-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.396 2006/09/22 08:41:59 ph10 Exp $
+Change log file for Exim from version 4.21
+-------------------------------------------
+
+
+Exim version 4.86
+-----------------
+JH/01 Bug 1545: The smtp transport option "retry_include_ip_address" is now
+ expanded.
+
+JH/02 The smtp transport option "multi_domain" is now expanded.
+
+JH/03 The smtp transport now requests PRDR by default, if the server offers
+ it.
+
+JH/04 Certificate name checking on server certificates, when exim is a client,
+ is now done by default. The transport option tls_verify_cert_hostname
+ can be used to disable this per-host. The build option
+ EXPERIMENTAL_CERTNAMES is withdrawn.
+
+JH/05 The value of the tls_verify_certificates smtp transport and main options
+ default to the word "system" to access the system default CA bundle.
+ For GnuTLS, only version 3.0.20 or later.
+
+JH/06 Verification of the server certificate for a TLS connection is now tried
+ (but not required) by default. The verification status is now logged by
+ default, for both outbound TLS and client-certificate supplying inbound
+ TLS connections
+
+JH/07 Changed the default rfc1413 lookup settings to disable calls. Few
+ sites use this now.
+
+
+Exim version 4.85
+-----------------
+TL/01 When running the test suite, the README says that variables such as
+ no_msglog_check are global and can be placed anywhere in a specific
+ test's script, however it was observed that placement needed to be near
+ the beginning for it to behave that way. Changed the runtest perl
+ script to read through the entire script once to detect and set these
+ variables, reset to the beginning of the script, and then run through
+ the script parsing/test process like normal.
+
+TL/02 The BSD's have an arc4random API. One of the functions to induce
+ adding randomness was arc4random_stir(), but it has been removed in
+ OpenBSD 5.5. Detect this OpenBSD version and skip calling this
+ function when detected.
+
+JH/01 Expand the EXPERIMENTAL_TPDA feature. Several different events now
+ cause callback expansion.
+
+TL/03 Bugzilla 1518: Clarify "condition" processing in routers; that
+ syntax errors in an expansion can be treated as a string instead of
+ logging or causing an error, due to the internal use of bool_lax
+ instead of bool when processing it.
+
+JH/02 Add EXPERIMENTAL_DANE, allowing for using the DNS as trust-anchor for
+ server certificates when making smtp deliveries.
+
+JH/03 Support secondary-separator specifier for MX, SRV, TLSA lookups.
+
+JH/04 Add ${sort {list}{condition}{extractor}} expansion item.
+
+TL/04 Bugzilla 1216: Add -M (related messages) option to exigrep.
+
+TL/05 GitHub Issue 18: Adjust logic testing for true/false in redis lookups.
+ Merged patch from Sebastian Wiedenroth.
+
+JH/05 Fix results-pipe from transport process. Several recipients, combined
+ with certificate use, exposed issues where response data items split
+ over buffer boundaries were not parsed properly. This eventually
+ resulted in duplicates being sent. This issue only became common enough
+ to notice due to the introduction of conection certificate information,
+ the item size being so much larger. Found and fixed by Wolfgang Breyha.
+
+JH/06 Bug 1533: Fix truncation of items in headers_remove lists. A fixed
+ size buffer was used, resulting in syntax errors when an expansion
+ exceeded it.
+
+JH/07 Add support for directories of certificates when compiled with a GnuTLS
+ version 3.3.6 or later.
+
+JH/08 Rename the TPDA expermimental facility to Event Actions. The #ifdef
+ is EXPERIMENTAL_EVENT, the main-configuration and transport options
+ both become "event_action", the variables become $event_name, $event_data
+ and $event_defer_errno. There is a new variable $verify_mode, usable in
+ routers, transports and related events. The tls:cert event is now also
+ raised for inbound connections, if the main configuration event_action
+ option is defined.
+
+TL/06 In test suite, disable OCSP for old versions of openssl which contained
+ early OCSP support, but no stapling (appears to be less than 1.0.0).
+
+JH/09 When compiled with OpenSSL and EXPERIMENTAL_CERTNAMES, the checks on
+ server certificate names available under the smtp transport option
+ "tls_verify_cert_hostname" now do not permit multi-component wildcard
+ matches.
+
+JH/10 Time-related extraction expansions from certificates now use the main
+ option "timezone" setting for output formatting, and are consistent
+ between OpenSSL and GnuTLS compilations. Bug 1541.
+
+JH/11 Fix a crash in mime ACL when meeting a zero-length parameter in the
+ incoming message.
+
+JH/12 Bug 1527: Autogrow buffer used in reading spool files. Since they now
+ include certificate info, eximon was claiming there were spoolfile
+ syntax errors.
+
+JH/13 Buf 1521: Fix ldap lookup for single-attr request, multiple-attr return.
+
+JH/14 Log delivery-related information more consistently, using the sequence
+ "H=<name> [<ip>]" wherever possible.
+
+
+Exim version 4.84
+-----------------
+TL/01 Bugzilla 1506: Re-add a 'return NULL' to silence complaints from static
+ checkers that were complaining about end of non-void function with no
+ return.
+
+JH/01 Bug 1513: Fix parsing of quoted parameter values in MIME headers.
+ This was a regression intruduced in 4.83 by another bugfix.
+
+JH/02 Fix broken compilation when EXPERIMENTAL_DSN is enabled.
+
+TL/02 Bug 1509: Fix exipick for enhanced spoolfile specification used when
+ EXPERIMENTAL_DSN is enabled. Fix from Wolfgang Breyha.
+
+
+Exim version 4.83
+-----------------
+
+TF/01 Correctly close the server side of TLS when forking for delivery.
+
+ When a message was received over SMTP with TLS, Exim failed to clear up
+ the incoming connection properly after forking off the child process to
+ deliver the message. In some situations the subsequent outgoing
+ delivery connection happened to have the same fd number as the incoming
+ connection previously had. Exim would try to use TLS and fail, logging
+ a "Bad file descriptor" error.
+
+TF/02 Portability fix for building lookup modules on Solaris when the xpg4
+ utilities have not been installed.
+
+JH/01 Fix memory-handling in use of acl as a conditional; avoid free of
+ temporary space as the ACL may create new global variables.
+
+TL/01 LDAP support uses per connection or global context settings, depending
+ upon the detected version of the libraries at build time.
+
+TL/02 Experimental Proxy Protocol support: allows a proxied SMTP connection
+ to extract and use the src ip:port in logging and expansions as if it
+ were a direct connection from the outside internet. PPv2 support was
+ updated based on HAProxy spec change in May 2014.
+
+JH/02 Add ${listextract {number}{list}{success}{fail}}.
+
+TL/03 Bugzilla 1433: Fix DMARC SEGV with specific From header contents.
+ Properly escape header and check for NULL return.
+
+PP/01 Continue incomplete 4.82 PP/19 by fixing docs too: use dns_dnssec_ok
+ not dns_use_dnssec.
+
+JH/03 Bugzilla 1157: support log_selector smtp_confirmation for lmtp.
+
+TL/04 Add verify = header_names_ascii check to reject email with non-ASCII
+ characters in header names, implemented as a verify condition.
+ Contributed by Michael Fischer v. Mollard.
+
+TL/05 Rename SPF condition results err_perm and err_temp to standardized
+ results permerror and temperror. Previous values are deprecated but
+ still accepted. In a future release, err_perm and err_temp will be
+ completely removed, which will be a backward incompatibility if the
+ ACL tests for either of these two old results. Patch contributed by
+ user bes-internal on the mailing list.
+
+JH/04 Add ${utf8clean:} operator. Contributed by Alex Rau.
+
+JH/05 Bugzilla 305: Log incoming-TLS details on rejects, subject to log
+ selectors, in both main and reject logs.
+
+JH/06 Log outbound-TLS and port details, subject to log selectors, for a
+ failed delivery.
+
+JH/07 Add malware type "sock" for talking to simple daemon.
+
+JH/08 Bugzilla 1371: Add tls_{,try_}verify_hosts to smtp transport.
+
+JH/09 Bugzilla 1431: Support (with limitations) headers_add/headers_remove in
+ routers/transports under cutthrough routing.
+
+JH/10 Bugzilla 1005: ACL "condition =" should accept values which are negative
+ numbers. Touch up "bool" conditional to keep the same definition.
+
+TL/06 Remove duplicated language in spec file from 4.82 TL/16.
+
+JH/11 Add dnsdb tlsa lookup. From Todd Lyons.
+
+JH/12 Expand items in router/transport headers_add or headers_remove lists
+ individually rather than the list as a whole. Bug 1452.
+
+ Required for reasonable handling of multiple headers_ options when
+ they may be empty; requires that headers_remove items with embedded
+ colons must have them doubled (or the list-separator changed).
+
+TL/07 Add new dmarc expansion variable $dmarc_domain_policy to directly
+ view the policy declared in the DMARC record. Currently, $dmarc_status
+ is a combined value of both the record presence and the result of the
+ analysis.
+
+JH/13 Fix handling of $tls_cipher et.al. in (non-verify) transport. Bug 1455.
+
+JH/14 New options dnssec_request_domains, dnssec_require_domains on the
+ dnslookup router and the smtp transport (applying to the forward
+ lookup).
+
+TL/08 Bugzilla 1453: New LDAP "SERVERS=" option allows admin to override list
+ of ldap servers used for a specific lookup. Patch provided by Heiko
+ Schlichting.
+
+JH/18 New options dnssec_lax, dnssec_strict on dnsdb lookups.
+ New variable $lookup_dnssec_authenticated for observability.
+
+TL/09 Bugzilla 609: Add -C option to exiqgrep, specify which exim.conf to use.
+ Patch submitted by Lars Timman.
+
+JH/19 EXPERIMENTAL_OCSP support under GnuTLS. Bug 1459.
+
+TL/10 Bugzilla 1454: New -oMm option to pass message reference to Exim.
+ Requires trusted mode and valid format message id, aborts otherwise.
+ Patch contributed by Heiko Schlichting.
+
+JH/20 New expansion variables tls_(in,out)_(our,peer)cert, and expansion item
+ certextract with support for various fields. Bug 1358.
+
+JH/21 Observability of OCSP via variables tls_(in,out)_ocsp. Stapling
+ is requested by default, modifiable by smtp transport option
+ hosts_request_ocsp.
+
+JH/22 Expansion operators ${md5:string} and ${sha1:string} can now
+ operate on certificate variables to give certificate fingerprints
+ Also new ${sha256:cert_variable}.
+
+JH/23 The PRDR feature is moved from being Experimental into the mainline.
+
+TL/11 Bug 1119: fix memory allocation in string_printing2(). Patch from
+ Christian Aistleitner.
+
+JH/24 The OCSP stapling feature is moved from Experimental into the mainline.
