X-Git-Url: https://git.exim.org/users/jgh/exim.git/blobdiff_plain/4c04137d73637107669e02b21f890387aaa2ef34..00ac951dc593268b8f27a9c24c31e737644edd5a:/doc/doc-txt/NewStuff diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff index dd70201e5..731769629 100644 --- a/doc/doc-txt/NewStuff +++ b/doc/doc-txt/NewStuff @@ -6,11 +6,202 @@ Before a formal release, there may be quite a lot of detail so that people can test from the snapshots or the Git before the documentation is updated. Once the documentation is updated, this file is reduced to a short list. +Version 4.93 +------------ + + 1. An "external" authenticator, per RFC 4422 Appendix A. + + 2. A JSON lookup type, and JSON variants of the forall/any expansion conditions. + + 3. Variables $tls_in_cipher_std, $tls_out_cipher_std giving the RFC names + for ciphersuites. + + 4. Log_selectors "msg_id" (on by default) and "msg_id_created". + + 5. A case_insensitive option for verify=not_blind. + + 6. EXPERIMENTAL_TLS_RESUME optional build feature. See the experimental.spec + file. + + 7. A main option exim_version to override the version Exim + reports in verious places ($exim_version, $version_number). + + 8. Expansion operator ${sha2_N:} for N=256, 384, 512. + + 9. Router variables, $r_... settable from router options and usable in routers + and transports. + +10. The spf lookup now supports IPv6. + +11. Main options for DKIM verify to filter hash and key types. + +12. With TLS1.3, support for full-chain OCSP stapling. + +13. Dual-certificate stacks on servers now support OCSP stapling, under OpenSSL. + +14: An smtp:ehlo transport event, for observability of the remote offered features. + +15: Support under OpenSSL for writing NSS-style key files for packet-capture + decode. The environment variable SSLKEYLOGFILE is used; if an absolute path + it must indicate a file under the spool directory; if relative the the spool + directory is prepended. Works on the server side only. Support under + GnuTLS was already there, being done purely by the library (server side + only, and exim must be run as root). + + +Version 4.92 +-------------- + + 1. ${l_header:} and ${l_h:} expansion items, giving a colon-sep + list when there are multiple headers having a given name. This matters + when individual headers are wrapped onto multiple lines; with previous + facilities hard to parse. + + 2. The ${readsocket } expansion item now takes a "tls" option, doing the + obvious thing. + + 3. EXPERIMENTAL_REQUIRETLS and EXPERIMENTAL_PIPE_CONNECT optional build + features. See the experimental.spec file. + + 4. If built with SUPPORT_I18N a "utf8_downconvert" option on the smtp transport. + + 5. A "pipelining" log_selector. + + 6. Builtin macros for supported log_selector and openssl_options values. + + 7. JSON variants of the ${extract } expansion item. + + 8. A "noutf8" debug option, for disabling the UTF-8 characters in debug output. + + 9. TCP Fast Open support on MacOS. + +Version 4.91 +-------------- + + 1. Dual-certificate stacks on servers now support OCSP stapling, under GnuTLS + version 3.5.6 or later. + + 2. DANE is now supported under GnuTLS version 3.0.0 or later. Both GnuTLS and + OpenSSL versions are moved to mainline support from Experimental. + New SMTP transport option "dane_require_tls_ciphers". + + 3. Feature macros for the compiled-in set of malware scanner interfaces. + + 4. SPF support is promoted from Experimental to mainline status. The template + src/EDITME makefile does not enable its inclusion. + + 5. Logging control for DKIM verification. The existing DKIM log line is + controlled by a "dkim_verbose" selector which is _not_ enabled by default. + A new tag "DKIM=" is added to <= lines by default, controlled by + a "dkim" log_selector. + + 6. Receive duration on <= lines, under a new log_selector "receive_time". + + 7. Options "ipv4_only" and "ipv4_prefer" on the dnslookup router and on + routing rules in the manualroute router. + + 8. Expansion item ${sha3:} / ${sha3_:} now also supported + under OpenSSL version 1.1.1 or later. + + 9. DKIM operations can now use the Ed25519 algorithm in addition to RSA, under + GnuTLS 3.6.0 or OpenSSL 1.1.1 or later. + +10. Builtin feature-macros _CRYPTO_HASH_SHA3 and _CRYPTO_SIGN_ED25519, library + version dependent. + +11. "exim -bP macro " returns caller-usable status. + +12. Expansion item ${authresults {}} for creating an + Authentication-Results: header. + +13. EXPERIMENTAL_ARC. See the experimental.spec file. + See also new