A new wish.

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

diff --git a/doc/doc-misc/WishList b/doc/doc-misc/WishList
index cc024fe40dedabd09f9069a3be15180b7bdafb4d..8ee2088592bab7548d9c46f1e2391480a2095f72 100644 (file)
--- a/doc/doc-misc/WishList
+++ b/doc/doc-misc/WishList
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-misc/WishList,v 1.13 2004/12/06 14:14:14 ph10 Exp $
+$Cambridge: exim/doc/doc-misc/WishList,v 1.20 2005/02/21 10:22:48 ph10 Exp $

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


@@ -577,15 +577,6 @@ size. Directory scanning is expensive; is there any scope for caching? It would
 seem not (you don't often get two addresses to the same user).
 ------------------------------------------------------------------------------
 
 seem not (you don't often get two addresses to the same user).
 ------------------------------------------------------------------------------
 

-(4)  01-Jan-02  S  Option to reject if no From: or Date: header line
-
-Exim, in common with many other MTAs, inserts a From: or Date: header line if
-one is missing. (It also inserts a blank Bcc:, but that is no longer needed by
-RFC 2822 - it was by 822.) The suggestion is an option to give an error
-instead. This could be done by making it possible to detect these insertions in
-the acl_smtp_data ACL.
-------------------------------------------------------------------------------
-

 (6)  01-Jan-02  S  Option to disable the use of -t
 Dave C.
 
 (6)  01-Jan-02  S  Option to disable the use of -t
 Dave C.
 


@@ -767,9 +758,11 @@ Client: We need a variant of 'exim -bs' which would connect to a specified
 host, send AUTH/ATRN, and then accept incoming messages as usual.
 ------------------------------------------------------------------------------
 
 host, send AUTH/ATRN, and then accept incoming messages as usual.
 ------------------------------------------------------------------------------
 

-(50)  22-May-02 T  Add comment (duplicate address) to Envelope-To:
+(50)  22-May-02 S?  Add comment (duplicate address) to Envelope-To:

 
 

-This is just to minimize the confusion some people have.
+This is just to minimize the confusion some people have. However, it is not
+trivially easy to decide which to label as duplicates because of complications
+with redirection. I'm not convinced it will actually reduce confusion.

 ------------------------------------------------------------------------------
 
 (51)  07-Jun-02 S  Option to use another address in callout MAIL FROM
 ------------------------------------------------------------------------------
 
 (51)  07-Jun-02 S  Option to use another address in callout MAIL FROM


@@ -880,6 +873,12 @@ cleanly.
 
 22-Apr-04: Implemented for domains, addresses, and local parts. Hosts are
 too messy!
 
 22-Apr-04: Implemented for domains, addresses, and local parts. Hosts are
 too messy!

+
+The only sensible approach seems to be to allow IP address arguments only.
+Anything else should be diagnosed as an error. However, if a name appears in
+the list, a PTR lookup should be done. This may require a lot of refactoring
+in the code, because of the current assumption that were are (almost) always
+dealing with THE sending host.

 ------------------------------------------------------------------------------
 
 (74)  22-Jul-02 M  Extend -bV to do more semantic checking
 ------------------------------------------------------------------------------
 
 (74)  22-Jul-02 M  Extend -bV to do more semantic checking


@@ -1476,7 +1475,8 @@ and last item with ease; doing this using {if ...} would be quite difficult!"
 (230) 30-Jan-04 M  Find IP addresses of a domain's nameservers
 
 This needs some way of processing a list of things in a similar way, which
 (230) 30-Jan-04 M  Find IP addresses of a domain's nameservers
 
 This needs some way of processing a list of things in a similar way, which

-should perhaps be a more general facility.
+should perhaps be a more general facility. // This can now be done using the
+list facilities of dnsdb; verbose, but it can be done. //

 ------------------------------------------------------------------------------
 
 (231) 30-Jan-04 ?  -C has a number of problems when used for real
 ------------------------------------------------------------------------------
 
 (231) 30-Jan-04 ?  -C has a number of problems when used for real


@@ -1495,7 +1495,9 @@ course, security issues. This is not something I want to go into at present.
 (235) 02-Feb-04 T  Make smtp_accept_count available as a variable
 
 This is for use in ACLs. Of course, it is a snapshot of the count at the
 (235) 02-Feb-04 T  Make smtp_accept_count available as a variable
 
 This is for use in ACLs. Of course, it is a snapshot of the count at the

-start of the receiving process.
+start of the receiving process. As such, it could be confusing because if a
+connection lasts a long time, the "true" value could be very different. For
+this reason, I don't really like this idea.

