X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/35af9f61534cba784c1718d804567043da64f2df..41a13e0aab243e127589673148ca9f136d21ff83:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index f57ab6c3f..8a00fffd9 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -1,10 +1,617 @@ -$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.5 2004/10/14 14:52:45 ph10 Exp $ +$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.199 2005/08/08 09:57:29 ph10 Exp $ Change log file for Exim from version 4.21 ------------------------------------------- +Exim version 4.53 +----------------- -Exim version 4.44 +TK/01 Added the "success_on_redirect" address verification option. See + NewStuff for rationale and an example. + +PH/01 Added support for SQLite, basic code supplied by David Woodhouse. + +PH/02 Patch to exigrep to allow it to work on syslog lines. + +PH/03 When creating an mbox file for a virus/spam scan, use fseek() instead of + fread() to skip over the body file's header line, because in Cygwin the + header line is locked and is inaccessible. + +PH/04 Added $message_exim_id, ultimately to replace $message_id (they will both + co-exist for some time) to make it clear that it is the Exim ID that is + referenced, not the Message-ID: header line. + +PH/05 Replaced all Tom's calls to snprintf() with calls to the internal + string_format() function, because snprintf() does not exist on all + operating systems. + +PH/06 The use of forbid_filter_existstest now also locks out the use of the + ${stat: expansion item. + +PH/07 Changed "SMTP protocol violation: synchronization error" into "SMTP + protocol synchronization error", to keep the pedants happy. + +PH/08 Arrange for USE_INET_NTOA_FIX to be set in config.h for AIX systems as + well as for IRIX systems, when gcc is being used. See the host.c source + file for comments. + +PH/09 Installed latest Cygwin configuration files from the Cygwin maintainer. + +PH/10 Named domain lists were not working if used in a queue_smtp_domains + setting. + +PH/11 Added support for the IGNOREQUOTA extension to LMTP, both to the lmtp + transport and to the smtp transport in LMTP mode. + +TK/02 Remove one case of BASE64 error detection FTTB (undocumented anyway). + +PH/12 There was a missing call to search_tidyup() before the fork() in rda.c to + run a filter in a subprocess. This could lead to confusion in subsequent + lookups in the parent process. There should also be a search_tidyup() at + the end of the subprocess. + +PH/13 Previously, if "verify = helo" was set in an ACL, the condition was true + only if the host matched helo_try_verify_hosts, which caused the + verification to occur when the EHLO/HELO command was issued. The ACL just + tested the remembered result. Now, if a previous verification attempt has + not happened, "verify = helo" does it there and then. + +JJ/01 exipick: added $message_exim_id variable (see 4.53-PH/04) + +TK/03 Fix log output including CR from clamd. + +PH/14 A reference to $reply_address when Reply-to: was empty and From: did not + exist provoked a memory error which could cause a segfault. + + +Exim version 4.52 +----------------- + +TF/01 Added support for Client SMTP Authorization. See NewStuff for details. + +PH/01 When a transport filter timed out in a pipe delivery, and the pipe + command itself ended in error, the underlying message about the transport + filter timeout was being overwritten with the pipe command error. Now the + underlying error message should be appended to the second error message. + +TK/01 Fix poll() being unavailable on Mac OSX 10.2. + +PH/02 Reduce the amount of output that "make" produces by default. Full output + can still be requested. + +PH/03 The warning log line about a condition test deferring for a "warn" verb + was being output only once per connection, rather than after each + occurrence (because it was using the same function as for successful + "warn" verbs). This seems wrong, so I have changed it. + +TF/02 Two buglets in acl.c which caused Exim to read a few bytes of memory that + it should not have, which might have caused a crash in the right + circumstances, but probably never did. + +PH/04 Installed a modified version of Tony Finch's patch to make submission + mode fix the return path as well as the Sender: header line, and to + add a /name= option so that you can make the user's friendly name appear + in the header line. + +TF/03 Added the control = fakedefer ACL modifier. + +TF/04 Added the ratelimit