-$Cambridge: exim/doc/doc-txt/NewStuff,v 1.136 2007/02/06 10:00:24 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/NewStuff,v 1.139 2007/02/06 14:49:13 ph10 Exp $
New Features in Exim
--------------------
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:
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.
+
+14. The smtp transport has a new option called hosts_avoid_pipelining. It can
+ be used to suppress the use of PIPELINING to certain hosts, while still
+ supporting the other SMTP extensions (cf hosts_avoid_tls).
+
Version 4.66
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git://git.exim.org / exim.git / blobdiff