+
+TL/12 Bug 1444: Fix improper \r\n sequence handling when writing spool
+ file. Patch from Wolfgang Breyha.
+
+JH/25 Expand the coverage of the delivery $host and $host_address to
+ client authenticators run in verify callout. Bug 1476.
+
+JH/26 Port service names are now accepted for tls_on_connect_ports, to
+ align with daemon_smtp_ports. Bug 72.
+
+TF/03 Fix udpsend. The ip_connectedsocket() function's socket type
+ support and error reporting did not work properly.
+
+TL/13 Bug 1495: Exiqgrep check if -C config file specified on cli exists
+ and is readable. Patch from Andrew Colin Kissa.
+
+TL/14 Enhance documentation of ${run expansion and how it parses the
+ commandline after expansion, particularly in the case when an
+ unquoted variable expansion results in an empty value.
+
+JH/27 The TLS SNI feature was broken in 4.82. Fix it.
+
+PP/02 Fix internal collision of T_APL on systems which support RFC3123
+ by renaming away from it. Addresses GH issue 15, reported by
+ Jasper Wallace.
+
+JH/28 Fix parsing of MIME headers for parameters with quoted semicolons.
+
+TL/15 SECURITY: prevent double expansion in math comparison functions
+ (can expand unsanitized data). Not remotely exploitable.
+ CVE-2014-2972
+
+
+Exim version 4.82
+-----------------
+
+PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
+
+PP/02 Make -n do something, by making it not do something.
+ When combined with -bP, the name of an option is not output.
+
+PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
+ by GnuTLS.
+
+PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
+ $sender_host_name and config options to manage this, and basic check
+ routines.
+
+PP/05 DSCP support for outbound connections and control modifier for inbound.
+
+PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
+ (Only plugin which currently uses this is kerberos4, which nobody should
+ be using, but we should make it available and other future plugins might
+ conceivably use it, even though it would break NAT; stuff *should* be
+ using channel bindings instead).
+
+PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
+ name; added for Sendmail compatibility; requires admin caller.
+ Handle -G as equivalent to "control = suppress_local_fixups" (we used to
+ just ignore it); requires trusted caller.
+ Also parse but ignore: -Ac -Am -X<logfile>
+ Bugzilla 1117.
+
+TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
+
+TL/02 Add +smtp_confirmation as a default logging option.
+
+TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
+ Patch by Magnus Holmgren from 2007-02-20.
+
+TL/04 Bugzilla 1281 - Spec typo.
+ Bugzilla 1283 - Spec typo.
+ Bugzilla 1290 - Spec grammar fixes.
+
+TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
+
+TL/06 Add Experimental DMARC support using libopendmarc libraries.
+
+TL/07 Fix an out of order global option causing a segfault. Reported to dev
+ mailing list by by Dmitry Isaikin.
+
+JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
+
+JH/02 Support "G" suffix to numbers in ${if comparisons.
+
+PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
+
+NM/01 Bugzilla 1197 - Spec typo
+ Bugzilla 1196 - Spec examples corrections
+
+JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
+
+PP/09 Add gnutls_allow_auto_pkcs11 option (was originally called
+ gnutls_enable_pkcs11, but renamed to more accurately indicate its
+ function.
+
+PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
+ Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
+
+JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
+ "acl {{name}{arg}...}", and optional args on acl condition
+ "acl = name arg..."
+
+JH/05 Permit multiple router/transport headers_add/remove lines.
+
+JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
+
+JH/07 Avoid using a waiting database for a single-message-only transport.
+ Performance patch from Paul Fisher. Bugzilla 1262.
+
+JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
+ Bugzilla 884.
+
+JH/09 Add $headers_added variable, with content from use of ACL modifier
+ add_header (but not yet added to the message). Bugzilla 199.
+
+JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
+ Pulled from Bugzilla 817 by Wolfgang Breyha.
+
+PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
+ CVE-2012-5671
+ (nb: this is the same fix as in Exim 4.80.1)
+
+JH/11 Add A= logging on delivery lines, and a client_set_id option on
+ authenticators.
+
+JH/12 Add optional authenticated_sender logging to A= and a log_selector
+ for control.
+
+PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
+
+PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
+ advertise SMTP AUTH mechanism to us, instead of a generic
+ protocol violation error. Also, make Exim more robust to bad
+ data from the Dovecot auth socket.
+
+TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
+
+ When a queue runner is handling a message, Exim first routes the
+ recipient addresses, during which it prunes them based on the retry
+ hints database. After that it attempts to deliver the message to
+ any remaining recipients. It then updates the hints database using
+ the retry rules.
+
+ So if a recipient address works intermittently, it can get repeatedly
+ deferred at routing time. The retry hints record remains fresh so the
+ address never reaches the final cutoff time.
+
+ This is a fairly common occurrence when a user is bumping up against
+ their storage quota. Exim had some logic in its local delivery code
+ to deal with this. However it did not apply to per-recipient defers
+ in remote deliveries, e.g. over LMTP to a separate IMAP message store.
+
+ This change adds a proper retry rule check during routing so that the
+ final cutoff time is checked against the message's age. We only do
+ this check if there is an address retry record and there is not a
+ domain retry record; this implies that previous attempts to handle
+ the address had the retry_use_local_parts option turned on. We use
+ this as an approximation for the destination being like a local
+ delivery, as in LMTP.
+
+ I suspect this new check makes the old local delivery cutoff check
+ redundant, but I have not verified this so I left the code in place.
+
+TF/02 Correct gecos expansion when From: is a prefix of the username.
+
+ Test 0254 submits a message to Exim with the header
+
+ Resent-From: f
+
+ When I ran the test suite under the user fanf2, Exim expanded
+ the header to contain my full name, whereas it should have added
+ a Resent-Sender: header. It erroneously treats any prefix of the
+ username as equal to the username.
+
+ This change corrects that bug.
+
+GF/01 DCC debug and logging tidyup
+ Error conditions log to paniclog rather than rejectlog.
+ Debug lines prefixed by "DCC: " to remove any ambiguity.
+
+TF/03 Avoid unnecessary rebuilds of lookup-related code.
+
+PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
+ Bug spotted by Jeremy Harris; was flawed since initial commit.
+ Would have resulted in OCSP responses post-SNI triggering an Exim
+ NULL dereference and crash.
+
+JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
+
+PP/15 Define SIOCGIFCONF_GIVES_ADDR for GNU Hurd.
+ Bug detection, analysis and fix by Samuel Thibault.
+ Bugzilla 1331, Debian bug #698092.
+
+SC/01 Update eximstats to watch out for senders sending 'HELO [IpAddr]'
+
+JH/14 SMTP PRDR (http://www.eric-a-hall.com/specs/draft-hall-prdr-00.txt).
+ Server implementation by Todd Lyons, client by JH.
+ Only enabled when compiled with EXPERIMENTAL_PRDR. A new
+ config variable "prdr_enable" controls whether the server
+ advertises the facility. If the client requests PRDR a new
+ acl_data_smtp_prdr ACL is called once for each recipient, after
+ the body content is received and before the acl_smtp_data ACL.
+ The client is controlled by bolth of: a hosts_try_prdr option
+ on the smtp transport, and the server advertisement.
+ Default client logging of deliveries and rejections involving
+ PRDR are flagged with the string "PRDR".
+
+PP/16 Fix problems caused by timeouts during quit ACLs trying to double
+ fclose(). Diagnosis by Todd Lyons.
+
+PP/17 Update configure.default to handle IPv6 localhost better.
+ Patch by Alain Williams (plus minor tweaks).
+ Bugzilla 880.
+
+PP/18 OpenSSL made graceful with empty tls_verify_certificates setting.
+ This is now consistent with GnuTLS, and is now documented: the
+ previous undocumented portable approach to treating the option as
+ unset was to force an expansion failure. That still works, and
+ an empty string is now equivalent.
+
+PP/19 Renamed DNSSEC-enabling option to "dns_dnssec_ok", to make it
+ clearer that Exim is using the DO (DNSSEC OK) EDNS0 resolver flag,
+ not performing validation itself.
+
+PP/20 Added force_command boolean option to pipe transport.
+ Patch from Nick Koston, of cPanel Inc.
+
+JH/15 AUTH support on callouts (and hence cutthrough-deliveries).
+ Bugzilla 321, 823.
+
+TF/04 Added udpsend ACL modifer and hexquote expansion operator
+
+PP/21 Fix eximon continuous updating with timestamped log-files.
+ Broken in a format-string cleanup in 4.80, missed when I repaired the
+ other false fix of the same issue.
+ Report and fix from Heiko Schlichting.
+ Bugzilla 1363.
+
+PP/22 Guard LDAP TLS usage against Solaris LDAP variant.
+ Report from Prashanth Katuri.
+
+PP/23 Support safari_ecdhe_ecdsa_bug for openssl_options.
+ It's SecureTransport, so affects any MacOS clients which use the
+ system-integrated TLS libraries, including email clients.
+
+PP/24 Fix segfault from trying to fprintf() to a NULL stdio FILE* if
+ using a MIME ACL for non-SMTP local injection.
+ Report and assistance in diagnosis by Warren Baker.
+
+TL/08 Adjust exiqgrep to be case-insensitive for sender/receiver.
+
+JH/16 Fix comparisons for 64b. Bugzilla 1385.
+
+TL/09 Add expansion variable $authenticated_fail_id to keep track of
+ last id that failed so it may be referenced in subsequent ACL's.
+
+TL/10 Bugzilla 1375 - Prevent TLS rebinding in ldap. Patch provided by
+ Alexander Miroch.
+
+TL/11 Bugzilla 1382 - Option ldap_require_cert overrides start_tls
+ ldap library initialization, allowing self-signed CA's to be
+ used. Also properly sets require_cert option later in code by
+ using NULL (global ldap config) instead of ldap handle (per
+ session). Bug diagnosis and testing by alxgomz.
+
+TL/12 Enhanced documentation in the ratelimit.pl script provided in
+ the src/util/ subdirectory.
+
+TL/13 Bug 1031 - Imported transport SQL logging patch from Axel Rau
+ renamed to Transport Post Delivery Action by Jeremy Harris, as
+ EXPERIMENTAL_TPDA.
+
+TL/14 Bugzilla 1217 - Redis lookup support has been added. It is only enabled
+ when Exim is compiled with EXPERIMENTAL_REDIS. A new config variable
+ redis_servers = needs to be configured which will be used by the redis
+ lookup. Patch from Warren Baker, of The Packet Hub.
+
+TL/15 Fix exiqsumm summary for corner case. Patch provided by Richard Hall.
+
+TL/16 Bugzilla 1289 - Clarify host/ip processing when have errors looking up a
+ hostname or reverse DNS when processing a host list. Used suggestions
+ from multiple comments on this bug.
