X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/48a53b7fdcd495fe49d43e395446b225e8193925..dd16e114db70592df34e8b9ee4a05dae69aaba43:/doc/doc-txt/ChangeLog?ds=sidebyside diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index eff70cc39..f51f97071 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -1,8 +1,582 @@ -$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.213 2005/08/30 10:07:58 ph10 Exp $ +$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.343 2006/04/20 10:57:46 ph10 Exp $ Change log file for Exim from version 4.21 ------------------------------------------- +Exim version 4.62 +----------------- + +TF/01 Fix the add_header change below (4.61 PH/55) which had a bug that (amongst + other effects) broke the use of negated acl sub-conditions. + +PH/01 ${readsocket now supports Internet domain sockets (modified John Jetmore + patch). + +PH/02 When tcp-wrappers is called from Exim, it returns only "deny" or "allow". + "Deny" causes Exim to reject the incoming connection with a 554 error. + Unfortunately, if there is a major crisis, such as a disk failure, + tcp-wrappers gives "deny", whereas what one would like would be some + kind of temporary error. A kludge has been added to help with this. + Before calling hosts_ctl(), errno is set zero. If the result is "deny", a + 554 error is used if errno is still zero or contains ENOENT (which occurs + if either of the /etc/hosts.{allow,deny} files is missing). Otherwise, a + 451 error is used. + +PH/03 Add -lutil to the default FreeBSD LIBS setting. + +PH/04 Change PH/19 for 4.61 was too wide. It should not be applied to host + errors. Otherwise a message that provokes a temporary error (when other + messages do not) can cause a whole host to time out. + + +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. + +PH/17 If a delivery to a pipe, file, or autoreply was deferred, Exim was not + using the correct key (the original address) when searching the retry + rules in order to find which one to use for generating the retry hint. + +PH/18 If quota_warn_message contains a From: header, Exim now refrains from + adding the default one. Similarly, if it contains a Reply-To: header, the + errors_reply_to option, if set, is not used. + +PH/19 When calculating a retry time, Exim used to measure the "time since + failure" by looking at the "first failed" field in the retry record. Now + it does not use this if it is later than than the arrival time of the + message. Instead it uses the arrival time. This makes for better + behaviour in cases where some deliveries succeed, thus re-setting the + "first failed" field. An example is a quota failure for a huge message + when small messages continue to be delivered. Without this change, the + "time since failure" will always be short, possible causing more frequent + delivery attempts for the huge message than are intended. + [Note: This change was subsequently modified - see PH/04 for 4.62.] + +PH/20 Added $auth1, $auth2, $auth3 to contain authentication data (as well as + $1, $2, $3) because the numerical variables can be reset during some + expansion items (e.g. "match"), thereby losing the authentication data. + +PH/21 Make -bV show the size of off_t variables so that the test suite can + decide whether to run tests for quotas > 2G. + +PH/22 Test the values given for quota, quota_filecount, quota_warn_threshold, + mailbox_size, and mailbox_filecount in the appendfile transport. If a + filecount value is greater than 2G or if a quota value is greater than 2G + on a system where the size of off_t is not greater than 4, a panic error + is given. + +PH/23 When a malformed item such as 1.2.3/24 appears in a host list, it can + never match. The debug and -bh output now contains an explicit error + message indicating a malformed IPv4 address or mask. + +PH/24 An host item such as 1.2.3.4/abc was being treated as the IP address + 1.2.3.4 without a mask. Now it is not recognized as an IP address, and + PH/23 above applies. + +PH/25 Do not write to syslog when running in the test harness. The only + occasion when this arises is a failure to open the main or panic logs + (for which there is an explicit test). + +PH/26 Added the /no_tell option to "control=freeze". + +PH/27 If a host name lookup failed very early in a connection, for example, if + the IP address matched host_lookup and the reverse lookup yielded a name + that did not have a forward lookup, an error message of the form "no IP + address found for host xxx.xxx.xxx (during SMTP connection from NULL)" + could be logged. Now it outputs the IP