Routing: avoid doing the one_time replacement operation when a redirect leaves the...

[exim.git] / doc / doc-misc / WishList

diff --git a/doc/doc-misc/WishList b/doc/doc-misc/WishList
index e861cf89ea5fd574eda90806be29d92eb67fd6de..e266116eabe7ad6b43edb20e395f21389bc8dc14 100644 (file)
--- a/doc/doc-misc/WishList
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@@ -1,8 +1,12 @@
-$Cambridge: exim/doc/doc-misc/WishList,v 1.66 2006/03/31 08:37:47 ph10 Exp $
-
 EXIM 4 WISH LIST
 ----------------
 
+This Wish List is now obsolete. The items it contains have been imported into
+the Exim Bugzilla, which is where all new wishes should be added. This file is
+no longer maintained. Some day it should be deleted.
+
+
+===============================================================================
 Even when it was first released, Exim 4 had a Wish List because not all the
 things suggested for it were implemented. The list has not stopped growing...
 
@@ -1997,5 +2001,59 @@ is authenticated after other conditions are true. This can, of course, be
 packaged up using macros in other ways. Setting other variables could cause
 problems.
 ------------------------------------------------------------------------------
---- HWM 351 ------------------------------------------------------------------
+
+(352) 04-Apr-06 S Add +accept_defer for host lists (and maybe others)
+
+At present, a defer causes a delivery defer. For non-critical ACLs there are
+times when it may be better to accept. See also 226 and 289.
+------------------------------------------------------------------------------
+
+(354) 30-Jun-06 ? Extensions to SMTP error codes
+
+A number of ideas arose following a discussion on the mailing list. I record
+them here so that they don't get lost. The motivations were to support the 551
+bounce code and enhanced status codes. Suggestions are to add a new ACL
+feature, possibly one of:
+
+  errorcode = 511
+  control = errorcode=551
+  message = 551 xxxx
+
+where in the last case, it's recognized by being 3 digits. In all cases, the
+first digit must be "right" for the circumstance - ignore or fault if not?
+
+To handle ESC, perhaps a new variable called $smtp_errorcode, settable by an
+option in a router when it fails, would do the trick. It could be used in any
+of the above modifiers.
+------------------------------------------------------------------------------
+
+(355) 30-Jun-06 ? Facility to permit experiments with SMTP extensions
+
+This is what was suggested:
+
+- adding some expansion variables: $ehlo_extensions (which will
+   hold the remote server supported smtp extensions announced
+   in the ehlo) and $rcpt_arguments with any RCPT extra argument
+
+- a main configuration option for adding ehlo extensions to the
+   ehlo response, like:
+
+   extra_ehlo_extensions = XFOO : XBAR
+
+- a extra option for the smtp transport to add arguments to
+   the RCPT TO command, like:
+
+   rcpt_args = FOO=BAR  (will make exim issue RCPT TO:<a@b.c> FOO=BAR
+   when delivering that message)
+
+- a new acl for unknown smtp commands
+
+This should be very simple to implement and will allow to make
+some experiments and implement custom extensions, i.e. one to
+known if remote client will redirect on 551 or not. Also the acl
+for unknown smpt command could be used for other purposes, like
+to dectect and react to some kiddies that send things like
+http://... on the smtp port.
+------------------------------------------------------------------------------
+--- HWM 355 ------------------------------------------------------------------
 ---------------------------- End of WishList ---------------------------------