X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/deae092e544ecfb3d8a362a260fc00ec01f0883f..dd7b74e90a96eaf109796d8f9499578571a1572c:/doc/doc-txt/NewStuff diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff index bfbfc7150..ac1968627 100644 --- a/doc/doc-txt/NewStuff +++ b/doc/doc-txt/NewStuff @@ -6,6 +6,158 @@ Before a formal release, there may be quite a lot of detail so that people can test from the snapshots or the CVS before the documentation is updated. Once the documentation is updated, this file is reduced to a short list. +Version 4.88 +------------ + + 1. The new perl_taintmode option allows to run the embedded perl + interpreter in taint mode. + + 2. New log_selector: dnssec, adds a "DS" tag to acceptance and delivery lines. + + 3. Speculative debugging, via a "kill" option to the "control=debug" ACL + modifier. + + 4. New expansion item ${sha3:} / ${sha3_:}. + N can be 224, 256 (default), 384, 512. + With GnuTLS 3.5.0 or later, only. + + 5. Facility for named queues: A command-line argument can specify + the queue name for a queue operation, and an ACL modifier can set + the queue to be used for a message. A $queue_name variable gives + visibility. + + 6. New expansion operators base32/base32d. + + 7. The CHUNKING ESMTP extension from RFC 3030. May give some slight + performance increase and network load decrease. Main config option + chunking_advertise_hosts, and smtp transport option hosts_try_chunking + for control. + + 8. LMDB lookup support, as Experimental. Patch supplied by Andrew Colin Kissa. + + 9. Expansion operator escape8bit, like escape but not touching newline etc.. + +10. Feature macros, generated from compile options. All start with "_HAVE_" + and go on with some roughly recognisable name. Driver macros, for + router, transport and authentication drivers; names starting with "_DRVR_". + Option macros, for each configuration-file option; all start with "_OPT_". + Use the "-bP macros" command-line option to see what is present. + +11. Integer values for options can take a "G" multiplier. + +12. defer=pass option for the ACL control cutthrough_delivery, to reflect 4xx + returns from the target back to the initiator, rather than spooling the + message. + +13. New built-in constants available for tls_dhparam and default changed. + +14. If built with EXPERIMENTAL_QUEUEFILE, a queuefile transport, for writing + out copies of the message spool files for use by 3rd-party scanners. + +15. A new option on the smtp transport, hosts_try_fastopen. If the system + supports it (on Linux it must be enabled in the kernel by the sysadmin) + try to use RFC 7413 "TCP Fast Open". No data is sent on the SYN segment + but it permits a peer that also supports the facility to send its SMTP + banner immediately after the SYN,ACK segment rather then waiting for + another ACK - so saving up to one roundtrip time. Because it requires + previous communication with the peer (we save a cookie from it) this + will only become active on frequently-contacted destinations. + + +Version 4.87 +------------ + + 1. The ACL conditions regex and mime_regex now capture substrings + into numeric variables $regex1 to 9, like the "match" expansion condition. + + 2. New $callout_address variable records the address used for a spam=, + malware= or verify= callout. + + 3. Transports now take a "max_parallel" option, to limit concurrency. + + 4. Expansion operators ${ipv6norm:} and ${ipv6denorm:}. + The latter expands to a 8-element colon-sep set of hex digits including + leading zeroes. A trailing ipv4-style dotted-decimal set is converted + to hex. Pure ipv4 addresses are converted to IPv4-mapped IPv6. + The former operator strips leading zeroes and collapses the longest + set of 0-groups to a double-colon. + + 5. New "-bP config" support, to dump the effective configuration. + + 6. New $dkim_key_length variable. + + 7. New base64d and base64 expansion items (the existing str2b64 being a + synonym of the latter). Add support in base64 for certificates. + + 8. New main configuration option "bounce_return_linesize_limit" to + avoid oversize bodies in bounces. The default value matches RFC + limits. + + 9. New $initial_cwd expansion variable. + + +Version 4.86 +------------ + + 1. Support for using the system standard CA bundle. + + 2. New expansion items $config_file, $config_dir, containing the file + and directory name of the main configuration file. Also $exim_version. + + 3. New "malware=" support for Avast. + + 4. New "spam=" variant option for Rspamd. + + 5. Assorted options on malware= and spam= scanners. + + 6. A command-line option to write a comment into the logfile. + + 7. If built with EXPERIMENTAL_SOCKS feature enabled, the smtp transport can + be configured to make connections via socks5 proxies. + + 8. If built with EXPERIMENTAL_INTERNATIONAL, support is included for + the transmission of UTF-8 envelope addresses. + + 9. If built with EXPERIMENTAL_INTERNATIONAL, an expansion item for a commonly + used encoding of Maildir folder names. + +10. A logging option for slow DNS lookups. + +11. New ${env {}} expansion. + +12. A non-SMTP authenticator using information from TLS client certificates. + +13. Main option "tls_eccurve" for selecting an Elliptic Curve for TLS. + Patch originally by Wolfgang Breyha. + +14. Main option "dns_trust_aa" for trusting your local nameserver at the + same level as DNSSEC. + + +Version 4.85 +------------ + + 1. If built with EXPERIMENTAL_DANE feature enabled, Exim will follow the + DANE SMTP draft to assess a secure chain of trust of the certificate + used to establish the TLS connection based on a TLSA record in the + domain of the sender. + + 2. The EXPERIMENTAL_TPDA feature has been renamed to EXPERIMENTAL_EVENT + and several new events have been created. The reason is because it has + been expanded beyond just firing events during the transport phase. Any + existing TPDA transport options will have to be rewritten to use a new + $event_name expansion variable in a condition. Refer to the + experimental-spec.txt for details and examples. + + 3. The EXPERIMENTAL_CERTNAMES features is an enhancement to verify that + server certs used for TLS match the result of the MX lookup. It does + not use the same mechanism as DANE. + + +Version 4.84 +------------ + + Version 4.83 ------------ @@ -24,7 +176,7 @@ Version 4.83 4. New malware type "sock". Talks over a Unix or TCP socket, sending one command line and matching a regex against the return data for trigger - and a second regex to extract malware_name. The mail spoofile name can + and a second regex to extract malware_name. The mail spoolfile name can be included in the command line. 5. The smtp transport now supports options "tls_verify_hosts" and @@ -36,6 +188,26 @@ Version 4.83 lookup can now set a list of servers to use that is different from the default list. + 7. New command-line option -C for exiqgrep to specify alternate exim.conf + file when searching the queue. + + 8. OCSP now supports GnuTLS also, if you have version 3.1.3 or later of that. + + 9. Support for DNSSEC on outbound connections. + +10. New variables "tls_(in,out)_(our,peer)cert" and expansion item + "certextract" to extract fields from them. Hash operators md5 and sha1 + work over them for generating fingerprints, and a new sha256 operator + for them added. + +11. PRDR is now supported dy default. + +12. OCSP stapling is now supported by default. + +13. If built with the EXPERIMENTAL_DSN feature enabled, Exim will output + Delivery Status Notification messages in MIME format, and negociate + DSN features per RFC 3461. + Version 4.82 ------------ @@ -155,14 +327,14 @@ Version 4.82 "aaaa" and "a" lookups is done and the full set of results returned. 14. New expansion variable $headers_added with content from ACL add_header - modifier (but not yet added to messsage). + modifier (but not yet added to message). 15. New 8bitmime status logging option for received messages. Log field "M8S". 16. New authenticated_sender logging option, adding to log field "A". 17. New expansion variables $router_name and $transport_name. Useful - particularly for debug_print as -bt commandline option does not + particularly for debug_print as -bt command-line option does not require privilege whereas -d does. 18. If built with EXPERIMENTAL_PRDR, per-recipient data responses per a