+
+TL/17 Bugzilla 1057 - Multiple clamd TCP targets patch from Mark Zealey.
+
+TL/18 Had previously added a -CONTINUE option to runtest in the test suite.
+ Missed a few lines, added it to make the runtest require no keyboard
+ interaction.
+
+TL/19 Bugzilla 1402 - Test 533 fails if any part of the path to the test suite
+ contains upper case chars. Make router use caseful_local_part.
+
+TL/20 Bugzilla 1400 - Add AVOID_GNUTLS_PKCS11 build option. Allows GnuTLS
+ support when GnuTLS has been built with p11-kit.
+
+
+Exim version 4.80.1
+-------------------
+
+PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
+ CVE-2012-5671
+ This, or similar/improved, will also be change PP/11 of 4.82.
+
+
+Exim version 4.80
+-----------------
+
+PP/01 Handle short writes when writing local log-files.
+ In practice, only affects FreeBSD (8 onwards).
+ Bugzilla 1053, with thanks to Dmitry Isaikin.
+
+NM/01 Bugzilla 949 - Documentation tweak
+
+NM/02 Bugzilla 1093 - eximstats DATA reject detection regexps
+ improved.
+
+NM/03 Bugzilla 1169 - primary_hostname spelling was incorrect in docs.
+
+PP/02 Implemented gsasl authenticator.
+
+PP/03 Implemented heimdal_gssapi authenticator with "server_keytab" option.
+
+PP/04 Local/Makefile support for (AUTH|LOOKUP)_*_PC=foo to use
+ `pkg-config foo` for cflags/libs.
+
+PP/05 Swapped $auth1/$auth2 for gsasl GSSAPI mechanism, to be more consistent
+ with rest of GSASL and with heimdal_gssapi.
+
+PP/06 Local/Makefile support for USE_(GNUTLS|OPENSSL)_PC=foo to use
+ `pkg-config foo` for cflags/libs for the TLS implementation.
+
+PP/07 New expansion variable $tls_bits; Cyrus SASL server connection
+ properties get this fed in as external SSF. A number of robustness
+ and debugging improvements to the cyrus_sasl authenticator.
+
+PP/08 cyrus_sasl server now expands the server_realm option.
+
+PP/09 Bugzilla 1214 - Log authentication information in reject log.
+ Patch by Jeremy Harris.
+
+PP/10 Added dbmjz lookup type.
+
+PP/11 Let heimdal_gssapi authenticator take a SASL message without an authzid.
+
+PP/12 MAIL args handles TAB as well as SP, for better interop with
+ non-compliant senders.
+ Analysis and variant patch by Todd Lyons.
+
+NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
+ Bug report from Lars Müller <lars@samba.org> (via SUSE),
+ Patch from Dirk Mueller <dmueller@suse.com>
+
+PP/13 tls_peerdn now print-escaped for spool files.
+ Observed some $tls_peerdn in wild which contained \n, which resulted
+ in spool file corruption.
+
+PP/14 TLS fixes for OpenSSL: support TLS 1.1 & 1.2; new "openssl_options"
+ values; set SSL_MODE_AUTO_RETRY so that OpenSSL will retry a read
+ or write after TLS renegotiation, which otherwise led to messages
+ "Got SSL error 2".
+
+TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
+ as a tracking header (ie: a signed header comes before the signature).
+ Patch from Wolfgang Breyha.
+
+JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
+ comma-sep list; embedded commas doubled.
+
+JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
+
+PP/15 LDAP: Check for errors of TLS initialisation, to give correct
+ diagnostics.
+ Report and patch from Dmitry Banschikov.
+
+PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
+ Removed SSL_clear() after SSL_new() which led to protocol negotiation
+ failures. We appear to now support TLS1.1+ with Exim.
+
+PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
+ lets Exim select keys and certificates based upon TLS SNI from client.
+ Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
+ before an outbound SMTP session. New log_selector, +tls_sni.
+
+PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
+ NULL dereference. Report and patch from Alun Jones.
+
+PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
+ on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
+ Not seeing resolver debug output on NetBSD, but suspect this is a
+ resolver implementation change.
+
+PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
+ Left warnings. Added "eximon gdb" invocation mode.
+
+PP/21 Defaulting "accept_8bitmime" to true, not false.
+
+PP/22 Added -bw for inetd wait mode support.
+
+PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
+ locate the relevant includes and libraries. Made this the default.
+
+PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
+ Bugzilla 1246, report and most of solution from Tomasz Kusy.
+
+JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
+ This may cause build issues on older platforms.
+
+PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
+ gnutls_priority_init, ignoring Exim options gnutls_require_kx,
+ gnutls_require_mac & gnutls_require_protocols (no longer supported).
+ Added SNI support via GnuTLS too.
+ Made ${randint:..} supplier available, if using not-too-old GnuTLS.
+
+PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
+
+PP/27 Applied dnsdb SPF support patch from Janne Snabb.
+ Applied second patch from Janne, implementing suggestion to default
+ multiple-strings-in-record handling to match SPF spec.
+
+JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
+
+PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
+ read-only, out of scope).
+ Patch from Wolfgang Breyha, report from Stuart Northfield.
+
+PP/29 Fix three issues highlighted by clang analyser static analysis.
+ Only crash-plausible issue would require the Cambridge-specific
+ iplookup router and a misconfiguration.
+ Report from Marcin Mirosław.
+
+PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
+
+PP/31 %D in printf continues to cause issues (-Wformat=security), so for
+ now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
+ As part of this, removing so much warning spew let me fix some minor
+ real issues in debug logging.
+
+PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
+ assignment on my part. Fixed.
+
+PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
+ of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
+ Janne Snabb (who went above and beyond: thank you).
+
+PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
+ string otherwise requires a connection and a bunch more work and it's
+ relatively easy to get wrong. Should also expose TLS library linkage
+ problems.
+
+PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
+ 64-bit ${eval} (JH/03).
+
+PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
+ GNU libc to support some of the 64-bit stuff, should not lead to
+ conflicts. Defined before os.h is pulled in, so if a given platform
+ needs to override this, it can.
+
+PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
+ protection layer was required, which is not implemented.
+ Bugzilla 1254, patch from Wolfgang Breyha.
+
+PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
+ into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
+ tls_dhparam take prime identifiers. Also unbreak combination of
+ OpenSSL+DH_params+TLSSNI.
+
+PP/39 Disable SSLv2 by default in OpenSSL support.
+
+
+Exim version 4.77
+-----------------
+
+PP/01 Solaris build fix for Oracle's LDAP libraries.
+ Bugzilla 1109, patch from Stephen Usher.
+
+TF/01 HP/UX build fix: avoid arithmetic on a void pointer.
+
+TK/01 DKIM Verification: Fix relaxed canon for empty headers w/o
+ whitespace trailer
+
+TF/02 Fix a couple more cases where we did not log the error message
+ when unlink() failed. See also change 4.74-TF/03.
+
+TF/03 Make the exiwhat support code safe for signals. Previously Exim might
+ lock up or crash if it happened to be inside a call to libc when it
+ got a SIGUSR1 from exiwhat.
+
+ The SIGUSR1 handler appends the current process status to the process
+ log which is later printed by exiwhat. It used to use the general
+ purpose logging code to do this, but several functions it calls are
+ not safe for signals.
+
+ The new output code in the SIGUSR1 handler is specific to the process
+ log, and simple enough that it's easy to inspect for signal safety.
+ Removing some special cases also simplifies the general logging code.
+ Removing the spurious timestamps from the process log simplifies
+ exiwhat.
+
+TF/04 Improved ratelimit ACL condition.
+
+ The /noupdate option has been deprecated in favour of /readonly which
+ has clearer semantics. The /leaky, /strict, and /readonly update modes
+ are mutually exclusive. The update mode is no longer included in the
+ database key; it just determines when the database is updated. (This
+ means that when you upgrde Exim will forget old rate measurements.)
+
+ Exim now checks that the per_* options are used with an update mode that
+ makes sense for the current ACL. For example, when Exim is processing a
+ message (e.g. acl_smtp_rcpt or acl_smtp_data, etc.) you can specify
+ per_mail/leaky or per_mail/strict; otherwise (e.g. in acl_smtp_helo) you
+ must specify per_mail/readonly. If you omit the update mode it defaults to
+ /leaky where that makes sense (as before) or /readonly where required.
+
+ The /noupdate option is now undocumented but still supported for
+ backwards compatibility. It is equivalent to /readonly except that in
+ ACLs where /readonly is required you may specify /leaky/noupdate or
+ /strict/noupdate which are treated the same as /readonly.
+
+ A useful new feature is the /count= option. This is a generalization
+ of the per_byte option, so that you can measure the throughput of other
+ aggregate values. For example, the per_byte option is now equivalent
+ to per_mail/count=${if >{0}{$message_size} {0} {$message_size} }.
+
+ The per_rcpt option has been generalized using the /count= mechanism
+ (though it's more complicated than the per_byte equivalence). When it is
+ used in acl_smtp_rcpt, the per_rcpt option adds recipients to the
+ measured rate one at a time; if it is used later (e.g. in acl_smtp_data)
+ or in a non-SMTP ACL it adds all the recipients in one go. (The latter
+ /count=$recipients_count behaviour used to work only in non-SMTP ACLs.)
+ Note that using per_rcpt with a non-readonly update mode in more than
+ one ACL will cause the recipients to be double-counted. (The per_mail
+ and per_byte options don't have this problem.)
+
+ The handling of very low rates has changed slightly. If the computed rate
+ is less than the event's count (usually one) then this event is the first
+ after a long gap. In this case the rate is set to the same as this event's
+ count, so that the first message of a spam run is counted properly.
+
+ The major new feature is a mechanism for counting the rate of unique
+ events. The new per_addr option counts the number of different
+ recipients that someone has sent messages to in the last time period. It
+ behaves like per_rcpt if all the recipient addresses are different, but
+ duplicate recipient addresses do not increase the measured rate. Like
+ the /count= option this is a general mechanism, so the per_addr option
+ is equivalent to per_rcpt/unique=$local_part@$domain. You can, for
+ example, measure the rate that a client uses different sender addresses
+ with the options per_mail/unique=$sender_address. There are further
+ details in the main documentation.
+
+TF/05 Removed obsolete $Cambridge$ CVS revision strings.
+
+TF/06 Removed a few PCRE remnants.
+
+TF/07 Automatically extract Exim's version number from tags in the git
+ repository when doing development or release builds.
+
+PP/02 Raise smtp_cmd_buffer_size to 16kB.
+ Bugzilla 879. Patch from Paul Fisher.
+
+PP/03 Implement SSL-on-connect outbound with protocol=smtps on smtp transport.
+ Heavily based on revision 40f9a89a from Simon Arlott's tree.