 ------------------------------------------------------------------------------
 
 (236) 02-Feb-04 S  String in local_scan that's added to the binary version string
 ------------------------------------------------------------------------------
 
 (236) 02-Feb-04 S  String in local_scan that's added to the binary version string


@@ -1522,7 +1524,8 @@ library, because there's no crypto code in Exim itself.
 (240) 23-Feb-04 ? Some way to know if a ip is a mx for a given domain
 
 Some kind of iterative operation for dnsdb might be a general way of providing
 (240) 23-Feb-04 ? Some way to know if a ip is a mx for a given domain
 
 Some kind of iterative operation for dnsdb might be a general way of providing

-this.
+this. // This can now be done using the list facilities of dnsdb; verbose, but
+it can be done. //

 ------------------------------------------------------------------------------
 
 (242) 01-Mar-04 ? Run a filter from an expansion condition
 ------------------------------------------------------------------------------
 
 (242) 01-Mar-04 ? Run a filter from an expansion condition


@@ -1726,23 +1729,12 @@ callout cache in time for the sender's next attempt."
 What about ** lines?
 ------------------------------------------------------------------------------
 
 What about ** lines?
 ------------------------------------------------------------------------------
 

-(298) 25-Oct-04 S Debugging the daemon process only
-
-When there are daemon problems (e.g. it dies) it would be helpful to be able to
-turn on debugging that did not get passed on to any subprocesses.
-------------------------------------------------------------------------------
-

 (299) 25-Oct-04 S Options to make Sieve "keep" pass to next router
 
 Currently, "keep" saves in the mailbox. Probably need two options, for implicit
 and explicit keep commands.
 ------------------------------------------------------------------------------
 
 (299) 25-Oct-04 S Options to make Sieve "keep" pass to next router
 
 Currently, "keep" saves in the mailbox. Probably need two options, for implicit
 and explicit keep commands.
 ------------------------------------------------------------------------------
 

-(300) 25-Oct-04 S Option to lock out Sieve or Exim filter
-
-Currently, if allow_filter is set, either kind of filter is permitted.
-------------------------------------------------------------------------------
-

 (301) 27-Oct-04 M Use an "ACL" to filter logging
 
 This idea was for ACL syntax to be able to "accept" or "deny" individual log
 (301) 27-Oct-04 M Use an "ACL" to filter logging
 
 This idea was for ACL syntax to be able to "accept" or "deny" individual log


@@ -1818,5 +1810,49 @@ often would this actually matter in practice?
 The idea is to save the email address that actually was found in the message
 in a variable so it can be used (e.g. as the From: address in an autoreply).
 ------------------------------------------------------------------------------
 The idea is to save the email address that actually was found in the message
 in a variable so it can be used (e.g. as the From: address in an autoreply).
 ------------------------------------------------------------------------------

---- HWM 310 ------------------------------------------------------------------
+
+(311) 07-Dec-04 ? More flexible SMTP response codes
+
+The requestor wanted to be able to specify, for example, 551 in an ACL deny
+instead of 550, and also vary the defer code. The first digit, however, should
+remain fixed. In addition to main codes, enhanced status codes (RFC 2034) were
+requested. (As far as I can tell, they have never been highly popular.)
+------------------------------------------------------------------------------
+
+(312) 10-Dec-04 ? Shadow remote transports
+
+Unless a lot of work is done, this would be restricted to another remote
+transport. A similar effect could therefore be achieved with "shadow_hosts"
+which are like fallback_hosts but which operate on success.
+------------------------------------------------------------------------------
+
+(313) 21-Jan-05 ? Multiple queues
+
+Exim runs poorly if its queue gets too big. Various ways round this are all
+to some extent kludges. There has been a suggestion of using multiple
+directories instead of just "input". (Originally it was for a whole set of
+spool directories, but that introduces complications with the hint files.)
+On message arrival, somehow a selection of "input" must be made. Then queue
+runners must be startable for the different "queues". Don't forget that the
+"msglog" directory is also involved. Perhaps add a new level of indirection:
+/var/spool/exim/queue1/{input,msglog}, /var/spool/exim/queue2/....
+------------------------------------------------------------------------------
+
+(314) 15-Feb-05 M Multiple headers_{add,remove} for routers
+
+If headers_{add,remove} could be specified multiple times, it would be easier
+for those people that construct configs using .ifdef or .include, etc.
+------------------------------------------------------------------------------
+
+(315) 15-Feb-05 M String variables for use in filters.
+
+Currently, only numerical variables are supported.
+------------------------------------------------------------------------------
+
+(316) 21-Feb-05 M Put callout response into a variable
+
+When a callout fails, put the entire SMTP response into a variable. This is not
+trivial because we probably should retain it in the cache as well.
+------------------------------------------------------------------------------
+--- HWM 316 ------------------------------------------------------------------

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