Changes to chapter 39 (exiscan)

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

diff --git a/doc/doc-misc/WishList b/doc/doc-misc/WishList
index d32f9699e0768b4ed280367d19cac07c59d28db7..9a23b3f306d3ed489bf90b11ad89c21dfebbb434 100644 (file)
--- a/doc/doc-misc/WishList
+++ b/doc/doc-misc/WishList
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-misc/WishList,v 1.9 2004/11/24 16:32:34 ph10 Exp $
+$Cambridge: exim/doc/doc-misc/WishList,v 1.16 2004/12/22 15:31:47 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


@@ -1319,6 +1318,10 @@ done.)
 ------------------------------------------------------------------------------
 
 (202) 10-Oct-03 S  -bvsomething to do a callout after the verify
 ------------------------------------------------------------------------------
 
 (202) 10-Oct-03 S  -bvsomething to do a callout after the verify

+
+For example: -bvc and -bvsc. The problem now (Nov 04) is that there are quite a
+few possible callout options that can be specified in an ACL, and they would
+have to be replicated here.

 ------------------------------------------------------------------------------
 
 (203) 14-Oct-03 S  verify=something to easily check for header presence
 ------------------------------------------------------------------------------
 
 (203) 14-Oct-03 S  verify=something to easily check for header presence


@@ -1372,7 +1375,9 @@ Unfortunately, this isn't quite as trivial as it seems.
 (215) 14-Nov-03 S  A way of turning off message-submission fix-ups
 
 Globally, and perhaps also via an ACL control so that it can be done on a
 (215) 14-Nov-03 S  A way of turning off message-submission fix-ups
 
 Globally, and perhaps also via an ACL control so that it can be done on a

-per-message basis.
+per-message basis. Is this still needed? Since this item was added to this
+list, default fixups for non-local messages have been removed, and control =
+submission has been added.

 ------------------------------------------------------------------------------
 
 (215) 26-Nov-03 M/L Conversion of IDNA domain names for logging
 ------------------------------------------------------------------------------
 
 (215) 26-Nov-03 M/L Conversion of IDNA domain names for logging


@@ -1414,6 +1419,9 @@ radical suggestion for a complete re-design, and is therefore BIG.
 ------------------------------------------------------------------------------
 
 (223) 22-Dec-03 S  Support SOA lookup in dnsdb lookups
 ------------------------------------------------------------------------------
 
 (223) 22-Dec-03 S  Support SOA lookup in dnsdb lookups

+
+This could be like zns, and climb up the tree till it hits a zone. Would the
+name of the zone be required?

 ------------------------------------------------------------------------------
 
 (225) 22-Dec-03 M  Add acl= to routers
 ------------------------------------------------------------------------------
 
 (225) 22-Dec-03 M  Add acl= to routers


@@ -1467,7 +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


@@ -1486,7 +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


@@ -1513,7 +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


@@ -1594,14 +1606,6 @@ A modifier that sets a delay between lines for multiline responses.
 Given that pids are reused non-cyclically these days, is this actually useful?
 ------------------------------------------------------------------------------
 
 Given that pids are reused non-cyclically these days, is this actually useful?
 ------------------------------------------------------------------------------
 

-(269) 26-May-04 U Run both a system and a user filter in test mode
-
-    exim -bF systemfilter -bf userfilter -f sender@dom < message
-
-This would allow testing the way the userfilter handles the system
-variables set by the systemfilter.
-------------------------------------------------------------------------------
-

 (270) 01-Jun-04 M Add headers at top and middle
 
 Various initiatives like SPF and DomainKeys require header lines to be added
 (270) 01-Jun-04 M Add headers at top and middle
 
 Various initiatives like SPF and DomainKeys require header lines to be added


@@ -1654,7 +1658,8 @@ Similar to the bounce and delivery warn message files.
 (280) 23-Jun-04 M A way of adding a header line after callout defer_ok
 
 This would record that, e.g., a sender domain verified, but the callout
 (280) 23-Jun-04 M A way of adding a header line after callout defer_ok
 
 This would record that, e.g., a sender domain verified, but the callout

-could not be done.
+could not be done. There are ways of fudging this, using ACL variables and
+"warn" statements.

 ------------------------------------------------------------------------------
 
 (285) 16-Jul-04 M Separate and independent log_selector for rejectlog
 ------------------------------------------------------------------------------
 
 (285) 16-Jul-04 M Separate and independent log_selector for rejectlog


@@ -1724,23 +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


@@ -1803,5 +1797,33 @@ These variables would hold the number of physical lines in the body and header
 that were longer than 998 bytes. This would be fiddly to implement because of
 the way Exim currently reads the input. It isn't just a trivial patch.
 ------------------------------------------------------------------------------
 that were longer than 998 bytes. This would be fiddly to implement because of
 the way Exim currently reads the input. It isn't just a trivial patch.
 ------------------------------------------------------------------------------

---- HWM 308 ------------------------------------------------------------------
+
+(309) 01-Dec-04 S/M Queue runners should get locks before forking
+
+If a queue-runner opened the -D file and took out the lock before forking, it
+would waste fewer resources if the message was already being delivered. But how
+often would this actually matter in practice?
+------------------------------------------------------------------------------
+
+(310) 06-Dec-04 S After "personal" save what matched
+
+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).
+------------------------------------------------------------------------------
+
+(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.
+------------------------------------------------------------------------------
+--- HWM 312 ------------------------------------------------------------------

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