ACL condition. See NewStuff for details. Thanks to + Mark Lowes for thorough testing. + +TK/02 Rewrote SPF support to work with libspf2 versions >1.2.0. + +TK/03 Merged latest SRS patch from Miles Wilton. + +PH/05 There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts + with the definition in sysexits.h (which is #included earlier). + Fortunately, Exim does not actually use EX_OK. The code used to try to + preserve the sysexits.h value, by assumimg that macro definitions were + scanned for macro replacements. I have been disabused of this notion, + so now the code just undefines EX_OK before #including unistd.h. + +PH/06 There is a timeout for writing blocks of data, set by, e.g. data_timeout + in the smtp transport. When a block could not be written in a single + write() function, the timeout was being re-applied to each part-write. + This seems wrong - if the receiver was accepting one byte at a time it + would take for ever. The timeout is now adjusted when this happens. It + doesn't have to be particularly precise. + +TK/04 Added simple SPF lookup method in EXPERIMENTAL_SPF. See NewStuff for + details. Thanks to Chris Webb for the patch! + +PH/07 Added "fullpostmaster" verify option, which does a check to + without a domain if the check to fails. + +SC/01 Eximstats: added -xls and the ability to specify output files + (patch written by Frank Heydlauf). + +SC/02 Eximstats: use FileHandles for outputing results. + +SC/03 Eximstats: allow any combination of xls, txt, and html output. + +SC/04 Eximstats: fixed display of large numbers with -nvr option + +SC/05 Eximstats: fixed merging of reports with empty tables. + +SC/06 Eximstats: added the -include_original_destination flag + +SC/07 Eximstats: removed tabs and trailing whitespace. + +TK/05 Malware: Improve on aveserver error handling. Patch from Alex Miller. + +TK/06 MBOX spool code: Add real "From " MBOX separator line + so the .eml file is really in mbox format (even though + most programs do not really care). Patch from Alex Miller. + +TK/07 MBOX spool code: Add X-Envelope-From: and X-Envelope-To: headers. + The latter is generated from $received_to and is only set if the + message has one envelope recipient. SA can use these headers, + obviously out-of-the-box. Patch from Alex Miller. + +PH/08 The ${def test on a variable was returning false if the variable's + value was "0", contrary to what the specification has always said! + The result should be true unless the variable is empty. + +PH/09 The syntax error of a character other than { following "${if + def:variable_name" (after optional whitespace) was not being diagnosed. + An expansion such as ${if def:sender_ident:{xxx}{yyy}} in which an + accidental colon was present, for example, could give incorrect results. + +PH/10 Tidied the code in a number of places where the st_size field of a stat() + result is used (not including appendfile, where other changes are about + to be made). + +PH/11 Upgraded appendfile so that quotas larger than 2G are now supported. + This involved changing a lot of size variables from int to off_t. It + should work with maildirs and everything. + +TK/08 Apply fix provided by Michael Haardt to prevent deadlock in case of + spamd dying while we are connected to it. + +TF/05 Fixed a ${extract error message typo reported by Jeremy Harris + + +PH/12 Applied Alex Kiernan's patch for the API change for the error callback + function for BDB 4.3. + +PH/13 Changed auto_thaw such that it does not apply to bounce messages. + +PH/14 Imported PCRE 6.0; this was more than just a trivial operation because + the sources for PCRE have been re-arranged and more files are now + involved. + +PH/15 The code I had for printing potentially long long variables in PH/11 + above was not the best (it lost precision). The length of off_t variables + is now inspected at build time, and an appropriate printing format (%ld + or %lld) is chosen and #defined by OFF_T_FMT. We also define LONGLONG_T + to be "long long int" or "long int". This is needed for the internal + formatting function string_vformat(). + +PH/16 Applied Matthew Newton's patch to exicyclog: "If log_file_path is set in + the configuration file to be ":syslog", then the script "guesses" where + the logs files are, rather than using the compiled in default. In our + case the guess is not the same as the compiled default, so the script + suddenly stopped working when I started to use syslog. The patch checks + to see if log_file_path