The use of forbid_filter_existstest now also locks out ${stat:

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

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index 7ac53952d86965bc33f9a3791ecb33615a740855..f358f7a4871ef5f6ff3ef1829a40c5b8ee2aeefc 100644 (file)
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.52 2005/06/22 10:17:22 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.59 2005/08/01 15:01:12 ph10 Exp $
 
 New Features in Exim
 --------------------
@@ -8,6 +8,51 @@ but have not yet made it into the main manual (which is most conveniently
 updated when there is a relatively large batch of changes). The doc/ChangeLog
 file contains a listing of all changes, including bug fixes.
 
+Exim version 4.53
+-----------------
+
+TK/01 Added the "success_on_redirect" address verification option. When an
+      address generates new addresses during routing, Exim will abort
+      verification with "success" when more than one address has been
+      generated, but continue to verify a single new address. The latter
+      does not happen when the new "success_on_redirect" option is set, like
+
+      require verify = recipient/success_on_redirect/callout=10s
+
+      In that case, verification will succeed when a router generates a new
+      address.
+
+PH/01 Support for SQLite database lookups has been added. This is another
+      query-style lookup, but it is slightly different from the others because
+      a file name is required in addition to the SQL query. This is because an
+      SQLite database is a single file and there is no daemon as in other SQL
+      databases. The interface to Exim requires the name of the file, as an
+      absolute path, to be given at the start of the query. It is separated
+      from the query by white space. This means that the path name cannot
+      contain white space. Here is a lookup expansion example:
+
+        ${lookup sqlite {/some/thing/sqlitedb \
+          select name from aliases where id='ph10';}}
+
+      In a list, the syntax is similar. For example:
+
+        domainlist relay_domains = sqlite;/some/thing/sqlitedb \
+           select * from relays where ip='$sender_host_address';
+
+      The only character affected by the ${quote_sqlite: operator is a single
+      quote, which it doubles.
+
+      Note that you must set LOOKUP_SQLITE=yes in Local/Makefile in order to
+      obtain SQLite support, and you will also need to add -lsqlite3 to the
+      EXTRALIBS setting. And of course, you have to install SQLite on your
+      host first.
+
+PH/02 The variable $message_id is now deprecated, to be replaced by
+      $message_exim_id, which makes it clearer which ID is being referenced.
+
+PH/03 The use of forbid_filter_existstest now also locks out the use of the
+      ${stat: expansion item.
+
 
 Exim version 4.52
 -----------------
@@ -150,6 +195,12 @@ TF/04 There is a new ratelimit ACL condition which can be used to measure
       example, you can limit the sending rate of each authenticated user,
       independent of the computer they are sending from, by setting the key
       to $authenticated_id. The default key is $sender_host_address.
+      Internally, Exim includes the smoothing constant p and the options in
+      the lookup key because they alter the meaning of the stored data.
+      This is not true for the limit m, so you can alter the configured
+      maximum rate and Exim will still remember clients' past behaviour,
+      but if you alter the other ratelimit parameters Exim will effectively
+      forget their past behaviour.
 
       Each ratelimit condition can have up to two options. The first option
       specifies what Exim measures the rate of, and the second specifies how
@@ -235,6 +286,14 @@ TF/04 There is a new ratelimit ACL condition which can be used to measure
                         cdb {DB/ratelimits.cdb} \
                         {$value} {RATELIMIT} }
 
+      Warning: if you have a busy server with a lot of ratelimit tests,
+      especially with the per_rcpt option, you may suffer from a performance
+      bottleneck caused by locking on the ratelimit hints database. Apart from
+      making your ACLs less complicated, you can reduce the problem by using a
+      RAM disk for Exim's hints directory, /var/spool/exim/db/. However this
+      means that Exim will lose its hints data after a reboot (including retry
+      hints, the callout cache, and ratelimit data).
+
 TK/01 Added an 'spf' lookup type that will return an SPF result for a given
       email address (the key) and an IP address (the database):
 
@@ -384,6 +443,13 @@ PH/05 There is now a new ${if condition called "match_ip". It is similar to
         You do need to specify the "net-" prefix if you want to specify a
         specific address mask, for example, by using "net24-".
 
+PH/06 The "+all" debug selector used to set the flags for all possible output;
+      it is something that people tend to use semi-automatically when
+      generating debug output for me or for the list. However, by including
+      "+memory", an awful lot of output that is very rarely of interest was
+      generated. I have changed this so that "+all" no longer includes
+      "+memory". However, "-all" still turns everything off.
+
 
 Version 4.51
 ------------