Michael Haardt's randomized retry stuff, using the new letter "H".

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

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index 15cf0b44d8e2ede0b63553439588ad0092aaea34..4640547aed7311d0b86c598243c59554af80ad6e 100644 (file)
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.67 2005/09/12 10:08:53 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.72 2005/09/19 11:56:11 ph10 Exp $
 
 New Features in Exim
 --------------------
@@ -104,7 +104,7 @@ PH/06 It is now possible to specify a port number along with a host name or
 
 PH/07 $smtp_command_argument is now set for all SMTP commands, not just the
       non-message ones. This makes it possible to inspect the complete command
-      for RCPT commands, for example.
+      for RCPT commands, for example. But see also PH/45 below.
 
 PH/08 The ${eval expansion now supports % as a "remainder" operator.
 
@@ -142,6 +142,29 @@ PH/10 There is a new ACL control called "suppress_local_fixups". This applies
       (3) Remotely submitted, no fixups applied: the default.
       (4) Remotely submitted, fixups applied: use control = submission.
 
+PH/11 There is a new log selector, "unknown_in_list", which provokes a log
+      entry when the result of a list match is failure because a DNS lookup
+      failed.
+
+PH/12 There is a new variable called $smtp_command which contains the full SMTP
+      command (compare $smtp_command_argument - see PH/07 above). This makes it
+      possible to distinguish between HELO and EHLO, and also between things
+      like "MAIL FROM:<>" and "MAIL FROM: <>".
+
+TF/01 There's a new script in util/ratelimit.pl which extracts sending
+      rates from log files, to assist with choosing appropriate settings
+      when deploying the ratelimit ACL condition.
+
+PH/13 A new letter, "H", is available in retry parameter sets. It is similar
+      to "G" (geometric increasing time intervals), except that the interval
+      before the next retry is randomized. Each time, the previous interval is
+      multiplied by the factor in order to get a maximum for the next interval.
+      The mininum interval is the first argument of the parameter, and an
+      actual interval is chosen randomly between them. Such a rule has been
+      found to be helpful in cluster configurations when all the members of the
+      cluster restart at once, and may synchronize their queue processing
+      times.
+
 
 Exim version 4.52
 -----------------
@@ -278,7 +301,7 @@ TF/04 There is a new ratelimit ACL condition which can be used to measure
       rate limit. Conversely, if m and p are both small then messages must be
       sent at an even rate.
 
-      The key is used to look up the data used to calcluate the client's
+      The key is used to look up the data used to calculate the client's
       average sending rate. This data is stored in a database maintained by
       Exim in its spool directory alongside the retry database etc. For
       example, you can limit the sending rate of each authenticated user,
@@ -293,7 +316,8 @@ TF/04 There is a new ratelimit ACL condition which can be used to measure
 
       Each ratelimit condition can have up to two options. The first option
       specifies what Exim measures the rate of, and the second specifies how
-      Exim handles excessively fast clients.
+      Exim handles excessively fast clients. The options are separated by a
+      slash, like the other parameters.
 
       The per_mail option means that it measures the client's rate of sending
       messages. This is the default if none of the per_* options is specified.