util/renew-opendmarc-tlds.sh script for use with DMARC/ARC. + +14: A dane:fail event, intended to facilitate reporting. + +15. "Lightweight" support for Redis Cluster. Requires redis_servers list to + contain all the servers in the cluster, all of which must be reachable from + the running exim instance. If the cluster has master/slave replication, the + list must contain all the master and slave servers. + +16. Add an option to the Avast scanner interface: "pass_unscanned". This + allows to treat unscanned files as clean. Files may be unscanned for + several reasons: decompression bombs, broken archives. + + +Version 4.90 +------------ + + 1. PKG_CONFIG_PATH can now be set in Local/Makefile; + wildcards will be expanded, values are collapsed. + + 2. The ${readsocket } expansion now takes an option to not shutdown the + connection after sending the query string. The default remains to do so. + + 3. An smtp transport option "hosts_noproxy_tls" to control whether multiple + deliveries on a single TCP connection can maintain a TLS connection + open. By default disabled for all hosts, doing so saves the cost of + making new TLS sessions, at the cost of having to proxy the data via + another process. Logging is also affected. + + 4. A malware connection type for the FPSCAND protocol. + + 5. An option for recipient verify callouts to hold the connection open for + further recipients and for delivery. + + 6. The reproducible build $SOURCE_DATE_EPOCH environment variable is now + supported. + + 7. Optionally, an alternate format for spool data-files which matches the + wire format - meaning more efficient reception and transmission (at the + cost of difficulty with standard Unix tools). Only used for messages + received using the ESMTP CHUNKING option, and when a new main-section + option "spool_wireformat" (false by default) is set. + + 8. New main configuration option "commandline_checks_require_admin" to + restrict who can use various introspection options. + + 9. New option modifier "no_check" for quota and quota_filecount + appendfile transport. + +10. Variable $smtp_command_history returning a comma-sep list of recent + SMTP commands. + +11. Millisecond timetamps in logs, on log_selector "millisec". Also affects + log elements QT, DT and D, and timstamps in debug output. + +12. TCP Fast Open logging. As a server, logs when the SMTP banner was sent + while still in SYN_RECV state; as a client logs when the connection + is opened with a TFO cookie. + +13. DKIM support for multiple signing, by domain and/or key-selector. + DKIM support for multiple hashes, and for alternate-identity tags. + Builtin macro with default list of signed headers. + Better syntax for specifying oversigning. + The DKIM ACL can override verification status, and status is visible in + the data ACL. + +14. Exipick understands -C|--config for an alternative Exim + configuration file. + +15. TCP Fast Open used, with data-on-SYN, for client SMTP via SOCKS5 proxy, + for ${readsocket } expansions, and for ClamAV. + +16. The "-be" expansion test mode now supports macros. Macros are expanded + in test lines, and new macros can be defined. + +17. Support for server-side dual-certificate-stacks (eg. RSA + ECDSA). + + Version 4.89 ------------ 1. Allow relative config file names for ".include" + 2. A main-section config option "debug_store" to control the checks on + variable locations during store-reset. Normally false but can be enabled + when a memory corruption issue is suspected on a production system. + Version 4.88 ------------ @@ -360,7 +551,8 @@ Version 4.82 It adds new expansion variables $dmarc_ar_header, $dmarc_status, $dmarc_status_text, and $dmarc_used_domain. It adds a new acl modifier dmarc_status. It adds new control flags dmarc_disable_verify and - dmarc_enable_forensic. + dmarc_enable_forensic. The default for the dmarc_tld_file option is + "/etc/exim/opendmarc.tlds" and can be changed via EDITME. 22. Add expansion variable $authenticated_fail_id, which is the username provided to the authentication method which failed. It is available @@ -801,7 +993,7 @@ Version 4.68 longest line that was received as part of the message, not counting the line termination character(s). - 7. Host lists can now include +ignore_defer and +include_defer, analagous to + 7. Host lists can now include +ignore_defer and +include_defer, analogous to +ignore_unknown and +include_unknown. These options should be used with care, probably only in non-critical host lists such as whitelists.