address instead of "NULL". + +PH/28 An enabling patch from MH: add new function child_open_exim2() which + allows the sender and the authenticated sender to be set when + submitting a message from within Exim. Since child_open_exim() is + documented for local_scan(), the new function should be too. + +PH/29 In GnuTLS, a forced expansion failure for tls_privatekey was not being + ignored. In both GnuTLS and OpenSSL, an expansion of tls_privatekey that + results in an empty string is now treated as unset. + +PH/30 Fix eximon buffer overflow bug (Bugzilla #73). + +PH/31 Added sender_verify_fail logging option. + +PH/32 In November 2003, the code in Exim that added an empty Bcc: header when + needed by RFC 822 but not by RFC 2822 was commented out. I have now + tidied the source and removed it altogether. + +PH/33 When a queue run was abandoned because the load average was too high, a + log line was always written; now it is written only if the queue_run log + selector is set. In addition, the log line for abandonment now contains + information about the queue run such as the pid. This is always present + in "start" and "stop" lines but was omitted from the "abandon" line. + +PH/34 Omit spaces between a header name and the colon in the error message that + is given when verify = headers_syntax fails (if there are lots of them, + the message gets confusing). + +PH/35 Change the default for dns_check_names_pattern to allow slashes within + names, as there are now some PTR records that contain slashes. This check + is only to protect against broken name servers that fall over on strange + characters, so the fact that it applies to all lookups doesn't matter. + +PH/36 Now that the new test suite is complete, we can remove some of the + special code in Exim that was needed for the old test suite. For example, + sorting DNS records because real resolvers return them in an arbitrary + order. The new test suite's fake resolver always returns records in the + same order. + +PH/37 When running in the test harness, use -odi for submitted messages (e.g. + bounces) except when queue_only is set, to avoid logging races between + the different processes. + +PH/38 Panic-die if .include specifies a non-absolute path. + +PH/39 A tweak to the "H" retry rule from its user. + +JJ/03 exipick: Removed parentheses from 'next' and 'last' calls that specified + a label. They prevented compilation on older perls. + +JJ/04 exipick: Refactored code to prevent implicit split to @_ which caused + a warning to be raised on newish perls. + +JJ/05 exipick: Fixed bug where -bpc always showed a count of all messages + on queue. Changes to match documented behaviour of showing count of + messages matching specified criteria. + +PH/40 Changed the default ident timeout from 30s to 5s. + +PH/41 Added support for the use of login_cap features, on those BSD systems + that have them, for controlling the resources used by pipe deliveries. + +PH/42 The content-scanning code uses fopen() to create files in which to put + message data. Previously it was not paying any attention to the mode of + the files. Exim runs with umask(0) because the rest of the code creates + files with open(), and sets the required mode explicitly. Thus, these + files were ending up world-writeable. This was not a big issue, because, + being within the spool directory, they were not world-accessible. I have + created a function called modefopen, which takes an additional mode + argument. It sets umask(777), creates the file, chmods it to the required + mode, then resets the umask. All the relevant calls to fopen() in the + content scanning code have been changed to use this function. + +PH/43 If retry_interval_max is set greater than 24 hours, it is quietly reset + to 24 hours. This avoids potential overflow problems when processing G + and H retry rules. I suspect nobody ever tinkers with this value. + +PH/44 Added STRIP_COMMAND=/usr/bin/strip to the FreeBSD Makefile. + +PH/45 When the plaintext authenticator is running as a client, the server's + challenges are checked to ensure they are valid base64 strings. By + default, the authentication attempt is cancelled if an invalid string is + received. Setting client_ignore_invalid_base64 true ignores these errors. + The decoded challenge strings are now placed in $auth1, $auth2, etc. as + they are received. Thus, the responses can be made to depend on the + challenges. If an invalid string is ignored, an empty string is placed in + the variable. + +PH/46 Messages that are created by the autoreply transport now contains a + References: