X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/c8899c20aa08c9ae6a4c291aad23ba90512bebe4..44bc8f0c2f3576b46bd6df1b818cb29eaf84df5b:/doc/doc-txt/ChangeLog diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog index cb43f0f10..11b25f875 100644 --- a/doc/doc-txt/ChangeLog +++ b/doc/doc-txt/ChangeLog @@ -1,6 +1,73 @@ Change log file for Exim from version 4.21 ------------------------------------------- +Exim version 4.88 +----------------- +JH/01 Use SIZE on MAIL FROM in a cutthrough connection, if the destination + supports it and a size is available (ie. the sending peer gave us one). + +JH/02 The obsolete acl condition "demime" is removed (finally, after ten + years of being deprecated). The replacements are the ACLs + acl_smtp_mime and acl_not_smtp_mime. + +JH/03 Upgrade security requirements imposed for hosts_try_dane: previously + a downgraded non-dane trust-anchor for the TLS connection (CA-style) + or even an in-clear connection were permitted. Now, if the host lookup + was dnssec and dane was requested then the host is only used if the + TLSA lookup succeeds and is dnssec. Further hosts (eg. lower priority + MXs) will be tried (for hosts_try_dane though not for hosts_require_dane) + if one fails this test. + This means that a poorly-configured remote DNS will make it incommunicado; + but it protects against a DNS-interception attack on it. + +JH/04 Bug 1810: make continued-use of an open smtp transport connection + non-noisy when a race steals the message being considered. + +JH/05 If main configuration option tls_certificate is unset, generate a + selfsigned certificate for inbound TLS connections. + +JH/06 Bug 165: hide more cases of password exposure - this time in expansions + in rewrites and routers. + +JH/07 Retire gnutls_require_mac et.al. These were nonfunctional since 4.80 + and logged a warning sing 4.83; now they are a configuration file error. + +JH/08 Bug 1836: Fix crash in VRFY handling when handed an unqualified name + (lacking @domain). Apply the same qualification processing as RCPT. + +JH/09 Bug 1804: Avoid writing msglog files when in -bh or -bhc mode. + +JH/10 Support ${sha256:} applied to a string (as well as the previous + certificate). + +JH/11 Cutthrough: avoid using the callout hints db on a verify callout when + a cutthrough deliver is pending, as we always want to make a connection. + This also avoids re-routing the message when later placing the cutthrough + connection after a verify cache hit. + Do not update it with the verify result either. + +JH/12 Cutthrough: disable when verify option success_on_redirect is used, and + when routing results in more than one destination address. + +JH/13 Cutthrough: expand transport dkim_domain option when testing for dkim + signing (which inhibits the cutthrough capability). Previously only + the presence of an option was tested; now an expansion evaluating as + empty is permissible (obviously it should depend only on data available + when the cutthrough connection is made). + +JH/14 Fix logging of errors under PIPELINING. Previously the log line giving + the relevant preceding SMTP command did not note the pipelining mode. + +JH/15 Fix counting of empty lines in $body_linecount and $message_linecount. + Previously they were not counted. + +JH/16 DANE: treat a TLSA lookup response having all non-TLSA RRs, the same + as one having no matching records. Previously we deferred the message + that needed the lookup. + +JH/17 Fakereject: previously logged as a norml message arrival "<="; now + distinguished as "(=". + Exim version 4.87 ----------------- @@ -25,6 +92,181 @@ JH/02 Bug 728: Close logfiles after a daemon-process "exceptional" log write. leaving it open for efficiency as that will be quickly detected by the check on the next write. +HS/01 Bug 1671: Fix post transport crash. + Processing the wait- messages could crash the delivery + process if the message IDs didn't exist for some reason. When + using 'split_spool_directory=yes' the construction of the spool + file name failed already, exposing the same netto behaviour. + +JH/03 Bug 425: Capture substrings in $regex1, $regex2 etc from regex & + mime_regex ACL conditions. + +JH/04 Bug 1686: When compiled with EXPERIMENTAL_DSN_INFO: Add extra information + to DSN fail messages (bounces): remote IP, remote greeting, remote response + to HELO, local diagnostic string. + +JH/05 Downgrade message for a