Installed PCRE 7.2 into Exim.

[exim.git] / doc / doc-txt / NewStuff

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index 70da9ace2b207baadc738b34487a509afaf35294..f61b1f7a3b55168e729bcfbf0bd74a5ab2ebb5de 100644 (file)
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.150 2007/06/19 14:41:31 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.153 2007/06/26 09:23:34 ph10 Exp $

 
 New Features in Exim
 --------------------
 
 New Features in Exim
 --------------------


@@ -47,6 +47,41 @@ Version 4.68
     message to the standard output, in RFC 2822 format. The option can be used
     only by an admin user.
 
     message to the standard output, in RFC 2822 format. The option can be used
     only by an admin user.
 

+ 5. There is now a /noupdate option for the ratelimit ACL condition. It
+    computes the rate and checks the limit as normal, but it does not update
+    the saved data. This means that, in relevant ACLs, it is possible to lookup
+    the existence of a specified (or auto-generated) ratelimit key without
+    incrementing the ratelimit counter for that key.
+
+    In order for this to be useful, another ACL entry must set the rate
+    for the same key somewhere (otherwise it will always be zero).
+
+    Example:
+
+    acl_check_connect:
+      # Read the rate; if it doesn't exist or is below the maximum
+      # we update it below
+      deny ratelimit = 100 / 5m / strict / noupdate
+           log_message = RATE: $sender_rate / $sender_rate_period \
+                         (max $sender_rate_limit)
+
+      [... some other logic and tests...]
+
+      warn ratelimit = 100 / 5m / strict / per_cmd
+           log_message = RATE UPDATE: $sender_rate / $sender_rate_period \
+                         (max $sender_rate_limit)
+           condition = ${if le{$sender_rate}{$sender_rate_limit}}
+
+      accept
+
+ 6. The variable $max_received_linelength contains the number of bytes in the
+    longest line that was received as part of the message, not counting the
+    line termination character(s).
+
+ 7. Host lists can now include +ignore_defer and +include_defer, analagous to
+    +ignore_unknown and +include_unknown. These options should be used with
+    care, probably only in non-critical host lists such as whitelists.
+

 
 Version 4.67
 ------------
 
 Version 4.67
 ------------