Two-phase queue run perf: parallel processes for phase one

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

diff --git a/src/README.UPDATING b/src/README.UPDATING
index b619f5e03851ff31f94867e721674ed9436ad2a6..94a1420eb7aa73d0cacadc75c6aa196621e301f3 100644 (file)
--- a/src/README.UPDATING
+++ b/src/README.UPDATING
@@ -26,6 +26,49 @@ The rest of this document contains information about changes in 4.xx releases
 that might affect a running system.
 
 
+Exim version 4.94
+-----------------
+
+Some Transports now refuse to use tainted data in constructing their delivery
+location; this WILL BREAK configurations which are not updated accordingly.
+
+In particular: any Transport use of $local_user which has been relying upon
+check_local_user far away in the Router to make it safe, should be updated to
+replace $local_user with $local_part_verified.
+
+
+Exim version 4.93
+-----------------
+
+For a detailed list of changes that might affect Exim's operation with
+an unchanged configuration, please see the doc/ChangeLog file.
+
+Build:
+
+ * SUPPORT_DMARC replaces EXPERIMENTAL_DMARC
+
+ * DISABLE_TLS replaces SUPPORT_TLS
+
+ * Bump the version for the local_scan API.
+
+Runtime:
+
+ * smtp transport option hosts_try_fastopen defaults to "*".
+
+ * DNSSec is requested (not required) for all queries. (This seemes to
+   ask for trouble if your resolver is a systemd-resolved.)
+
+ * Generic router option retry_use_local_part defaults to "true" under specific
+   pre-conditions.
+
+ * Introduce a tainting mechanism for values read from untrusted sources.
+
+ * Use longer file names for temporary spool files (this avoids
+   name conflicts with spool on a shared file system).
+
+ * Use dsn_from main config option (was ignored previously).
+
+
 Exim version 4.92
 -----------------