header, in accordance with RFCs 2822 and 3834. + +PH/47 Added authenticated_sender_force to the smtp transport. + +PH/48 The ${prvs expansion was broken on systems where time_t was long long. + +PH/49 Installed latest patch from the Sieve maintainer. + +PH/50 When an Exim quota was set without a file count quota, and mailbox_size + was also set, the appendfile transport was unnecessarily scanning a + directory of message files (e.g. for maildir delivery) to find the count + of files (along with the size), even though it did not need this + information. It now does the scan only if it needs to find either the + size of the count of files. + +PH/51 Added ${time_eval: to convert Exim time strings into seconds. + +PH/52 Two bugs concerned with error handling when the smtp transport is + used in LMTP mode: + + (i) Exim was not creating retry information for temporary errors given + for individual recipients after the DATA command when the smtp transport + was used in LMTP mode. This meant that they could be retried too + frequently, and not timed out correctly. + + (ii) Exim was setting the flag that allows error details to be returned + for LMTP errors on RCPT commands, but not for LMTP errors for individual + recipients that were returned after the DATA command. + +PH/53 This is related to PH/52, but is more general: for any failing address, + when detailed error information was permitted to be returned to the + sender, but the error was temporary, then after the final timeout, only + "retry timeout exceeded" was returned. Now it returns the full error as + well as "retry timeout exceeded". + +PH/54 Added control=allow_auth_unadvertised, as it seems there are clients that + do this, and (what is worse) MTAs that accept it. + +PH/55 Added the add_header modified to ACLs. The use of "message" with "warn" + will now be deprecated. + +PH/56 New os.c-cygwin from the Cygwin maintainer. + +JJ/06 exipick: added --unsorted option to allow unsorted output in all output + formats (previously only available in exim formats via -bpr, -bpru, + and -bpra. Now also available in native and exiqgrep formats) + +JJ/07 exipick: added --freeze and --thaw options to allow faster interaction + with very large, slow to parse queues + +JJ/08 exipick: added ! as generic prefix to negate any criteria format + +JJ/09 exipick: miscellaneous performance enhancements (~24% improvements) + +PH/57 Tidies in SMTP dialogue display in debug output: (i) It was not showing + responses to authentication challenges, though it was showing the + challenges; (ii) I've removed the CR characters from the debug output for + SMTP output lines. + +PH/58 Allow for the insertion of a newline as well as a space when a string + is turned into more than one encoded-word during RFC 2047 encoding. The + Sieve code now uses this. + +PH/59 Added the following errors that can be detected in retry rules: mail_4xx, + data_4xx, lost_connection, tls_required. + +PH/60 When a VRFY deferred or FAILED, the log message rather than the user + message was being sent as an SMTP response. + +PH/61 Add -l and -k options to exicyclog. + +PH/62 When verifying, if an address was redirected to one new address, so that + verification continued, and the new address failed or deferred after + having set something in $address_data, the value of $address_data was not + passed back to the ACL. This was different to the case when no + redirection occurred. The value is now passed back in both cases. + +PH/63 Changed the macro HAVE_LOGIN_CAP (see PH/41 for this release above) to + HAVE_SETCLASSRESOURCES because there are different APIs in use that all + use login_cap.h, so on its own it isn't the distinguishing feature. The + new name refers directly to the setclassresources() function. + +PH/65 Added configuration files for NetBSD3. + +PH/66 Updated OS/Makefile-HP-UX for gcc 4.1.0 with HP-UX 11. + +PH/67 Fixed minor infelicity in the sorting of addresses to ensure that IPv6 + is preferred over IPv4. + +PH/68 The bounce_return_message and bounce_return_body options were not being + honoured for bounces generated during the reception of non-SMTP messages. + In particular, this applied to messages rejected by the ACL. This bug has + been fixed. However, if bounce_return_message is true and bounce_return_ + body is false, the headers that are returned for a non-SMTP message + include only those that have been read before the error was detected. + (In the case of an ACL rejection, they have all been read.) + +PH/69 The HTML version of the specification is now built in a directory called + spec_html instead of spec.html, because the latter looks like a path with + a MIME-type, and this confuses some software. + +PH/70 Catch two compiler warnings in sieve.c. + +PH/71 Fixed an obscure and subtle bug (thanks Alexander & Matthias). The + function verify_get_ident() calls ip_connect() to connect a socket, but + if the "connect()" function timed out, ip_connect() used to close the + socket. However, verify_get_ident() also closes the socket later, and in + between Exim writes to the log, which may get opened at this point. When + the socket was closed in ip_connect(), the log could get the same file + descriptor number as the socket. This naturally causes chaos. The fix is + not to close the socket in ip_connect(); the socket should be closed by + the function that creates it. There was only one place in the code where + this was missing, in the iplookup router, which I don't think anybody now + uses, but I've fixed it anyway. + +PH/72 Make dns_again_means_nonexist apply to lookups using gethostbyname() as + well as to direct DNS lookups. Otherwise the handling of names in host + lists is inconsistent and therefore confusing. + + +Exim version 4.60 +----------------- + +PH/01 Two changes to the default runtime configuration: + + (1) Move the checks for relay_from_hosts and authenticated clients from + after to before the (commented out) DNS black list checks. + + (2) Add control=submission to the relay_from_hosts and authenticated + clients checks, on the grounds that messages accepted by these + statements are most likely to be submissions. + +PH/02 Several tidies to the handling of ${prvs and ${prvscheck: + + (1) Generate an error if the third argument for the ${prvs expansion is + not a single digit. + + (2) Treat a missing third argument of ${prvscheck as if it were an empty + string. + + (3) Reset the variables that are obtained from the first argument of + ${prvscheck and used in the second argument before leaving the code, + because their memory is reclaimed, so using them afterwards may do + silly things. + + (4) Tidy up the code for expanding the arguments of ${prvscheck one by + one (it's much easier than Tom thought :-). + + (5) Because of (4), we can now allow for the use of $prvscheck_result + inside the third argument. + +PH/03 For some reason, the default setting of PATH when running a command from + a pipe transport was just "/usr/bin". I have changed it to + "/bin:/usr/bin". + +PH/04 SUPPORT_TRANSLATE_IP_ADDRESS and MOVE_FROZEN_MESSAGES did not cause + anything to be listed in the output from -bV. + +PH/05 When a filter generated an autoreply, the entire To: header line was + quoted in the delivery log line, like this: + + => >A.N.Other ... + + This has been changed so that it extracts the operative address. There + may be more than one such address. If so, they are comma-separated, like + this: + + => >ano@some.domain,ona@other.domain ... + +PH/06 When a client host used a correct literal IP address in a HELO or EHLO + command, (for example, EHLO [1.2.3.4]) and the client's IP address was + not being looked up in the rDNS to get a host name, Exim was showing the + IP address twice in Received: lines, even though the IP addresses were + identical. For example: + + Received: from [1.2.3.4] (helo=[1.2.3.4]) + + However, if the real host name was known, it was omitting the HELO data + 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 +----------------- + +PH/01 The ${base62: operator adjusted itself to base 36 when BASE_62 was + set to 36 (for Darwin and Cygwin), but the ${base62d: operator did not. + It now does. + +PH/02 Two minor problems detected in Cygwin: the os.{c,h} files had lost */ on + the CVS lines, and there was a missing #if HAVE_IPV6 in host.c. + +PH/03 Typo: missing ".o" in src/pcre/Makefile. + +PH/04 Tighten up "personal" tests: Instead of testing for any "List-" + header line, restrict the check to what is listed in RFCs 2369 and 2929. + Also, for "Auto-Submitted", treat anything other than "no" as + non-personal, in accordance with RFC 3834. (Previously it treated + anything starting "auto-" as non-personal.) + +TF/01 The control=submission/name=... option had a problem with syntax + errors if the name included a slash character. The /name= option + now slurps the rest of the string, so it can include any characters + but it must come last in the list of options (after /sender_retain + or /domain=). + +PH/05 Some modifications to the interface to the fake nameserver for the new + testing suite. + + + Exim version 4.53 ----------------- @@ -124,10 +698,106 @@ PH/29 Added "crypteq" to the list of supported features that Exim outputs when PH/30 Fixed (presumably very longstanding) bug in exim_dbmbuild: if it failed because an input line was too long, either on its own, or by virtue of - too many continuations, the temporary file was not being removed. + too many continuations, the temporary file was not being removed, and the + return code was incorrect. PH/31 Missing "BOOL" in function definition in filtertest.c. +PH/32 Applied Sieve patches from the maintainer. + +TK/05 Domainkeys: Accomodate for a minor API change in libdomainkeys 0.67. + +PH/33 Added "verify = not_blind". + +PH/34 There are settings for CHOWN_COMMAND and MV_COMMAND that can be used in + Local/Makefile (with some defaults set). These are used in built scripts + such as exicyclog, but they have never been used in the exim_install + script (though there are many overriding facilities there). I have + arranged that the exim_install script now takes note of these two + settings. + +PH/35 Installed configuration files for Dragonfly. + +PH/36 When a locally submitted message by a trusted user did not contain a + From: header, and the sender address was obtained from -f or from an SMTP + MAIL command, and the trusted user did not use -F to supply a sender + name, $originator_name was incorrectly used when constructing a From: + header. Furthermore, $originator_name was used for submission mode + messages from external hosts without From: headers in a similar way, + which is clearly wrong. + +PH/37 Added control=suppress_local_fixups. + +PH/38 When log_selector = +received_sender was set, and the addition of the + sender made the log line's construction buffer exactly full, or one byte + less than full, an overflow happened when the terminating "\n" was + subsequently added. + +PH/39 Added a new log selector, "unknown_in_list", which provokes a log entry + when the result of a list match is failure because a DNS lookup failed. + +PH/40 RM_COMMAND is now used in the building process. + +PH/41 Added a "distclean" target to the top-level Makefile; it deletes all + the "build-* directories that it finds. + +PH/42 (But a TF fix): In a domain list, Exim incorrectly matched @[] if the IP + address in a domain literal was a prefix of an interface address. + +PH/43 (Again a TF fix): In the dnslookup router, do not apply widen_domains + when verifying a sender address, unless rewrite_headers is false. + +PH/44 Wrote a long comment about why errors_to addresses are verified as + recipients, not senders. + +TF/01 Add missing LIBS=-lm to OS/Makefile-OpenBSD which was overlooked when + the ratelimit ACL was added. + +PH/45 Added $smtp_command for the full command (cf $smtp_command_argument). + +PH/46 Added extra information about PostgreSQL errors to the error string. + +PH/47 Added an interface to a fake DNS resolver for use by the new test suite, + avoiding the need to install special zones in a real server. This is + backwards compatible; if it can't find the fake resolver, it drops back. + Thus, both old and new test suites can be run. + +TF/02 Added util/ratelimit.pl + +TF/03 Minor fix to the ratelimit code to improve its behaviour in case the + clock is set back in time. + +TF/04 Fix the ratelimit support in exim_fixdb. Patch provided by Brian + Candler . + +TF/05 The fix for PH/43 was not completely correct; widen_domains is always + OK for addresses that are the result of redirections. + +PH/48 A number of further additions for the benefit of the new test suite, + including a fake gethostbyname() that interfaces to the fake DNS resolver + (see PH/47 above). + +TF/06 The fix for widen_domains has also been applied to qualify_single and + search_parents which are the other dnslookup options that can cause + header rewrites. + +PH/49 Michael Haardt's randomized retrying, but as a separate retry parameter + type ("H"). + +PH/50 Make never_users, trusted_users, admin_groups, trusted_groups expandable. + +TF/07 Exim produced the error message "an SRV record indicated no SMTP + service" if it encountered an MX record with an empty target hostname. + The message is now "an MX or SRV record indicated no SMTP service". + +TF/08 Change PH/13 introduced the possibility that verify=helo may defer, + if the DNS of the sending site is misconfigured. This is quite a + common situation. This change restores the behaviour of treating a + helo verification defer as a failure. + +PH/51 If self=fail was set on a router, the bounce message did not include the + actual error message. + Exim version 4.52 -----------------