's spool directory. If you don't do this, you will
+see this error:
+
+ TLS error on connection from ... (DH params import): Base64 decoding error.
+
+Removing the file causes Exim to recompute the relevant encryption parameters
+and cache them in the new format that was introduced for release 4.51 (May
+2005). If you are upgrading from release 4.51 or later, there should be no
+problem.
+
Exim version 4.63
-----------------
git://git.exim.org / users / jgh / exim.git / blobdiff