Doc: Clarify variables for spf_smtp_comment_template

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

diff --git a/src/README.UPDATING b/src/README.UPDATING
index db754da408a434654c75627f29f2f15cec62c007..a0afa8df0679945688becabca0c5c21736423910 100644 (file)
--- a/src/README.UPDATING
+++ b/src/README.UPDATING
@@ -25,6 +25,23 @@ there have been two big upheavals...
 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_data.
+
+Attempting to remove, in router or transport, a header name that ends with
+an asterisk (which is a standards-legal name) will now result in all headers
+named starting with the string before the asterisk being removed.  We recommend
+staying away from such names, if they are private ones (and in case of future
+enhancements, alao header names that look like REs).
+
+
 Exim version 4.93
 -----------------