is "". If so, it attempts to read it from exim + with no configuration file to get the compiled in version, before it + falls back to the previous guessing code." + +TK/09 Added "prvs" and "prvscheck" expansion items. These help a lot with + implementing BATV in an Exim configuration. See NewStuff for the gory + details. + +PH/17 Applied Michael Haardt's patch for HP-UX, affecting only the os.h and + Makefile that are specific to HP-UX. + +PH/18 If the "use_postmaster" option was set for a recipient callout together + with the "random" option, the postmaster address was used as the MAIL + FROM address for the random test, but not for the subsequent recipient + test. It is now used for both. + +PH/19 Applied Michael Haardt's patch to update Sieve to RFC3028bis. "The + patch removes a few documentation additions to RFC 3028, because the + latest draft now contains them. It adds the new en;ascii-case comparator + and a new error check for 8bit text in MIME parts. Comparator and + require names are now matched exactly. I enabled the subaddress + extension, but it is not well tested yet (read: it works for me)." + +PH/20 Added macros for time_t as for off_t (see PH/15 above) and used them to + rework some of the code of TK/09 above to avoid the hardwired use of + "%lld" and "long long". Replaced the call to snprintf() with a call to + string_vformat(). + +PH/21 Added some other messages to those in 4.51/PH/42, namely "All relevant MX + records point to non-existent hosts", "retry timeout exceeded", and + "retry time not reached for any host after a long failure period". + +PH/22 Fixed some oversights/typos causing bugs when Exim is compiled with + experimental DomainKeys support: + + (1) The filter variables $n0-$n9 and $sn0-$sn9 were broken. + (2) On an error such as an illegally used "control", the wrong name for + the control was given. + + These problems did NOT occur unless DomainKeys support was compiled. + +PH/23 Added daemon_startup_retries and daemon_startup_sleep. + +PH/24 Added ${if match_ip condition. + +PH/25 Put debug statements on either side of calls to EXIM_DBOPEN() for hints + databases so that it will be absolutely obvious if a crash occurs in the + DB library. This is a regular occurrence (often caused by mis-matched + db.h files). + +PH/26 Insert a lot of missing (void) casts for functions such as chown(), + chmod(), fcntl(), sscanf(), and other functions from stdio.h. These were + picked up on a user's system that detects such things. There doesn't seem + to be a gcc warning option for this - only an attribute that has to be + put on the function's prototype. It seems that in Fedora Core 4 they have + set this on a number of new functions. No doubt there will be more in due + course. + +PH/27 If a dnslookup or manualroute router is set with verify=only, it need not + specify a transport. However, if an address that was verified by such a + router was the subject of a callout, Exim crashed because it tried to + read the rcpt_include_affixes from the non-existent transport. Now it + just assumes that the setting of that option is false. This bug was + introduced by 4.51/PH/31. + +PH/28 Changed -d+all to exclude +memory, because that information is very + rarely of interest, but it makes the output a lot bigger. People tend to + do -d+all out of habit. + +PH/29 Removed support for the Linux-libc5 build, as it is obsolete and the + code in os-type was giving problems when libc.so lives in lib64, like on + x86_64 Fedora Core. + +PH/30 Exim's DNS code uses the original T_xxx names for DNS record times. These + aren't the modern standard, and it seems that some systems' include files + don't always have them. Exim was already checking for some of the newer + ones like T_AAAA, and defining it itself. I've added checks for all the + record types that Exim uses. + +PH/31 When using GnuTLS, if the parameters cache file did not exist, Exim was + not automatically generating a new one, as it is supposed to. This + prevented TLS from working. If the file did exist, but contained invalid + data, a new version was generated, as expected. It was only the case of a + non-existent file that was broken. + +TK/10 Domainkeys: Fix a bug in verification that caused a crash in conjunction + with a change in libdomainkeys > 0.64. + +TK/11 Domainkeys: Change the logic how the "testing" policy flag is retrieved + from DNS. If the selector record carries the flag, it now has + precedence over the domain-wide flag. + +TK/12 