+ Bugzilla 97.
+
+PP/04 Use .dylib instead of .so for dynamic library loading on MacOS.
+
+PP/05 Variable $av_failed, true if the AV scanner deferred.
+ Bugzilla 1078. Patch from John Horne.
+
+PP/06 Stop make process more reliably on build failure.
+ Bugzilla 1087. Patch from Heiko Schlittermann.
+
+PP/07 Make maildir_use_size_file an _expandable_ boolean.
+ Bugzilla 1089. Patch from Heiko Schlittermann.
+
+PP/08 Handle ${run} returning more data than OS pipe buffer size.
+ Bugzilla 1131. Patch from Holger Weiß.
+
+PP/09 Handle IPv6 addresses with SPF.
+ Bugzilla 860. Patch from Wolfgang Breyha.
+
+PP/10 GnuTLS: support TLS 1.2 & 1.1.
+ Bugzilla 1156.
+ Use gnutls_certificate_verify_peers2() [patch from Andreas Metzler].
+ Bugzilla 1095.
+
+PP/11 match_* no longer expand right-hand-side by default.
+ New compile-time build option, EXPAND_LISTMATCH_RHS.
+ New expansion conditions, "inlist", "inlisti".
+
+PP/12 fix uninitialised greeting string from PP/03 (smtps client support).
+
+PP/13 shell and compiler warnings fixes for RC1-RC4 changes.
+
+PP/14 fix log_write() format string regression from TF/03.
+ Bugzilla 1152. Patch from Dmitry Isaikin.
+
+
+Exim version 4.76
+-----------------
+
+PP/01 The new ldap_require_cert option would segfault if used. Fixed.
+
+PP/02 Harmonised TLS library version reporting; only show if debugging.
+ Layout now matches that introduced for other libraries in 4.74 PP/03.
+
+PP/03 New openssl_options items: no_sslv2 no_sslv3 no_ticket no_tlsv1
+
+PP/04 New "dns_use_edns0" global option.
+
+PP/05 Don't segfault on misconfiguration of ref:name exim-user as uid.
+ Bugzilla 1098.
+
+PP/06 Extra paranoia around buffer usage at the STARTTLS transition.
+ nb: Exim is not vulnerable to http://www.kb.cert.org/vuls/id/555316
+
+TK/01 Updated PolarSSL code to 0.14.2.
+ Bugzilla 1097. Patch from Andreas Metzler.
+
+PP/07 Catch divide-by-zero in ${eval:...}.
+ Fixes bugzilla 1102.
+
+PP/08 Condition negation of bool{}/bool_lax{} did not negate. Fixed.
+ Bugzilla 1104.
+
+TK/02 Bugzilla 1106: CVE-2011-1764 - DKIM log line was subject to a
+ format-string attack -- SECURITY: remote arbitrary code execution.
+
+TK/03 SECURITY - DKIM signature header parsing was double-expanded, second
+ time unintentionally subject to list matching rules, letting the header
+ cause arbitrary Exim lookups (of items which can occur in lists, *not*
+ arbitrary string expansion). This allowed for information disclosure.
+
+PP/09 Fix another SIGFPE (x86) in ${eval:...} expansion, this time related to
+ INT_MIN/-1 -- value coerced to INT_MAX.
+
+
+Exim version 4.75
+-----------------
+
+NM/01 Workround for PCRE version dependency in version reporting
+ Bugzilla 1073
+
+TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
+ This fixes portability to compilers other than gcc, notably
+ Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
+
+TF/02 Bugzilla 139: Avoid using the += operator in the modular lookup
+ makefiles for portability to HP-UX and POSIX correctness.
+
+PP/01 Permit LOOKUP_foo enabling on the make command-line.
+ Also via indented variable definition in the Makefile.
+ (Debugging by Oliver Heesakkers).
+
+PP/02 Restore caching of spamd results with expanded spamd_address.
+ Patch from author of expandable spamd_address patch, Wolfgang Breyha.
+
+PP/03 Build issue: lookups-Makefile now exports LC_ALL=C
+ Improves build reliability. Fix from: Frank Elsner
+
+NM/02 Fix wide character breakage in the rfc2047 coding
+ Fixes bug 1064. Patch from Andrey N. Oktyabrski
+
+NM/03 Allow underscore in dnslist lookups
+ Fixes bug 1026. Patch from Graeme Fowler
+
+PP/04 Bugzilla 230: Support TLS-enabled LDAP (in addition to ldaps).
+ Code patches from Adam Ciarcinski of NetBSD.
+
+NM/04 Fixed exiqgrep to cope with mailq missing size issue
+ Fixes bug 943.
+
+PP/05 Bugzilla 1083: when lookup expansion defers, escape the output which
+ is logged, to avoid truncation. Patch from John Horne.
+
+PP/06 Bugzilla 1042: implement freeze_signal on pipe transports.
+ Patch from Jakob Hirsch.
+
+PP/07 Bugzilla 1061: restrict error messages sent over SMTP to not reveal
+ SQL string expansion failure details.
+ Patch from Andrey Oktyabrski.
+
+PP/08 Bugzilla 486: implement %M datestamping in log filenames.
+ Patch from Simon Arlott.
+
+PP/09 New lookups functionality failed to compile on old gcc which rejects
+ extern declarations in function scope.
+ Patch from Oliver Fleischmann
+
+PP/10 Use sig_atomic_t for flags set from signal handlers.
+ Check getgroups() return and improve debugging.
+ Fixed developed for diagnosis in bug 927 (which turned out to be
+ a kernel bug).
+
+PP/11 Bugzilla 1055: Update $message_linecount for maildir_tag.
+ Patch from Mark Zealey.
+
+PP/12 Bugzilla 1056: Improved spamd server selection.
+ Patch from Mark Zealey.
+
+PP/13 Bugzilla 1086: Deal with maildir quota file races.
+ Based on patch from Heiko Schlittermann.
+
+PP/14 Bugzilla 1019: DKIM multiple signature generation fix.
+ Patch from Uwe Doering, sign-off by Michael Haardt.
+
+NM/05 Fix to spam.c to accommodate older gcc versions which dislike
+ variable declaration deep within a block. Bug and patch from
+ Dennis Davis.
+
+PP/15 lookups-Makefile IRIX compatibilty coercion.
+
+PP/16 Make DISABLE_DKIM build knob functional.
+
+NM/06 Bugzilla 968: child_open_uid: restore default SIGPIPE handler
+ Patch by Simon Arlott
+
+TF/03 Fix valgrind.h portability to C89 compilers that do not support
+ variable argument macros. Our copy now differs from upstream.
+
+
+Exim version 4.74
+-----------------
+
+TF/01 Failure to get a lock on a hints database can have serious
+ consequences so log it to the panic log.
+
+TF/02 Log LMTP confirmation messages in the same way as SMTP,
+ controlled using the smtp_confirmation log selector.
+
+TF/03 Include the error message when we fail to unlink a spool file.
+
+DW/01 Bugzilla 139: Support dynamically loaded lookups as modules.
+ With thanks to Steve Haslam, Johannes Berg & Serge Demonchaux
+ for maintaining out-of-tree patches for some time.
+
+PP/01 Bugzilla 139: Documentation and portability issues.
+ Avoid GNU Makefile-isms, let Exim continue to build on BSD.
+ Handle per-OS dynamic-module compilation flags.
+
+PP/02 Let /dev/null have normal permissions.
+ The 4.73 fixes were a little too stringent and complained about the
+ permissions on /dev/null. Exempt it from some checks.
+ Reported by Andreas M. Kirchwitz.
+
+PP/03 Report version information for many libraries, including
+ Exim version information for dynamically loaded libraries. Created
+ version.h, now support a version extension string for distributors
+ who patch heavily. Dynamic module ABI change.
+
+PP/04 CVE-2011-0017 - check return value of setuid/setgid. This is a
+ privilege escalation vulnerability whereby the Exim run-time user
+ can cause root to append content of the attacker's choosing to
+ arbitrary files.
+
+PP/05 Bugzilla 1041: merged DCC maintainer's fixes for return code.
+ (Wolfgang Breyha)
+
+PP/06 Bugzilla 1071: fix delivery logging with untrusted macros.
+ If dropping privileges for untrusted macros, we disabled normal logging
+ on the basis that it would fail; for the Exim run-time user, this is not
+ the case, and it resulted in successful deliveries going unlogged.
+ Fixed. Reported by Andreas Metzler.
+
+
+Exim version 4.73
+-----------------
+
+PP/01 Date: & Message-Id: revert to normally being appended to a message,
+ only prepend for the Resent-* case. Fixes regression introduced in
+ Exim 4.70 by NM/22 for Bugzilla 607.
+
+PP/02 Include check_rfc2047_length in configure.default because we're seeing
+ increasing numbers of administrators be bitten by this.
+
+JJ/01 Added DISABLE_DKIM and comment to src/EDITME
+
+PP/03 Bugzilla 994: added openssl_options main configuration option.
+
+PP/04 Bugzilla 995: provide better SSL diagnostics on failed reads.
+
+PP/05 Bugzilla 834: provide a permit_coredump option for pipe transports.
+
+PP/06 Adjust NTLM authentication to handle SASL Initial Response.
+
+PP/07 If TLS negotiated an anonymous cipher, we could end up with SSL but
+ without a peer certificate, leading to a segfault because of an
+ assumption that peers always have certificates. Be a little more
+ paranoid. Problem reported by Martin Tscholak.
+
+PP/08 Bugzilla 926: switch ClamAV to use the new zINSTREAM API for content
+ filtering; old API available if built with WITH_OLD_CLAMAV_STREAM=yes
+ NB: ClamAV planning to remove STREAM in "middle of 2010".
+ CL also introduces -bmalware, various -d+acl logging additions and
+ more caution in buffer sizes.
+
+PP/09 Implemented reverse_ip expansion operator.
+
+PP/10 Bugzilla 937: provide a "debug" ACL control.
+
+PP/11 Bugzilla 922: Documentation dusting, patch provided by John Horne.
+
+PP/12 Bugzilla 973: Implement --version.
+
+PP/13 Bugzilla 752: Refuse to build/run if Exim user is root/0.
+
+PP/14 Build without WITH_CONTENT_SCAN. Path from Andreas Metzler.
+
+PP/15 Bugzilla 816: support multiple condition rules on Routers.
+
+PP/16 Add bool_lax{} expansion operator and use that for combining multiple
+ condition rules, instead of bool{}. Make both bool{} and bool_lax{}
+ ignore trailing whitespace.
+
+JJ/02 prevent non-panic DKIM error from being sent to paniclog
+
+JJ/03 added tcp_wrappers_daemon_name to allow host entries other than
+ "exim" to be used
+
+PP/17 Fix malware regression for cmdline scanner introduced in PP/08.