TLS-certificate-based authentication fail from + log line to debug. Even when configured with a tls authenticator many + client connections are expected to not authenticate in this way, so + an authenticate fail is not an error. + +HS/02 Add the Exim version string to the process info. This way exiwhat + gives some more detail about the running daemon. + +JH/06 Bug 1395: time-limit cacheing of DNS lookups, to the TTL value. This may + matter for fast-change records such as DNSBLs. + +JH/07 Bug 1678: Always record an interface option value, if set, as part of a + retry record, even if constant. There may be multiple transports with + different interface settings and the retry behaviour needs to be kept + distinct. + +JH/08 Bug 1586: exiqgrep now refuses to run if there are unexpected arguments. + +JH/09 Bug 1700: ignore space & tab embedded in base64 during decode. + +JH/10 Bug 840: fix log_defer_output option of pipe transport + +JH/11 Bug 830: use same host for all RCPTS of a message, even under + hosts_randomize. This matters a lot when combined with mua_wrapper. + +JH/12 Bug 1706: percent and underbar characters are no longer escaped by the + ${quote_pgsql:} operator. + +JH/13 Bug 1708: avoid misaligned access in cached lookup. + +JH/14 Change header file name for freeradius-client. Relevant if compiling + with Radius support; from the Gentoo tree and checked under Fedora. + +JH/15 Bug 1712: Introduce $prdr_requested flag variable + +JH/16 Bug 1714: Permit an empty string as expansion result for transport + option transport_filter, meaning no filtering. + +JH/17 Bug 1713: Fix non-PDKIM_DEBUG build. Patch from Jasen Betts. + +JH/18 Bug 1709: When built with TLS support, the tls_advertise_hosts option now + defaults to "*" (all hosts). The variable is now available when not built + with TLS, default unset, mainly to enable keeping the testuite sane. + If a server certificate is not supplied (via tls_certificate) an error is + logged, and clients will find TLS connections fail on startup. Presumably + they will retry in-clear. + Packagers of Exim are strongly encouraged to create a server certificate + at installation time. + +HS/03 Add -bP config_file as a synonym for -bP configure_file, for consistency + with the $config_file variable. + +JH/19 Two additional event types: msg:rcpt:defer and msg:rcpt:host:defer. Both + in transport context, after the attempt, and per-recipient. The latter type + is per host attempted. The event data is the error message, and the errno + information encodes the lookup type (A vs. MX) used for the (first) host, + and the trailing two digits of the smtp 4xx reponse. + +GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt + to write to mainlog (or rejectlog, paniclog) in the window between file + creation and permissions/ownership being changed. Particularly affects + installations where exicyclog is run as root, rather than exim user; + result is that the running daemon panics and dies. + +JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names. + +JH/21 Bug 1720: Add support for priority groups and weighted-random proxy + selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options + "pri" and "weight". Note that the previous implicit priority given by the + list order is no longer honoured. + +JH/22 Bugs 963, 1721: Fix some corner cases in message body canonicalisation + for DKIM processing. + +JH/23 Move SOCKS5 support from Experimental to mainline, enabled for a build + by defining SUPPORT_SOCKS. + +JH/26 Move PROXY support from Experimental to mainline, enabled for a build + by defining SUPPORT_PROXY. Note that the proxy_required_hosts option + is renamed to hosts_proxy, and the proxy_{host,target}_{address,port}. + variables are renamed to proxy_{local,external}_{address,port}. + +JH/27 Move Internationalisation support from Experimental to mainline, enabled + for a build by defining SUPPORT_I18N + +JH/28 Bug 1745: Fix redis lookups to handle (quoted) spaces embedded in parts + of the query string, and make ${quote_redis:} do that quoting. + +JH/29 Move Events support from Experimental to mainline, enabled by default + and removable for a build by defining DISABLE_EVENT. + +JH/30 Updated DANE implementation code to current from Viktor Dukhovni. + +JH/31 Fix bug with hosts_connection_nolog and named-lists which were wrongly + cached by the daemon. + +JH/32 Move Redis support from Experimental to mainline, enabled