Re-jigged the order of the tests in the default configuration so that

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

diff --git a/doc/doc-misc/WishList b/doc/doc-misc/WishList
index 3f70a9d643a3ae8b45f715f4e2c8ba6f31177a5c..7fadb1ee326d7180b49c10ee06f6028cde7be8ad 100644 (file)
--- a/doc/doc-misc/WishList
+++ b/doc/doc-misc/WishList
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-misc/WishList,v 1.64 2006/03/08 09:43:10 ph10 Exp $
+$Cambridge: exim/doc/doc-misc/WishList,v 1.69 2006/06/30 08:53:49 ph10 Exp $

 
 EXIM 4 WISH LIST
 ----------------
 
 EXIM 4 WISH LIST
 ----------------


@@ -295,16 +295,6 @@ David Carter
 So several warnings could be generated as the mailbox got bigger and bigger.
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 So several warnings could be generated as the mailbox got bigger and bigger.
 ------------------------------------------------------------------------------
 

-(146) 15-May-2000 M  Allow SMTP error codes in retry rules
-
-This would allow special handling of certain errors from certain hosts. In
-particular, it would allow failing of certain 4xx codes.
-
-This is now available for 4xx responses to RCPT commands. Is anything more
-needed? Apparently, yes; there's been a request for a similar feature for MAIL
-commands.
-------------------------------------------------------------------------------
-

 (148) 15-May-2000 S  Warn recipient if message rejected for quota excession.
 Heinz Ekker
 
 (148) 15-May-2000 S  Warn recipient if message rejected for quota excession.
 Heinz Ekker
 


@@ -1255,11 +1245,6 @@ This is an option that turns all hard bounces into soft bounces. The idea is
 that it can be used as a safety-net while testing configurations. Instead of a
 local bounce, the message stays on the queue; instead of 5xx SMTP responses,
 4xx ones are given.
 that it can be used as a safety-net while testing configurations. Instead of a
 local bounce, the message stays on the queue; instead of 5xx SMTP responses,
 4xx ones are given.

-
-The ability to do the opposite - turn 4xx into 5xx under certain circumstances
-might also be useful (e.g. after a certain time). This might best be done by
-extending the retry logic to recognize 4xx as a special error. (This is now
-done.)

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 (202) 10-Oct-03 S  -bvsomething to do a callout after the verify
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 (202) 10-Oct-03 S  -bvsomething to do a callout after the verify


@@ -1297,7 +1282,6 @@ permanent ones after some fixed time.
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 (209) 31-Oct-03 S  a way of making crashes in pipe commands temporary errors
 ------------------------------------------------------------------------------
 
 (209) 31-Oct-03 S  a way of making crashes in pipe commands temporary errors

-

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 (210) 31-Oct-03 S  runtime option to change the daemon name used for tcprwappers
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 (210) 31-Oct-03 S  runtime option to change the daemon name used for tcprwappers


@@ -1330,13 +1314,6 @@ e.g. exigrep, eximstats, will be automatically handled if the logs are
 changed.)
 ------------------------------------------------------------------------------
 
 changed.)
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-(216) 27-Nov-03 S  Option to bounce if required TLS doesn't happen
-
-This is for the smtp transport with hosts_require_tls set. Currently, it
-defers. Possibly the best approach is to make the error one that can be seen by
-the retry logic.
-------------------------------------------------------------------------------
-

 (217) 27-Nov-03 M  A function to pass back variables from Perl
 
 This is a function that can be called from Perl, to take a name and a value and
 (217) 27-Nov-03 M  A function to pass back variables from Perl
 
 This is a function that can be called from Perl, to take a name and a value and


@@ -1602,12 +1579,6 @@ For example: mainlog_selector and rejectlog_selector, with log_selector setting
 both of them.
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 both of them.
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-(286) 21-Jul-04 M Distinguishing a larger number of errors
-
-For instance, detecting "connection reset by peer" (ENETRESET or ECONNRESET)
-might be useful.
-------------------------------------------------------------------------------
-

 (288) 10-Aug-04 M Option for verify to require MX
 
 e.g. verify=sender/require_mx
 (288) 10-Aug-04 M Option for verify to require MX
 
 e.g. verify=sender/require_mx


@@ -2019,9 +1990,66 @@ code, because of caching. Probably means we have to invent ewildlsearch and
 enwildlsearch.
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 enwildlsearch.
 ------------------------------------------------------------------------------
 

-(350) 28-Feb-06 S Additional errors for retry rules
+(351) 31-Mar-06 ? Allow some/all/a few internal variables to be set
+
+The original idea was to allow "set authenticated = x" to pretend a connection
+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.
+------------------------------------------------------------------------------
+
+(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

 
 

-(i) Unexpected connection close; (ii) mail_4xx.
+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.

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---- HWM 350 ------------------------------------------------------------------
+--- HWM 355 ------------------------------------------------------------------

 ---------------------------- End of WishList ---------------------------------
 ---------------------------- End of WishList ---------------------------------