+ Notification from Dr Andrew Aitchison.
+
+PP/18 Change ClamAV response parsing to be more robust and to handle ClamAV's
+ ExtendedDetectionInfo response format.
+ Notification from John Horne.
+
+PP/19 OpenSSL 1.0.0a compatibility const-ness change, should be backwards
+ compatible.
+
+PP/20 Added a CONTRIBUTING file. Fixed the documentation build to use http:
+ XSL and documented dependency on system catalogs, with examples of how
+ it normally works.
+
+DW/21 Added Valgrind hooks in store.c to help it capture out-of-bounds store
+ access.
+
+DW/22 Bugzilla 1044: CVE-2010-4345 - partial fix: restrict default behaviour
+ of CONFIGURE_OWNER and CONFIGURE_GROUP options to no longer allow a
+ configuration file which is writeable by the Exim user or group.
+
+DW/23 Bugzilla 1044: CVE-2010-4345 - part two: extend checks for writeability
+ of configuration files to cover files specified with the -C option if
+ they are going to be used with root privileges, not just the default
+ configuration file.
+
+DW/24 Bugzilla 1044: CVE-2010-4345 - part three: remove ALT_CONFIG_ROOT_ONLY
+ option (effectively making it always true).
+
+DW/25 Add TRUSTED_CONFIG_PREFIX_FILE option to allow alternative configuration
+ files to be used while preserving root privileges.
+
+DW/26 Set FD_CLOEXEC on SMTP sockets after forking in the daemon, to ensure
+ that rogue child processes cannot use them.
+
+PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
+ run-time user, instead of root.
+
+PP/28 Add WHITELIST_D_MACROS option to let some macros be overridden by the
+ Exim run-time user without dropping privileges.
+
+DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
+ result string, instead of calling string_vformat() twice with the same
+ arguments.
+
+DW/30 Allow TRUSTED_CONFIG_PREFIX_FILE only for Exim or CONFIGURE_OWNER, not
+ for other users. Others should always drop root privileges if they use
+ -C on the command line, even for a whitelisted configure file.
+
+DW/31 Turn TRUSTED_CONFIG_PREFIX_FILE into TRUSTED_CONFIG_FILE. No prefixes.
+
+NM/01 Fixed bug #1002 - Message loss when using multiple deliveries
+
+
+Exim version 4.72
+-----------------
+
+JJ/01 installed exipick 20100104.1, adding $max_received_linelength,
+ $data_path, and $header_path variables; fixed documentation bugs and
+ typos
+
+JJ/02 installed exipick 20100222.0, added --input-dir and --finput to allow
+ exipick to access non-standard spools, including the "frozen" queue
+ (Finput)
+
+NM/01 Bugzilla 965: Support mysql stored procedures.
+ Patch from Alain Williams
+
+NM/02 Bugzilla 961: Spacing fix (syntax error) on Makefile directives for NetBSD
+
+NM/03 Bugzilla 955: Documentation fix for max_rcpts.
+ Patch from Andreas Metzler
+
+NM/04 Bugzilla 954: Fix for unknown responses from Dovecot authenticator.
+ Patch from Kirill Miazine
+
+NM/05 Bugzilla 671: Added umask to procmail example.
+
+JJ/03 installed exipick 20100323.0, fixing doc bug
+
+NM/06 Bugzilla 988: CVE-2010-2023 - prevent hardlink attack on sticky mail
+ directory. Notification and patch from Dan Rosenberg.
+
+TK/01 PDKIM: Upgrade PolarSSL files to upstream version 0.12.1.
+
+TK/02 Improve log output when DKIM signing operation fails.
+
+MH/01 Treat the transport option dkim_domain as a colon separated
+ list, not as a single string, and sign the message with each element,
+ omitting multiple occurences of the same signer.
+
+NM/07 Null terminate DKIM strings, Null initialise DKIM variable
+ Bugzilla 985, 986. Patch by Simon Arlott
+
+NM/08 Bugzilla 967. dnsdb DNS TXT record bug fix (DKIM-related)
+ Patch by Simon Arlott
+
+PP/01 Bugzilla 989: CVE-2010-2024 - work round race condition on
+ MBX locking. Notification from Dan Rosenberg.
+
+
+Exim version 4.71
+-----------------
+
+TK/01 Bugzilla 912: Fix DKIM segfault on empty headers/body.
+
+NM/01 Bugzilla 913: Documentation fix for gnutls_* options.
+
+NM/02 Bugzilla 722: Documentation for randint. Better randomness defaults.
+
+NM/03 Bugzilla 847: Enable DNSDB lookup by default.
+
+NM/04 Bugzilla 915: Flag broken perl installation during build.
+
+
+Exim version 4.70
+-----------------
+
+TK/01 Added patch by Johannes Berg that expands the main option
+ "spamd_address" if it starts with a dollar sign.
+
+TK/02 Write list of recipients to X-Envelope-Sender header when building
+ the mbox-format spool file for content scanning (suggested by Jakob
+ Hirsch).
+
+TK/03 Added patch by Wolfgang Breyha that adds experimental DCC
+ (http://www.dcc-servers.net/) support via dccifd. Activated by
+ setting EXPERIMENTAL_DCC=yes in Local/Makefile.
+
+TK/04 Bugzilla 673: Add f-protd malware scanner support. Patch submitted
+ by Mark Daniel Reidel <mr@df.eu>.
+
+NM/01 Bugzilla 657: Embedded PCRE removed from the exim source tree.
+ When building exim an external PCRE library is now needed -
+ PCRE is a system library on the majority of modern systems.
+ See entry on PCRE_LIBS in EDITME file.
+
+NM/02 Bugzilla 646: Removed unwanted C/R in Dovecot authenticator
+ conversation. Added nologin parameter to request.
+ Patch contributed by Kirill Miazine.
+
+TF/01 Do not log submission mode rewrites if they do not change the address.
+
+TF/02 Bugzilla 662: Fix stack corruption before exec() in daemon.c.
+
+NM/03 Bugzilla 602: exicyclog now handles panic log, and creates empty
+ log files in place. Contributed by Roberto Lima.
+
+NM/04 Bugzilla 667: Close socket used by dovecot authenticator.
+
+TF/03 Bugzilla 615: When checking the local_parts router precondition
+ after a local_part_suffix or local_part_prefix option, Exim now
+ does not use the address's named list lookup cache, since this
+ contains cached lookups for the whole local part.
+
+NM/05 Bugzilla 521: Integrated SPF Best Guess support contributed by
+ Robert Millan. Documentation is in experimental-spec.txt.
+
+TF/04 Bugzilla 668: Fix parallel build (make -j).
+
+NM/05.2 Bugzilla 437: Prevent Maildir aux files being created with mode 000.
+
+NM/05.3 Bugzilla 598: Improvement to Dovecot authenticator handling.
+ Patch provided by Jan Srzednicki.
+
+TF/05 Leading white space used to be stripped from $spam_report which
+ wrecked the formatting. Now it is preserved.
+
+TF/06 Save $spam_score, $spam_bar, and $spam_report in spool files, so
+ that they are available at delivery time.
+
+TF/07 Fix the way ${extract is skipped in the untaken branch of a conditional.
+
+TF/08 TLS error reporting now respects the incoming_interface and
+ incoming_port log selectors.
+
+TF/09 Produce a more useful error message if an SMTP transport's hosts
+ setting expands to an empty string.
+
+NM/06 Bugzilla 744: EXPN did not work under TLS.
+ Patch provided by Phil Pennock.
+
+NM/07 Bugzilla 769: Extraneous comma in usage fprintf
+ Patch provided by Richard Godbee.
+
+NM/08 Fixed erroneous documentation references to smtp_notquit_acl to be
+ acl_smtp_notquit, added index entry.
+
+NM/09 Bugzilla 787: Potential buffer overflow in string_format.
+ Patch provided by Eugene Bujak.
+
+NM/10 Bugzilla 770: Problem on some platforms modifying the len parameter to
+ accept(). Patch provided by Maxim Dounin.
+
+NM/11 Bugzilla 749: Preserve old behaviour of blanks comparing equal to zero.
+ Patch provided by Phil Pennock.
+
+NM/12 Bugzilla 497: Correct behaviour of exiwhat when no config exists.
+
+NM/13 Bugzilla 590: Correct handling of Resent-Date headers.
+ Patch provided by Brad "anomie" Jorsch.
+
+NM/14 Bugzilla 622: Added timeout setting to transport filter.
+ Patch provided by Dean Brooks.
+
+TK/05 Add native DKIM support (does not depend on external libraries).
+
+NM/15 Bugzilla 854: Removed code that symlinks to pcre as its no longer useful.
+ Patch provided by Graeme Fowler.
+
+NM/16 Bugzilla 851: Documentation example syntax fix.
+
+NM/17 Changed NOTICE file to remove references to embedded PCRE.
+
+NM/18 Bugzilla 894: Fix issue with very long lines including comments in
+ lsearch.
+
+NM/19 Bugzilla 745: TLS version reporting.
+ Patch provided by Phil Pennock.
+
+NM/20 Bugzilla 167: bool: condition support.
+ Patch provided by Phil Pennock.
+
+NM/21 Bugzilla 665: gnutls_compat_mode to allow compatibility with broken
+ clients. Patch provided by Phil Pennock.
+
+NM/22 Bugzilla 607: prepend (not append) Resent-Message-ID and Resent-Date.
+ Patch provided by Brad "anomie" Jorsch.
+
+NM/23 Bugzilla 687: Fix misparses in eximstats.
+ Patch provided by Heiko Schlittermann.
+
+NM/24 Bugzilla 688: Fix exiwhat to handle log_selector = +pid.
+ Patch provided by Heiko Schlittermann.
+
+NM/25 Bugzilla 727: Use transport mode as default mode for maildirsize file.
+ plus update to original patch.
+
+NM/26 Bugzilla 799: Documentation correction for ratelimit.
+
+NM/27 Bugzilla 802: Improvements to local interface IP addr detection.
+ Patch provided by David Brownlee.
+
+NM/28 Bugzilla 807: Improvements to LMTP delivery logging.
+
+NM/29 Bugzilla 862, 866, 875: Documentation bugfixes.
+
+NM/30 Bugzilla 888: TLS documentation bugfixes.
+
+NM/31 Bugzilla 896: Dovecot buffer overrun fix.
+
+NM/32 Bugzilla 889: Change all instances of "expr" in shell scripts to "expr --"
+ Unlike the original bugzilla I have changed all shell scripts in src tree.
+
+NM/33 Bugzilla 898: Transport filter timeout fix.
+ Patch by Todd Rinaldo.
+
+NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
+ Patch by Serge Demonchaux.
+
+NM/35 Bugzilla 39: Base64 decode bug fixes.
+ Patch by Jakob Hirsch.
