Always do explicit A/AAAA lookups; no longer make use of the additional

[users/heiko/exim.git] / doc / doc-txt / ChangeLog

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index a938e2643a1cb160185aff8f2204b5b30b28623c..d914efb4328d956864dfb56c025c9d0de79dad6f 100644 (file)
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -1,8 +1,105 @@
-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.254 2005/11/11 10:02:04 ph10 Exp $
+$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.286 2006/02/07 16:36:25 ph10 Exp $

 
 Change log file for Exim from version 4.21
 -------------------------------------------
 
 
 Change log file for Exim from version 4.21
 -------------------------------------------
 

+Exim version 4.61
+-----------------
+
+PH/01 The code for finding all the local interface addresses on a FreeBSD
+      system running IPv6 was broken. This may well have applied to all BSD
+      systems, as well as to others that have similar system calls. The broken
+      code found IPv4 interfaces correctly, but gave incorrect values for the
+      IPv6 interfaces. In particular, ::1 was not found. The effect in Exim was
+      that it would not match correctly against @[] and not recognize the IPv6
+      addresses as local.
+
+PH/02 The ipliteral router was not recognizing addresses of the form user@
+      [ipv6:....] because it didn't know about the "ipv6:" prefix.
+
+PH/03 Added disable_ipv6.
+
+PH/04 Changed $reply_address to use the raw form of the headers instead of the
+      decoded form, because it is most often used to construct To: headers
+      lines in autoreplies, and the decoded form may well be syntactically
+      invalid. However, $reply_address has leading white space removed, and all
+      newlines turned into spaces so that the autoreply transport does not
+      grumble.
+
+PH/05 If group was specified without a user on a router, and no group or user
+      was specified on a transport, the group from the router was ignored.
+
+PH/06 Increased the number of ACL variables to 20 of each type, and arranged
+      for visible compile-time settings that can be used to change these
+      numbers, for those that want even more. Backwards compatibility with old
+      spool files has been maintained. However, going back to a previous Exim
+      release will lost any variables that are in spool files.
+
+PH/07 Two small changes when running in the test harness: increase delay when
+      passing a TCP/IP connection to a new process, in case the original
+      process has to generate a bounce, and remove special handling of
+      127.0.0.2 (sic), which is no longer necessary.
+
+PH/08 Changed debug output of dbfn_open() flags from numbers to names, so as to
+      be the same on different OS.
+
+PH/09 Moved a debug statement in filter processing to avoid a race problem when
+      testing.
+
+JJ/01 exipick: fixed bug where -b (brief) output option showed "Vars:"
+      whether --show-vars was specified or not
+
+JJ/02 exipick: Added support for new ACL variable spool format introduced
+      in 4.61-PH/06
+
+PH/10 Fixed another bug related to PH/04 above: if an incoming message had a
+      syntactically invalid From: or Reply-to: line, and a filter used this to
+      generate an autoreply, and therefore failed to obtain an address for the
+      autoreply, Exim could try to deliver to a non-existent relative file
+      name, causing unrelated and misleading errors. What now happens is that
+      it logs this as a hard delivery error, but does not attempt to create a
+      bounce message.
+
+PH/11 The exinext utility has a -C option for testing purposes, but although
+      the given file was scanned by exinext itself; it wasn't being passed on
+      when Exim was called.
+
+PH/12 In the smtp transport, treat an explicit ECONNRESET error the same as
+      an end-of-file indication when reading a command response.
+
+PH/13 Domain literals for IPv6 were not recognized unless IPv6 support was
+      compiled. In many other places in Exim, IPv6 addresses are always
+      recognized, so I have changed this. It also means that IPv4 domain
+      literals of the form [IPV4:n.n.n.n] are now always recognized.
+
+PH/14 When a uid/gid is specified for the queryprogram router, it cannot be
+      used if the router is not running as root, for example, when verifying at
+      ACL time, or when using -bh. The debugging output from this situation was
+      non-existent - all you got was a failure to exec. I have made two
+      changes:
+
+      (a) Failures to set uid/gid, the current directory, or a process leader
+          in a subprocess such as that created by queryprogram now generate
+          suitable debugging ouput when -d is set.
+
+      (b) The queryprogram router detects when it is not running as root,
+          outputs suitable debugging information if -d is set, and then runs
+          the subprocess without attempting to change uid/gid.
+
+PH/15 Minor change to Makefile for building test_host (undocumented testing
+      feature).
+
+PH/16 As discussed on the list in Nov/Dec: Exim no longer looks at the
+      additional section of a DNS packet that returns MX or SRV records.
+      Instead, it always explicitly searches for A/AAAA records. This avoids
+      major problems that occur when a DNS server includes only records of one
+      type (A or AAAA) in an MX/SRV packet. A byproduct of this change has
+      fixed another bug: if SRV records were looked up and the corresponding
+      address records were *not* found in the additional section, the port
+      values from the SRV records were lost.
+
+
+

 Exim version 4.60
 -----------------
 
 Exim version 4.60
 -----------------
 


@@ -64,6 +161,108 @@ PH/06 When a client host used a correct literal IP address in a HELO or EHLO
       if it matched the actual IP address. This has been tidied up so that it
       doesn't show the same IP address twice.
 
       if it matched the actual IP address. This has been tidied up so that it
       doesn't show the same IP address twice.
 