for a build + by defining LOOKUP_REDIS. The libhiredis library is required. + +JH/33 Bug 1748: Permit ACL dnslists= condition in non-smtp ACLs if explicit + keys are given for lookup. + +JH/34 Bug 1192: replace the embedded copy of PolarSSL RSA routines in the DKIM + support, by using OpenSSL or GnuTLS library ones. This means DKIM is + only supported when built with TLS support. The PolarSSL SHA routines + are still used when the TLS library is too old for convenient support. + +JH/35 Require SINGLE_DH_USE by default in OpenSSL (main config option + openssl_options), for security. OpenSSL forces this from version 1.1.0 + server-side so match that on older versions. + +JH/36 Bug 1778: longstanding bug in memory use by the ${run } expansion: A fresh + allocation for $value could be released as the expansion processing + concluded, but leaving the global pointer active for it. + +JH/37 Bug 1769: Permit a VRFY ACL to override the default 252 response, + and to use the domains and local_parts ACL conditions. + +JH/38 Fix cutthrough bug with body lines having a single dot. The dot was + incorrectly not doubled on cutthrough transmission, hence seen as a + body-termination at the receiving system - resulting in truncated mails. + Commonly the sender saw a TCP-level error, and retransmitted the message + via the normal store-and-forward channel. This could result in duplicates + received - but deduplicating mailstores were liable to retain only the + initial truncated version. + +JH/39 Bug 1781: Fix use of DKIM private-keys having trailing '=' in the base-64. + +JH/40 Fix crash in queryprogram router when compiled with EXPERIMENTAL_SRS. + +JH/41 Bug 1792: Fix selection of headers to sign for DKIM: bottom-up. While + we're in there, support oversigning also; bug 1309. + +JH/42 Bug 1796: Fix error logged on a malware scanner connection failure. + +HS/04 Add support for keep_environment and add_environment options. + +JH/43 Tidy coding issues detected by gcc --fsanitize=undefined. Some remain; + either intentional arithmetic overflow during PRNG, or testing config- + induced overflows. + +JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough + delivery resulted in actual delivery. Cancel cutthrough before DATA + stage. + +JH/45 Fix cutthrough, when connection not opened by verify and target hard- + rejects a recipient: pass the reject to the originator. + +JH/46 Multiple issues raised by Coverity. Some were obvious or plausible bugs. + Many were false-positives and ignorable, but it's worth fixing the + former class. + +JH/47 Fix build on HP-UX and older Solaris, which need (un)setenv now also + for the new environment-manipulation done at startup. Move the routines + from being local to tls.c to being global via the os.c file. + +JH/48 Bug 1807: Fix ${extract } for the numeric/3-string case. While preparsing + an extract embedded as result-arg for a map, the first arg for extract + is unavailable so we cannot tell if this is a numbered or keyed + extraction. Accept either. + + Exim version 4.86 ----------------- @@ -92,7 +334,7 @@ JH/18 Bug 1581: Router and transport options headers_add/remove can now have the list separator specified. JH/19 Bug 392: spamd_address, and clamd av_scanner, now support retry - option values. + option values. JH/20 Bug 1571: Ensure that $tls_in_peerdn is set, when verification fails under OpenSSL. @@ -107,7 +349,7 @@ JH/23 Bug 1572: Increase limit on SMTP confirmation message copy size JH/24 Verification callouts now attempt to use TLS by default. -HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains) +HS/01 DNSSEC options (dnssec_require_domains, dnssec_request_domains) are generic router options now. The defaults didn't change. JH/25 Bug 466: Add RFC2322 support for MIME attachment filenames. @@ -145,6 +387,8 @@ JH/35 Bug 1642: Fix support of $spam_ variables at delivery time. Was JH/36 Bug 1659: Guard checking of input smtp commands again pseudo-command added for tls authenticator. +HS/03 Add perl_taintmode main config option + Exim version 4.85 ----------------- @@ -725,7 +969,7 @@ PP/12 MAIL args handles TAB as well as SP, for better interop with Analysis and variant patch by Todd Lyons. NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated - Bug report from Lars Müller (via SUSE), + Bug report from Lars Müller (via SUSE), Patch from Dirk Mueller PP/13 tls_peerdn now print-escaped for spool files.