+
+NM/36 Bugzilla 909: Correct connect() call in dcc code.
+
+NM/37 Bugzilla 910: Correct issue with relaxed/simple handling.
+
+NM/38 Bugzilla 908: Removed NetBSD3 support as no longer needed.
+
+NM/39 Bugzilla 911: Fixed MakeLinks build script.
+
+
+Exim version 4.69
+-----------------
+
+TK/01 Add preliminary DKIM support. Currently requires a forked version of
+ ALT-N's libdkim that I have put here:
+ http://duncanthrax.net/exim-experimental/
+
+ Note to Michael Haardt: I had to rename some vars in sieve.c. They
+ were called 'true' and it seems that C99 defines that as a reserved
+ keyword to be used with 'bool' variable types. That means you could
+ not include C99-style headers which use bools without triggering
+ build errors in sieve.c.
+
+NM/01 Bugzilla 592: --help option is handled incorrectly if exim is invoked
+ as mailq or other aliases. Changed the --help handling significantly
+ to do whats expected. exim_usage() emits usage/help information.
+
+SC/01 Added the -bylocaldomain option to eximstats.
+
+NM/02 Bugzilla 619: Defended against bad data coming back from gethostbyaddr.
+
+NM/03 Bugzilla 613: Documentation fix for acl_not_smtp.
+
+NM/04 Bugzilla 628: PCRE update to 7.4 (work done by John Hall).
+
+
+Exim version 4.68
+-----------------
+
+PH/01 Another patch from the Sieve maintainer.
+
+PH/02 When an IPv6 address is converted to a string for single-key lookup
+ in an address list (e.g. for an item such as "net24-dbm;/net/works"),
+ dots are used instead of colons so that keys in lsearch files need not
+ contain colons. This was done some time before quoting was made available
+ in lsearch files. However, iplsearch files do require colons in IPv6 keys
+ (notated using the quote facility) so as to distinguish them from IPv4
+ keys. This meant that lookups for IP addresses in host lists did not work
+ for iplsearch lookups.
+
+ This has been fixed by arranging for IPv6 addresses to be expressed with
+ colons if the lookup type is iplsearch. This is not incompatible, because
+ previously such lookups could never work.
+
+ The situation is now rather anomolous, since one *can* have colons in
+ ordinary lsearch keys. However, making the change in all cases is
+ incompatible and would probably break a number of configurations.
+
+TK/01 Change PRVS address formatting scheme to reflect latests BATV draft
+ version.
+
+MH/01 The "spam" ACL condition code contained a sscanf() call with a %s
+ conversion specification without a maximum field width, thereby enabling
+ a rogue spamd server to cause a buffer overflow. While nobody in their
+ right mind would setup Exim to query an untrusted spamd server, an
+ attacker that gains access to a server running spamd could potentially
+ exploit this vulnerability to run arbitrary code as the Exim user.
+
+TK/02 Bugzilla 502: Apply patch to make the SPF-Received: header use
+ $primary_hostname instead of what libspf2 thinks the hosts name is.
+
+MH/02 The dsearch lookup now uses lstat(2) instead of stat(2) to look for
+ a directory entry by the name of the lookup key. Previously, if a
+ symlink pointed to a non-existing file or a file in a directory that
+ Exim lacked permissions to read, a lookup for a key matching that
+ symlink would fail. Now it is enough that a matching directory entry
+ exists, symlink or not. (Bugzilla 503.)
+
+PH/03 The body_linecount and body_zerocount variables are now exported in the
+ local_scan API.
+
+PH/04 Added the $dnslist_matched variable.
+
+PH/05 Unset $tls_cipher and $tls_peerdn before making a connection as a client.
+ This means they are set thereafter only if the connection becomes
+ encrypted.
+
+PH/06 Added the client_condition to authenticators so that some can be skipped
+ by clients under certain conditions.
+
+PH/07 The error message for a badly-placed control=no_multiline_responses left
+ "_responses" off the end of the name.
+
+PH/08 Added -Mvc to output a copy of a message in RFC 2822 format.
+
+PH/09 Tidied the code for creating ratelimiting keys, creating them explicitly
+ (without spaces) instead of just copying the configuration text.
+
+PH/10 Added the /noupdate option to the ratelimit ACL condition.
+
+PH/11 Added $max_received_linelength.
+
+PH/12 Added +ignore_defer and +include_defer to host lists.
+
+PH/13 Installed PCRE version 7.2. This needed some changes because of the new
+ way in which PCRE > 7.0 is built.
+
+PH/14 Implemented queue_only_load_latch.
+
+PH/15 Removed an incorrect (int) cast when reading the value of SIZE in a
+ MAIL command. The effect was to mangle the value on 64-bit systems.
+
+PH/16 Another patch from the Sieve maintainer.
+
+PH/17 Added the NOTQUIT ACL, based on a patch from Ted Cooper.
+
+PH/18 If a system quota error occurred while trying to create the file for
+ a maildir delivery, the message "Mailbox is full" was not appended to the
+ bounce if the delivery eventually timed out. Change 4.67/27 below applied
+ only to a quota excession during the actual writing of the file.
+
+PH/19 It seems that peer DN values may contain newlines (and other non-printing
+ characters?) which causes problems in log lines. The DN values are now
+ passed through string_printing() before being added to log lines.
+
+PH/20 Added the "servers=" facility to MySQL and PostgreSQL lookups. (Oracle
+ and InterBase are left for another time.)
+
+PH/21 Added message_body_newlines option.
+
+PH/22 Guard against possible overflow in moan_check_errorcopy().
+
+PH/23 POSIX allows open() to be a macro; guard against that.
+
+PH/24 If the recipient of an error message contained an @ in the local part
+ (suitably quoted, of course), incorrect values were put in $domain and
+ $local_part during the evaluation of errors_copy.
+
+
+Exim version 4.67
+-----------------
+
+MH/01 Fix for bug #448, segfault in Dovecot authenticator when interface_address
+ is unset (happens when testing with -bh and -oMi isn't used). Thanks to
+ Jan Srzednicki.
+
+PH/01 Added a new log selector smtp_no_mail, to log SMTP sessions that do not
+ issue a MAIL command.
+
+PH/02 In an ACL statement such as
+
+ deny dnslists = X!=127.0.0.2 : X=127.0.0.2
+
+ if a client was not listed at all, or was listed with a value other than
+ 127.0.0.2, in the X list, but was listed with 127.0.0.2 in the Y list,
+ the condition was not true (as it should be), so access was not denied.
+ The bug was that the ! inversion was incorrectly passed on to the second
+ item. This has been fixed.
+
+PH/03 Added additional dnslists conditions == and =& which are different from
+ = and & when the dns lookup returns more than one IP address.
+
+PH/04 Added gnutls_require_{kx,mac,protocols} to give more control over the
+ cipher suites used by GnuTLS. These options are ignored by OpenSSL.
+
+PH/05 After discussion on the list, added a compile time option ENABLE_DISABLE_
+ FSYNC, which compiles an option called disable_fsync that allows for
+ bypassing fsync(). The documentation is heavily laced with warnings.
+
+SC/01 Updated eximstats to collate all SpamAssassin rejects into one bucket.
+
+PH/06 Some tidies to the infrastructure of the Test Suite that is concerned
+ with the auxiliary C programs that it uses: (1) Arrange for BIND_8_COMPAT
+ to be defined when compiling on OSX (Darwin); (2) Tidies to the Makefile,
+ including adding "make clean"; (3) Added -fPIC when compiling the test
+ dynamically loaded module, to get rid of a warning.
+
+MH/02 Fix for bug #451, causing paniclog entries to be written if a bounce
+ message fails, move_frozen_messages = true and ignore_bounce_errors_after
+ = 0s. The bug is otherwise harmless.
+
+PH/07 There was a bug in the dovecot authenticator such that the value of
+ $auth1 could be overwritten, and so not correctly preserved, after a
+ successful authentication. This usually meant that the value preserved by
+ the server_setid option was incorrect.
+
+PH/08 Added $smtp_count_at_connection_start, deliberately with a long name.
+
+PH/09 Installed PCRE release 7.0.
+
+PH/10 The acl_not_smtp_start ACL was, contrary to the documentation, not being
+ run for batched SMTP input. It is now run at the start of every message
+ in the batch. While fixing this I discovered that the process information
+ (output by running exiwhat) was not always getting set for -bs and -bS
+ input. This is fixed, and it now also says "batched" for BSMTP.
+
+PH/11 Added control=no_pipelining.
+
+PH/12 Added $sending_ip_address and $sending_port (mostly Magnus Holmgren's
+ patch, slightly modified), and move the expansion of helo_data till after
+ the connection is made in the smtp transport (so it can use these
+ values).
+
+PH/13 Added ${rfc2047d: to decoded RFC 2047 strings.
+
+PH/14 Added log_selector = +pid.
+
+PH/15 Flush SMTP output before delaying, unless control=no_delay_flush is set.
+
+PH/16 Add ${if forany and ${if forall.
+
+PH/17 Added dsn_from option to vary the From: line in DSNs.
+
+PH/18 Flush SMTP output before performing a callout, unless control =
+ no_callout_flush is set.
+
+PH/19 Change 4.64/PH/36 introduced a bug: when address_retry_include_sender
+ was true (the default) a successful delivery failed to delete the retry
+ item, thus causing premature timeout of the address. The bug is now
+ fixed.
+
+PH/20 Added hosts_avoid_pipelining to the smtp transport.
+
+PH/21 Long custom messages for fakedefer and fakereject are now split up
+ into multiline reponses in the same way that messages for "deny" and
+ other ACL rejections are.
+
+PH/22 Applied Jori Hamalainen's speed-up changes and typo fixes to exigrep,
+ with slight modification.
+
+PH/23 Applied sieve patches from the maintainer "tracking the latest notify
+ draft, changing the syntax and factoring some duplicate code".
+
+PH/24 When the log selector "outgoing_port" was set, the port was shown as -1
+ for deliveries of the second and subsequent messages over the same SMTP
+ connection.
+
+PH/25 Applied Magnus Holmgren's patch for ${addresses, ${map, ${filter, and
+ ${reduce, with only minor "tidies".
+
+SC/02 Applied Daniel Tiefnig's patch to improve the '($parent) =' pattern match.
+
+PH/26 Added a "continue" ACL modifier that does nothing, for the benefit of its
+ expansion side effects.
+
+PH/27 When a message times out after an over-quota error from an Exim-imposed
+ quota, the bounce message says "mailbox is full". This message was not
+ being given when it was a system quota that was exceeded. It now should
+ be the same.
+
+MH/03 Made $recipients available in local_scan(). local_scan() already has
+ better access to the recipient list through recipients_list[], but
+ $recipients can be useful in postmaster-provided expansion strings.