Cleared some compiler warnings related to SPF, SRS and DK code. + +PH/32 In mua_wrapper mode, if an smtp transport configuration error (such as + the use of a port name that isn't defined in /etc/services) occurred, the + message was deferred as in a normal delivery, and thus remained on the + spool, instead of being failed because of the mua_wrapper setting. This + is now fixed, and I tidied up some of the mua_wrapper messages at the + same time. + +SC/08 Eximstats: whilst parsing the mainlog(s), store information about + the messages in a hash of arrays rather than using individual hashes. + This is a bit cleaner and results in dramatic memory savings, albeit + at a slight CPU cost. + +SC/09 Eximstats: added the -show_rt and the -show_dt flags + as requested by Marc Sherman. + +SC/10 Eximstats: added histograms for user specified patterns as requested + by Marc Sherman. + +SC/11 Eximstats: v1.43 - bugfix for pattern histograms with -h0 specified. + +PH/33 Patch from the Cygwin maintainer to add "b" to all occurences of + fopen() in the content-scanning modules that did not already have it. + + +Exim version 4.51 +----------------- + +TK/01 Added Yahoo DomainKeys support via libdomainkeys. See + doc/experimental-spec.txt for details. (http://domainkeys.sf.net) + +TK/02 Fix ACL "control" statement not being available in MIME ACL. + +TK/03 Fix ACL "regex" condition not being available in MIME ACL. + +PH/01 Installed a patch from the Sieve maintainer that allows -bf to be used + to test Sieve filters that use "vacation". + +PH/02 Installed a slightly modified version of Nikos Mavrogiannopoulos' patch + that changes the way the GnuTLS parameters are stored in the cache file. + The new format can be generated externally. For backward compatibility, + if the data in the cache doesn't make sense, Exim assumes it has read an + old-format file, and it generates new data and writes a new file. This + means that you can't go back to an older release without removing the + file. + +PH/03 A redirect router that has both "unseen" and "one_time" set does not + work if there are any delivery delays because "one_time" forces the + parent to be marked "delivered", so its unseen clone is never tried + again. For this reason, Exim now forbids the simultaneous setting of + these two options. + +PH/04 Change 4.11/85 fixed an obscure bug concerned with addresses that are + redirected to themselves ("homonym" addresses). Read the long ChangeLog + entry if you want to know the details. The fix, however, neglected to + consider the case when local delivery batching is involved. The test for + "previously delivered" was not happening when checking to see if an + address could be batched with a previous (undelivered) one; under + certain circumstances this could lead to multiple deliveries to the same + address. + +PH/05 Renamed the macro SOCKLEN_T as EXIM_SOCKLEN_T because AIX uses SOCKLEN_T + in its include files, and this causes problems building Exim. + +PH/06 A number of "verify =" ACL conditions have no options (e.g. verify = + header_syntax) but Exim was just ignoring anything given after a slash. + In particular, this caused confusion with an attempt to use "verify = + reverse_host_lookup/defer_ok". An error is now given when options are + supplied for verify items that do not have them. (Maybe reverse_host_ + lookup should have a defer_ok option, but that's a different point.) + +PH/07 Increase the size of the buffer for incoming SMTP commands from 512 (as + defined by RFC 821) to 2048, because there were problems with some AUTH + commands, and RFC 1869 says the size should be increased for extended + SMTP commands that take arguments. + +PH/08 Added ${dlfunc dynamically loaded function for expansion (code from Tony + Finch). + +PH/09 Previously, an attempt to use ${perl when it wasn't compiled gave an + "unknown" error; now it says that the functionality isn't in the binary. + +PH/10 Added a nasty fudge to try to recognize and flatten LDAP passwords in + an address' error message when a string expansion fails (syntax or + whatever). Otherwise the password may appear in the log. Following change + PH/42 below, there is no longer a chance of it appearing in a bounce + message. + +PH/11 Installed exipick version 20050225.0 from John Jetmore. + +PH/12 If the last host in a fallback_hosts list was multihomed, only the first + of its addresses was ever tried. (Bugzilla bug #2.) + +PH/13 If "headers_add" in a transport didn't end