Flush SMTP before callout (unless control=no_callout_flush).

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

diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff
index ff72f6fa68495ef6fa442fb40a9a964c55f030ad..b05db458aacb4e393116e2e0b830fa987dbba940 100644 (file)
--- a/doc/doc-txt/NewStuff
+++ b/doc/doc-txt/NewStuff
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.136 2007/02/06 10:00:24 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.138 2007/02/06 12:19:27 ph10 Exp $
 
 New Features in Exim
 --------------------
@@ -233,8 +233,12 @@ Version 4.67
     time and date.
 
 11. Exim has been modified so that it flushes SMTP output before implementing
-    a delay in an ACL. This behaviour can be disabled by obeying control =
-    no_delay_flush at some earlier point.
+    a delay in an ACL. It also flushes the output before performing a callout,
+    as this can take a substantial time. These behaviours can be disabled by
+    obeying control = no_delay_flush or control = no_callout_flush,
+    respectively, at some earlier stage of the connection. The effect of the
+    new default behaviour is to disable the PIPELINING optimization in these
+    situations, in order to avoid unexpected timeouts in clients.
 
 12. There are two new expansion conditions that iterate over a list. They are
     called forany and forall, and they are used like this:
@@ -268,6 +272,16 @@ Version 4.67
     Its value is saved and restored while forany/forall is being processed, to
     enable these expansion items to be nested.
 
+13. There's a new global option called dsn_from that can be used to vary the
+    contents of From: lines in bounces and other automatically generated
+    messages ("delivery status notifications" - hence the name of the option).
+    The default setting is:
+
+      dsn_from = Mail Delivery System <Mailer-Daemon@$qualify_domain>
+
+    The value is expanded every time it is needed. If the expansion fails, a
+    panic is logged, and the default setting is used.
+
 
 Version 4.66
 ------------