+
+PH/28 The $smtp_command and $smtp_command_argument variables were not correct
+ in the case of a MAIL command with additional options following the
+ address, for example: MAIL FROM:<foo@bar> SIZE=1234. The option settings
+ were accidentally chopped off.
+
+PH/29 SMTP synchronization checks are implemented when a command is read -
+ there is a check that no more input is waiting when there shouldn't be
+ any. However, for some commands, a delay in an ACL can mean that it is
+ some time before the response is written. In this time, more input might
+ arrive, invalidly. So now there are extra checks after an ACL has run for
+ HELO/EHLO and after the predata ACL, and likewise for MAIL and RCPT when
+ pipelining has not been advertised.
+
+PH/30 MH's patch to allow iscntrl() characters to be list separators.
+
+PH/31 Unlike :fail:, a custom message specified with :defer: was not being
+ returned in the SMTP response when smtp_return_error_details was false.
+ This has been fixed.
+
+PH/32 Change the Dovecot authenticator to use read() and write() on the socket
+ instead of the C I/O that was originally supplied, because problems were
+ reported on Solaris.
+
+PH/33 Compile failed with OpenSSL 0.9.8e. This was due to a coding error in
+ Exim which did not show up earlier: it was assuming that a call to
+ SSL_CTX_set_info_callback() might give an error value. In fact, there is
+ no error. In previous releases of OpenSSL, SSL_CTX_set_info_callback()
+ was a macro that became an assignment, so it seemed to work. This has
+ changed to a proper function call with a void return, hence the compile
+ error. Exim's code has been fixed.
+
+PH/34 Change HDA_SIZE in oracle.c from 256 to 512. This is needed for 64-bit
+ cpus.
+
+PH/35 Applied a patch from the Sieve maintainer which fixes a bug in "notify".
+
+PH/36 Applied John Jetmore's patch to add -v functionality to exigrep.
+
+PH/37 If a message is not accepted after it has had an id assigned (e.g.
+ because it turns out to be too big or there is a timeout) there is no
+ "Completed" line in the log. When some messages of this type were
+ selected by exigrep, they were listed as "not completed". Others were
+ picked up by some special patterns. I have improved the selection
+ criteria to be more general.
+
+PH/38 The host_find_failed option in the manualroute router can now be set
+ to "ignore", to completely ignore a host whose IP address cannot be
+ found. If all hosts are ignored, the behaviour is controlled by the new
+ host_all_ignored option.
+
+PH/39 In a list of hosts for manualroute, if one item (either because of multi-
+ homing or because of multiple MX records with /mx) generated more than
+ one IP address, and the following item turned out to be the local host,
+ all the secondary addresses of the first item were incorrectly removed
+ from the list, along with the local host and any following hosts (which
+ is what is supposed to happen).
+
+PH/40 When Exim receives a message, it writes the login name, uid, and gid of
+ whoever called Exim into the -H file. In the case of the daemon it was
+ behaving confusingly. When first started, it used values for whoever
+ started the daemon, but after a SIGHUP it used the Exim user (because it
+ calls itself on a restart). I have changed the code so that it now always
+ uses the Exim user.
+
+PH/41 (Following a suggestion from Tony Finch) If all the RCPT commands in a
+ message are rejected with the same error (e.g. no authentication or bad
+ sender address), and a DATA command is nevertheless sent (as can happen
+ with PIPELINING or a stupid MUA), the error message that was given to the
+ RCPT commands is included in the rejection of the DATA command. This is
+ intended to be helpful for MUAs that show only the final error to their
+ users.
+
+PH/42 Another patch from the Sieve maintainer.
+
+SC/02 Eximstats - Differentiate between permanent and temporary rejects.
+ Eximstats - Fixed some broken HTML links and added missing column headers
+ (Jez Hancock).
+ Eximstats - Fixed Grand Total Summary Domains, Edomains, and Email
+ columns for Rejects, Temp Rejects, Ham, and Spam rows.
+
+SC/03 Eximstats - V1.58 Fix to get <> and blackhole to show in edomain tables.
+
+PH/43 Yet another patch from the Sieve maintainer.
+
+PH/44 I found a way to check for a TCP/IP connection going away before sending
+ the response to the final '.' that terminates a message, but only in the
+ case where the client has not sent further data following the '.'
+ (unfortunately, this is allowed). However, in many cases there won't be
+ any further data because there won't be any more messages to send. A call
+ to select() can be used: if it shows that the input is "ready", there is
+ either input waiting, or the socket has been closed. An attempt to read
+ the next input character can distinguish the two cases. Previously, Exim
+ would have sent an OK response which the client would never have see.
+ This could lead to message repetition. This fix should cure that, at
+ least in a lot of common cases.
+
+PH/45 Do not advertise STARTTLS in response to HELP unless it would be
+ advertised in response to EHLO.
+
+
+Exim version 4.66
+-----------------
+
+PH/01 Two more bugs that were introduced by 4.64/PH/07, in addition to the one
+ fixed by 4.65/MH/01 (is this a record?) are fixed:
+
+ (i) An empty string was always treated as zero by the numeric comparison
+ operators. This behaviour has been restored.
+
+ (ii) It is documented that the numeric comparison operators always treat
+ their arguments as decimal numbers. This was broken in that numbers
+ starting with 0 were being interpreted as octal.
+
+ While fixing these problems I realized that there was another issue that
+ hadn't been noticed. Values of message_size_limit (both the global option
+ and the transport option) were treated as octal if they started with 0.
+ The documentation was vague. These values are now always treated as
+ decimal, and I will make that clear in the documentation.
+
+
+Exim version 4.65
+-----------------
+
+TK/01 Disable default definition of HAVE_LINUX_SENDFILE. Clashes with
+ Linux large file support (_FILE_OFFSET_BITS=64) on older glibc
+ versions. (#438)
+
+MH/01 Don't check that the operands of numeric comparison operators are
+ integers when their expansion is in "skipping" mode (fixes bug
+ introduced by 4.64-PH/07).
+
+PH/01 If a system filter or a router generates more than SHRT_MAX (32767)
+ child addresses, Exim now panics and dies. Previously, because the count
+ is held in a short int, deliveries were likely to be lost. As such a
+ large number of recipients for a single message is ridiculous
+ (performance will be very, very poor), I have chosen to impose a limit
+ rather than extend the field.
-Change log file for Exim from version 4.21
--------------------------------------------
Exim version 4.64
-----------------
+TK/01 Bugzilla #401. Fix DK spooling code so that it can overwrite a
+ leftover -K file (the existence of which was triggered by #402).
+ While we were at it, introduced process PID as part of the -K
+ filename. This should rule out race conditions when creating
+ these files.
+
+TK/02 Bugzilla #402. Apply patch from Simon Arlott, speeding up DK signing
+ processing considerably. Previous code took too long for large mails,
+ triggering a timeout which in turn triggers #401.
+
+TK/03 Introduced HAVE_LINUX_SENDFILE to os.h-Linux. Currently only used
+ in the DK code in transports.c. sendfile() is not really portable,
+ hence the _LINUX specificness.
+
TF/01 In the add_headers option to the mail command in an Exim filter,
there was a bug that Exim would claim a syntax error in any
header after the first one which had an odd number of characters
PH/04 Applied Nico Erfurth's refactoring patch to tidy up mime.c
(quoted-printable decoding).
-PH/05 Applied Nico Efrurth's refactoring patch to tidy up spool_mbox.c, and
+PH/05 Applied Nico Erfurth's refactoring patch to tidy up spool_mbox.c, and
later the small subsequent patch to fix an introduced bug.
PH/06 Installed the latest Cygwin Makefile from the Cygwin maintainer.
JJ/02 exipick 20060919.0, --show-vars args can now be regular expressions,
miscellaneous code fixes
+PH/10 Added the log_reject_target ACL modifier to specify where to log
+ rejections.
+
+PH/11 Callouts were setting the name used for EHLO/HELO from $smtp_active_
+ hostname. This is wrong, because it relates to the incoming message (and
+ probably the interface on which it is arriving) and not to the outgoing
+ callout (which could be using a different interface). This has been
+ changed to use the value of the helo_data option from the smtp transport
+ instead - this is what is used when a message is actually being sent. If
+ there is no remote transport (possible with a router that sets up host
+ addresses), $smtp_active_hostname is used.
+
+PH/12 Installed Andrey Panin's patch to add a dovecot authenticator. Various
+ tweaks were necessary in order to get it to work (see also 21 below):
+ (a) The code assumed that strncpy() returns a negative number on buffer
+ overflow, which isn't the case. Replaced with Exim's string_format()
+ function.
+ (b) There were several signed/unsigned issues. I just did the minimum
+ hacking in of casts. There is scope for a larger refactoring.
+ (c) The code used strcasecmp() which is not a standard C function.
+ Replaced with Exim's strcmpic() function.
+ (d) The code set only $1; it now sets $auth1 as well.
+ (e) A simple test gave the error "authentication client didn't specify
+ service in request". It would seem that Dovecot has changed its
+ interface. Fortunately there's a specification; I followed it and
+ changed what the client sends and it appears to be working now.
+
+PH/13 Added $message_headers_raw to provide the headers without RFC 2047
+ decoding.
+
+PH/14 Corrected misleading output from -bv when -v was also used. Suppose the
+ address A is aliased to B and C, where B exists and C does not. Without
+ -v the output is "A verified" because verification stops after a
+ successful redirection if more than one address is generated. However,
+ with -v the child addresses are also verified. Exim was outputting "A
+ failed to verify" and then showing the successful verification for C,
+ with its parentage. It now outputs "B failed to verify", showing B's
+ parentage before showing the successful verification of C.
+
+PH/15 Applied Michael Deutschmann's patch to allow DNS black list processing to
+ look up a TXT record in a specific list after matching in a combined
+ list.
+
+PH/16 It seems that the options setting for the resolver (RES_DEFNAMES and
+ RES_DNSRCH) can affect the behaviour of gethostbyname() and friends when
+ they consult the DNS. I had assumed they would set it the way they
+ wanted; and indeed my experiments on Linux seem to show that in some
+ cases they do (I could influence IPv6 lookups but not IPv4 lookups).
+ To be on the safe side, however, I have now made the interface to
+ host_find_byname() similar to host_find_bydns(), with an argument
+ containing the DNS resolver options. The host_find_byname() function now
+ sets these options at its start, just as host_find_bydns() does. The smtp
+ transport options dns_qualify_single and dns_search_parents are passed to
+ host_find_byname() when gethostbyname=TRUE in this transport. Other uses
+ of host_find_byname() use the default settings of RES_DEFNAMES
+ (qualify_single) but not RES_DNSRCH (search_parents).