in a newline, Exim printed + the result incorrectly in the debug output. (It correctly added a newline + to what was transported.) + +TF/01 Added $received_time. + +PH/14 Modified the default configuration to add an acl_smtp_data ACL, with + commented out examples of how to interface to a virus scanner and to + SpamAssassin. Also added commented examples of av_scanner and + spamd_address settings. + +PH/15 Further to TK/02 and TK/03 above, tidied up the tables of what conditions + and controls are allowed in which ACLs. There were a couple of minor + errors. Some of the entries in the conditions table (which is a table of + where they are NOT allowed) were getting very unwieldy; rewrote them as a + negation of where the condition IS allowed. + +PH/16 Installed updated OS/os.c-cygwin from the Cygwin maintainer. + +PH/17 The API for radiusclient changed at release 0.4.0. Unfortunately, the + header file does not have a version number, so I've had to invent a new + value for RADIUS_LIB_TYPE, namely "RADIUSCLIENTNEW" to request the new + API. The code is untested by me (my Linux distribution still has 0.3.2 of + radiusclient), but it was contributed by a Radius user. + +PH/18 Installed Lars Mainka's patch for the support of CRL collections in + files or directories, for OpenSSL. + +PH/19 When an Exim process that is running as root has to create an Exim log + file, it does so in a subprocess that runs as exim:exim so as to get the + ownership right at creation (otherwise, other Exim processes might see + the file with the wrong ownership). There was no test for failure of this + fork() call, which would lead to the process getting stuck as it waited + for a non-existent subprocess. Forks do occasionally fail when resources + run out. I reviewed all the other calls to fork(); they all seem to check + for failure. + +PH/20 When checking for unexpected SMTP input at connect time (before writing + the banner), Exim was not dealing correctly with a non-positive return + from the read() function. If the client had disconnected by this time, + the result was a log entry for a synchronization error with an empty + string after "input=" when read() returned zero. If read() returned -1 + (an event I could not check), uninitialized data bytes were printed. + There were reports of junk text (parts of files, etc) appearing after + "input=". + +PH/21 Added acl_not_smtp_mime to allow for MIME scanning for non-SMTP messages. + +PH/22 Added support for macro redefinition, and (re)definition in between + driver and ACL definitions. + +PH/23 The cyrus_sasl authenticator was expanding server_hostname, but then + forgetting to use the resulting value; it was using the unexpanded value. + +PH/24 The cyrus_sasl authenticator was advertising mechanisms for which it + hadn't been configured. The fix is from Juergen Kreileder, who + understands it better than I do: + + "Here's what I see happening with three configured cyrus_sasl + authenticators configured (plain, login, cram-md5): + + On startup auth_cyrus_sasl_init() gets called for each of these. + This means three calls to sasl_listmech() without a specified mech_list. + => SASL tests which mechs of all available mechs actually work + => three warnings about OTP not working + => the returned list contains: plain, login, cram-md5, digest-md5, ... + + With the patch, sasl_listmech() also gets called three times. But now + SASL's mech_list option is set to the server_mech specified in the the + authenticator. Or in other words, the answer from sasl_listmech() + gets limited to just the mech you're testing for (which is different + for each call.) + => the return list contains just 'plain' or 'login', 'cram-md5' or + nothing depending on the value of ob->server_mech. + + I've just tested the patch: Authentication still works fine, + unavailable mechs specified in the exim configuration are still + caught, and the auth.log warnings about OTP are gone." + +PH/25 When debugging is enabled, the contents of the command line are added + to the debugging output, even when log_selector=+arguments is not + specified. + +PH/26 Change scripts/os-type so that when "uname -s" returns just "GNU", the + answer is "GNU", and only if the return is "GNU/something" is the answer + "Linux". + +PH/27 $acl_verify_message is now set immediately after the failure of a + verification in an ACL, and so is available in subsequent modifiers. In + particular, the message can be preserved by coding like this: + + warn !verify = sender + set acl_m0 = $acl_verify_message + + Previously, $acl_verify_message was set only while expanding "message" + and "log_message" when a very denied access. + +PH/28 Modified OS/os.c-Linux with + + -#ifndef OS_LOAD_AVERAGE + +#if !defined(OS_LOAD_AVERAGE) && defined(__linux__) + + to make Exim compile on kfreebsd-gnu. (I'm totally confused about the + nomenclature these days.) + +PH/29 Installed patch from the Sieve maintainer that adds the options + sieve_useraddress and sieve_subaddress to the redirect router. + +PH/30 In these circumstances: + . Two addresses routed to the same list of hosts; + . First host does not offer TLS; + . First host accepts first address; + . First host gives temporary error to second address; + . Second host offers TLS and a TLS session is established; + . Second host accepts second address. + Exim incorrectly logged both deliveries with the TLS parameters (cipher + and peerdn, if requested) that were in fact used only for the second + address. + +PH/31 When doing a callout as part of verifying an address, Exim was not paying + attention to any local part prefix or suffix that was matched by the + router that accepted the address. It now behaves in the same way as it + does for delivery: the affixes are removed from the local part unless + rcpt_include_affixes is set on the transport. + +PH/32 Add the sender address, as F=<...>, to the log line when logging a + timeout during the DATA phase of an incoming message. + +PH/33 Sieve envelope tests were broken for match types other than :is. I have + applied a patch sanctioned by the Sieve maintainer. + +PH/34 Change 4.50/80 broke Exim in that it could no longer handle cases where + the uid or gid is negative. A case of a negative gid caused this to be + noticed. The fix allows for either to be negative. + +PH/35 ACL_WHERE_MIME is now declared unconditionally, to avoid too much code + clutter, but the tables that are indexed by ACL_WHERE_xxx values had been + overlooked. + +PH/36 The change PH/12 above was broken. Fixed it. + +PH/37 Exim used to check for duplicate addresses in the middle of routing, on + the grounds that routing the same address twice would always produce the + same answer. This might have been true once, but it is certainly no + longer true now. Routing a child address may depend on the previous + routing that produced that child. Some complicated redirection strategies + went wrong when messages had multiple recipients, and made Exim's + behaviour dependent on the order in which the addresses were given. + + I have moved the duplicate checking until after the routing is complete. + Exim scans the addresses that are assigned to local and remote + transports, and removes any duplicates. This means that more work will be + done, as duplicates will always all be routed, but duplicates are + presumably rare, so I don't expect this is of any significance. + + For deliveries to pipes, files, and autoreplies, the duplicate checking + still happens during the routing process, since they are not going to be + routed further. + +PH/38 Installed a patch from Ian Freislich, with the agreement of Tom Kistner. + It corrects a timeout issue with spamd. This is Ian's comment: "The + background is that sometimes spamd either never reads data from a + connection it has accepted, or it never writes response data. The exiscan + spam.[ch] uses a 3600 second timeout on spamd socket reads, further, it + blindly assumes that writes won't block so it may never time out." + +PH/39 Allow G after quota size as well as K and M. + +PH/40 The value set for $authenticated_id in an authenticator may not contain + binary zeroes or newlines because the value is written to log lines and + to spool files. There was no check on this. Now the value is run through + the string_printing() function so that such characters are converted to + printable escape sequences. + +PH/41 $message_linecount is a new variable that contains the total number of + lines in the message. Compare $body_linecount, which is the count for the + body only. + +PH/42 Exim no longer gives details of delivery errors for specific addresses in + bounce and delay warning messages, except in certain special cases, which + are as follows: + + (a) An SMTP error message from a remote host; + (b) A message specified in a :fail: redirection; + (c) A message specified in a "fail" command in a system filter; + (d) A message specified in a FAIL return from the queryprogram