+PH/07 When both +timestamp and +memory debugging was on, the value given by
+      $tod_xxx expansions could be wrong, because the tod_stamp() function was
+      called by the debug printing, thereby overwriting the timestamp buffer.
+      Debugging no longer uses the tod_stamp() function when +timestamp is set.
+
+PH/08 When the original message was included in an autoreply transport, it
+      always said "this is a copy of the message, including all the headers",
+      even if body_only or headers_only was set. It now gives an appropriate
+      message.
+
+PH/09 Applied a patch from the Sieve maintainer which:
+
+      o  fixes some comments
+      o  adds the (disabled) notify extension core
+      o  adds some debug output for the result of if/elsif tests
+      o  points to the current vacation draft in the documentation
+         and documents the missing references header update
+
+      and most important:
+
+      o  fixes a bug in processing the envelope test (when testing
+         multiple envelope elements, the last element determinted the
+         result)
+
+PH/10 Exim was violating RFC 3834 ("Recommendations for Automatic Responses to
+      Electronic Mail") by including:
+
+        Auto-submitted: auto-generated
+
+      in the messages that it generates (bounce messages and others, such as
+      warnings). In the case of bounce messages for non-SMTP mesages, there was
+      also a typo: it was using "Auto_submitted" (underscore instead of
+      hyphen). Since every message generated by Exim is necessarily in response
+      to another message, thes have all been changed to:
+
+        Auto-Submitted: auto-replied
+
+      in accordance with these statements in the RFC:
+
+        The auto-replied keyword:
+
+        -  SHOULD be used on messages sent in direct response to another
+           message by an automatic process,
+
+        -  MUST NOT be used on manually-generated messages,
+
+        -  MAY be used on Delivery Status Notifications (DSNs) and Message
+           Disposition Notifications (MDNs),
+
+        -  MUST NOT be used on messages generated by automatic or periodic
+           processes, except for messages which are automatic responses to
+           other messages.
+
+PH/11 Added "${if def:sender_address {(envelope-from <$sender_address>)\n\t}}"
+      to the default Received: header definition.
+
+PH/12 Added log selector acl_warn_skipped (default on).
+
+PH/13 After a successful wildlsearch lookup, discard the values of numeric
+      variables because (a) they are in the wrong storage pool and (b) even if
+      they were copied, it wouldn't work properly because of the caching.
+
+PH/14 Add check_rfc2047_length to disable enforcement of RFC 2047 length
+      checking when decoding. Apparently there are clients that generate
+      overlong encoded strings. Why am I not surprised?
+
+PH/15 If the first argument of "${if match_address" was not empty, but did not
+      contain an "@" character, Exim crashed. Now it writes a panic log message
+      and treats the condition as false.
+
+PH/16 In autoreply, treat an empty string for "once" the same as unset.
+
+PH/17 A further patch from the Sieve maintainer: "Introduce the new Sieve
+      extension "envelope-auth".  The code is finished and in agreement with
+      other implementations, but there is no documentation so far and in fact,
+      nobody wrote the draft yet.  This extension is currently #undef'ed, thus
+      not changing the active code.
+
+      Print executed "if" and "elsif" statements when debugging is used. This
+      helps a great deal to understand what a filter does.
+
+      Document more things not specified clearly in RFC3028.  I had all this
+      sorted out, when out of a sudden new issues came to my mind.  Oops."
+
+PH/18 Exim was not recognizing the "net-" search type prefix in match_ip lists
+      (Bugzilla #53).
+
+PH/19 Exim expands the IPv6 address given to -bh to its full non-abbreviated
+      canonical form (as documented). However, after a host name lookup from
+      the IP address, check_host() was doing a simple string comparison with
+      addresses acquired from the DNS when checking that the found name did
+      have the original IP as one of its addresses. Since any found IPv6
+      addresses are likely to be in abbreviated form, the comparison could
+      fail. Luckily, there already exists a function for doing the comparison
+      by converting both addresses to binary, so now that is used instead of
+      the text comparison.
+
+PH/20 There was another similar case to PH/19, when a complete host name was
+      given in a host list; looking up its IP address could give an abbreviated
+      form, whereas the current host's name might or might not be abbreviated.
+      The same fix has been applied.
+

 
 Exim version 4.54
 -----------------
 
 Exim version 4.54
 -----------------


@@ -93,6 +292,7 @@ PH/05 Some modifications to the interface to the fake nameserver for the new
       testing suite.
 
 
       testing suite.
 
 

+

 Exim version 4.53
 -----------------
 
 Exim version 4.53
 -----------------