+
+PH/17 Applied (a modified version of) Nico Erfurth's patch to make
+ spool_read_header() do less string testing, by means of a preliminary
+ switch on the second character of optional "-foo" lines. (This is
+ overdue, caused by the large number of possibilities that now exist.
+ Originally there were few.) While I was there, I also converted the
+ str(n)cmp tests so they don't re-test the leading "-" and the first
+ character, in the hope this might squeeze out yet more improvement.
+
+PH/18 Two problems with "group" syntax in header lines when verifying: (1) The
+ flag allowing group syntax was set by the header_syntax check but not
+ turned off, possible causing trouble later; (2) The flag was not being
+ set at all for the header_verify test, causing "group"-style headers to
+ be rejected. I have now set it in this case, and also caused header_
+ verify to ignore an empty address taken from a group. While doing this, I
+ came across some other cases where the code for allowing group syntax
+ while scanning a header line wasn't quite right (mostly, not resetting
+ the flag correctly in the right place). These bugs could have caused
+ trouble for malformed header lines. I hope it is now all correct.
+
+PH/19 The functions {pwcheck,saslauthd}_verify_password() are always called
+ with the "reply" argument non-NULL. The code, however (which originally
+ came from elsewhere) had *some* tests for NULL when it wrote to *reply,
+ but it didn't always do it. This confused somebody who was copying the
+ code for some other use. I have removed all the tests.
+
+PH/20 It was discovered that the GnuTLS code had support for RSA_EXPORT, a
+ feature that was used to support insecure browsers during the U.S. crypto
+ embargo. It requires special client support, and Exim is probably the
+ only MTA that supported it -- and would never use it because real RSA is
+ always available. This code has been removed, because it had the bad
+ effect of slowing Exim down by computing (never used) parameters for the
+ RSA_EXPORT functionality.
+
+PH/21 On the advice of Timo Sirainen, added a check to the dovecot
+ authenticator to fail if there's a tab character in the incoming data
+ (there should never be unless someone is messing about, as it's supposed
+ to be base64-encoded). Also added, on Timo's advice, the "secured" option
+ if the connection is using TLS or if the remote IP is the same as the
+ local IP, and the "valid-client-cert option" if a client certificate has
+ been verified.
+
+PH/22 As suggested by Dennis Davis, added a server_condition option to *all*
+ authenticators. This can be used for authorization after authentication
+ succeeds. (In the case of plaintext, it servers for both authentication
+ and authorization.)
+
+PH/23 Testing for tls_required and lost_connection in a retry rule didn't work
+ if any retry times were supplied.
+
+PH/24 Exim crashed if verify=helo was activated during an incoming -bs
+ connection, where there is no client IP address to check. In this
+ situation, the verify now always succeeds.
+
+PH/25 Applied John Jetmore's -Mset patch.
+
+PH/26 Added -bem to be like -Mset, but loading a message from a file.
+
+PH/27 In a string expansion for a processed (not raw) header when multiple
+ headers of the same name were present, leading whitespace was being
+ removed from all of them, but trailing whitespace was being removed only
+ from the last one. Now trailing whitespace is removed from each header
+ before concatenation. Completely empty headers in a concatenation (as
+ before) are ignored.
+
+PH/28 Fixed bug in backwards-compatibility feature of PH/09 (thanks to John
+ Jetmore). It would have mis-read ACL variables from pre-4.61 spool files.
+
+PH/29 [Removed. This was a change that I later backed out, and forgot to
+ correct the ChangeLog entry (that I had efficiently created) before
+ committing the later change.]
+
+PH/30 Exim was sometimes attempting to deliver messages that had suffered
+ address errors (4xx response to RCPT) over the same connection as other
+ messages routed to the same hosts. Such deliveries are always "forced",
+ so retry times are not inspected. This resulted in far too many retries
+ for the affected addresses. The effect occurred only when there were more
+ hosts than the hosts_max_try setting in the smtp transport when it had
+ the 4xx errors. Those hosts that it had tried were not added to the list
+ of hosts for which the message was waiting, so if all were tried, there
+ was no problem. Two fixes have been applied:
+
+ (i) If there are any address or message errors in an SMTP delivery, none
+ of the hosts (tried or untried) are now added to the list of hosts
+ for which the message is waiting, so the message should not be a
+ candidate for sending over the same connection that was used for a
+ successful delivery of some other message. This seems entirely
+ reasonable: after all the message is NOT "waiting for some host".
+ This is so "obvious" that I'm not sure why it wasn't done
+ previously. Hope I haven't missed anything, but it can't do any
+ harm, as the worst effect is to miss an optimization.
+
+ (ii) If, despite (i), such a delivery is accidentally attempted, the
+ routing retry time is respected, so at least it doesn't keep
+ hammering the server.
+
+PH/31 Installed Andrew Findlay's patch to close the writing end of the socket
+ in ${readsocket because some servers need this prod.
+
+PH/32 Added some extra debug output when updating a wait-xxx database.
+
+PH/33 The hint "could be header name not terminated by colon", which has been
+ given for certain expansion errors for a long time, was not being given
+ for the ${if def:h_colon_omitted{... case.
+
+PH/34 The spec says: "With one important exception, whenever a domain list is
+ being scanned, $domain contains the subject domain." There was at least
+ one case where this was not true.
+
+PH/35 The error "getsockname() failed: connection reset by peer" was being
+ written to the panic log as well as the main log, but it isn't really
+ panic-worthy as it just means the connection died rather early on. I have
+ removed the panic log writing for the ECONNRESET error when getsockname()
+ fails.
+
+PH/36 After a 4xx response to a RCPT error, that address was delayed (in queue
+ runs only) independently of the message's sender address. This meant
+ that, if the 4xx error was in fact related to the sender, a different
+ message to the same recipient with a different sender could confuse
+ things. In particualar, this can happen when sending to a greylisting
+ server, but other circumstances could also provoke similar problems.
+ I have changed the default so that the retry time for these errors is now
+ based a combination of the sender and recipient addresses. This change
+ can be overridden by setting address_retry_include_sender=false in the
+ smtp transport.
+
+PH/37 For LMTP over TCP/IP (the smtp transport), error responses from the
+ remote server are returned as part of bounce messages. This was not
+ happening for LMTP over a pipe (the lmtp transport), but now it is the
+ same for both kinds of LMTP.
+
+PH/38 Despite being documented as not happening, Exim was rewriting addresses
+ in header lines that were in fact CNAMEs. This is no longer the case.
+
+PH/39 If -R or -S was given with -q<time>, the effect of -R or -S was ignored,
+ and queue runs started by the daemon processed all messages. This has
+ been fixed so that -R and -S can now usefully be given with -q<time>.
+
+PH/40 Import PCRE release 6.7 (fixes some bugs).
+
+PH/41 Add bitwise logical operations to eval (courtesy Brad Jorsch).
+
+PH/42 Give an error if -q is specified more than once.
+
+PH/43 Renamed the variables $interface_address and $interface_port as
+ $received_ip_address and $received_port, to make it clear that these
+ values apply to message reception, and not to the outgoing interface when
+ a message is delivered. (The old names remain recognized, of course.)
+
+PH/44 There was no timeout on the connect() call when using a Unix domain
+ socket in the ${readsocket expansion. There now is.
+
+PH/45 Applied a modified version of Brad Jorsch's patch to allow "message" to
+ be meaningful with "accept".
+
+SC/01 Eximstats V1.43
+ Bug fix for V1.42 with -h0 specified. Spotted by Chris Lear.
+
+SC/02 Eximstats V1.44
+ Use a glob alias rather than an array ref in the generated
+ parser. This improves both readability and performance.
+
+SC/03 Eximstats V1.45 (Marco Gaiarin / Steve Campbell)
+ Collect SpamAssassin and rejection statistics.
+ Don't display local sender or destination tables unless
+ there is data to show.
+ Added average volumes into the top table text output.
+
+SC/04 Eximstats V1.46
+ Collect data on the number of addresses (recipients)
+ as well as the number of messages.
+
+SC/05 Eximstats V1.47
+ Added 'Message too big' to the list of mail rejection
+ reasons (thanks to Marco Gaiarin).
+
+SC/06 Eximstats V1.48
+ Mainlog lines which have GMT offsets and are too short to
+ have a flag are now skipped.
+
+SC/07 Eximstats V1.49 (Alain Williams)
+ Added the -emptyok flag.
+
+SC/08 Eximstats V1.50
+ Fixes for obtaining the IP address from reject messages.
+
+JJ/03 exipick.20061117.2, made header handling as similar to exim as possible
+ (added [br]h_ prefixes, implemented RFC2047 decoding. Fixed
+ whitesspace changes from 4.64-PH/27
+
+JJ/04 exipick.20061117.2, fixed format and added $message_headers_raw to
+ match 4.64-PH/13
+
+JJ/05 exipick.20061117.2, bug fixes (error out sooner when invalid criteria
+ are found, allow negative numbers in numeric criteria)
+
+JJ/06 exipick.20061117.2, added new $message_body_missing variable
+
+JJ/07 exipick.20061117.2, added $received_ip_address and $received_port
+ to match changes made in 4.64-PH/43
+
+PH/46 Applied Jori Hamalainen's patch to add features to exiqsumm.
+
+PH/47 Put in an explicit test for a DNS lookup of an address record where the
+ "domain" is actually an IP address, and force a failure. This locks out
+ those revolvers/nameservers that support "A-for-A" lookups, in
+ contravention of the specifications.
+
+PH/48 When a host name was looked up from an IP address, and the subsequent
+ forward lookup of the name timed out, the host name was left in
+ $sender_host_name, contrary to the specification.
+
+PH/49 Although default lookup types such as lsearch* or cdb*@ have always been
+ restricted to single-key lookups, Exim was not diagnosing an error if
+ * or *@ was used with a query-style lookup.
+
+PH/50 Increased the value of DH_BITS in tls-gnu.c from 768 to 1024.
+
+MH/01 local_scan ABI version incremented to 1.1. It should have been updated
+ long ago, but noone interested enough thought of it. Let's just say that
+ the "1.1" means that there are some new functions that weren't there at
+ some point in the past.
+
+PH/51 Error processing for expansion failure of helo_data from an smtp
+ transport during callout processing was broken.
+
+PH/52 Applied John Jetmore's patch to allow tls-on-connect and STARTTLS to be
+ tested/used via the -bh/-bhc/-bs options.
+
+PH/53 Added missing "#include <time.h>" to pcre/pcretest.c (this was a PCRE
+ bug, fixed in subsequent PCRE releases).
+
+PH/54 Applied Robert Bannocks' patch to avoid a problem with references that
+ arises when using the Solaris LDAP libraries (but not with OpenLDAP).
+
+PH/55 Check for a ridiculously long file name in exim_dbmbuild.
+
Exim version 4.63
-----------------
git://git.exim.org / users / heiko / exim.git / blobdiff