router; + (e) A message specified by the cannot_route_message router option. + + In these cases only, Exim does include the error details in bounce and + warning messages. There are also a few cases where bland messages such + as "unrouteable address" or "local delivery error" are given. + +PH/43 $value is now also set for the "else" part of a ${run expansion. + +PH/44 Applied patch from the Sieve maintainer: "The vacation draft is still + being worked on, but at least Exim now implements the latest version to + play with." + +PH/45 In a pipe transport, although a timeout while waiting for the pipe + process to complete was treated as a delivery failure, a timeout while + writing the message to the pipe was logged, but erroneously treated as a + successful delivery. Such timeouts include transport filter timeouts. For + consistency with the overall process timeout, these timeouts are now + treated as errors, giving rise to delivery failures by default. However, + there is now a new Boolean option for the pipe transport called + timeout_defer, which, if set TRUE, converts the failures into defers for + both kinds of timeout. A transport filter timeout is now identified in + the log output. + +PH/46 The "scripts/Configure-config.h" script calls "make" at one point. On + systems where "make" and "gmake" are different, calling "gmake" at top + level broke things. I've arranged for the value of $(MAKE) to be passed + from the Makefile to this script so that it can call the same version of + "make". + + +A note about Exim versions 4.44 and 4.50 +---------------------------------------- + +Exim 4.50 was meant to be the next release after 4.43. It contains a lot of +changes of various kinds. As a consequence, a big documentation update was +needed. This delayed the release for rather longer than seemed good, especially +in the light of a couple of (minor) security issues. Therefore, the changes +that fixed bugs were backported into 4.43, to create a 4.44 maintenance +release. So 4.44 and 4.50 are in effect two different branches that both start +from 4.43. + +I have left the 4.50 change log unchanged; it contains all the changes since +4.43. The change log for 4.44 is below; many of its items are identical to +those for 4.50. This seems to be the most sensible way to preserve the +historical information. + + +Exim version 4.50 ----------------- 1. Minor wording change to the doc/README.SIEVE file. @@ -19,6 +626,554 @@ Exim version 4.44 4. Give more explanation in the error message when the command for a transport filter fails to execute. + 5. There are several places where Exim runs a non-Exim command in a + subprocess. The SIGUSR1 signal should be disabled for these processes. This + was being done only for the command run by the queryprogram router. It is + now done for all such subprocesses. The other cases are: ${run, transport + filters, and the commands run by the lmtp and pipe transports. + + 6. Added CONFIGURE_GROUP build-time option. + + 7. Some older OS have a limit of 256 on the maximum number of file + descriptors. Exim was using setrlimit() to set 1000 as a large value + unlikely to be exceeded. Change 4.43/17 caused a lot of logging on these + systems. I've change it so that if it can't get 1000, it tries for 256. + + 8. "control=submission" was allowed, but had no effect, in a DATA ACL. This + was an oversight, and furthermore, ever since the addition of extra + controls (e.g. 4.43/32), the checks on when to allow different forms of + "control" were broken. There should now be diagnostics for all cases when a + control that does not make sense is encountered. + + 9. Added the /retain_sender option to "control=submission". + +10. $recipients is now available in the predata ACL (oversight). + +11. Tidy the search cache before the fork to do a delivery from a message + received from the command line. Otherwise the child will trigger a lookup + failure and thereby defer the delivery if it tries to use (for example) a + cached ldap connection that the parent has called unbind on. + +12. If verify=recipient was followed by verify=sender in a RCPT ACL, the value + of $address_data from the recipient verification was clobbered by the + sender verification. + +13. The value of address_data from a sender verification is now available in + $sender_address_data in subsequent conditions in the ACL statement. + +14. Added forbid_sieve_filter and forbid_exim_filter to the redirect router. + +15. Added a new option "connect=