X-Git-Url: https://git.exim.org/users/heiko/exim.git/blobdiff_plain/8de9db65575ccd8013753bb3d23426f0da2a669a..3bb1e9f161fd22707bc7cfcd77772422ac0fdd8e:/doc/doc-txt/NewStuff?ds=sidebyside diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff index efb8592cf..cd1699dc6 100644 --- a/doc/doc-txt/NewStuff +++ b/doc/doc-txt/NewStuff @@ -6,6 +6,243 @@ 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 4.95 +------------ + + 1. The fast-ramp two phase queue run support, previously experimental, is + now supported by default. + + 2. The native SRS support, previously experimental, is now supported. It is + not built unless specified in the Local/Makefile. + + 3. TLS resumption support, previously experimental, is now supported and + included in default builds. + + 4. Single-key LMDB lookups, previously experimental, are now supported. + The support is not built unless specified in the Local/Makefile. + + 5. Option "message_linelength_limit" on the smtp transport to enforce (by + default) the RFC 998 character limit. + + 6. An option to ignore the cache on a lookup. + + 7. Quota checking during reception (i.e. at SMTP time) for appendfile- + transport-managed quotas. + + 8. Sqlite lookups accept a "file=" option to specify a per-operation + db file, replacing the previous prefix to the SQL string (which had + issues when the SQL used tainted values). + + 9. Lsearch lookups accept a "ret=full" option, to return both the portion + of the line matching the key, and the remainder. + +10. A command-line option to have a daemon not create a notifier socket. + +11. Faster TLS startup. When various configuration options contain no + expandable elements, the information can be preloaded and cached rather + than the provious behaviour of always loading at startup time for every + connection. This helps particularly for the CA bundle. + +12. Proxy Protocol Timeout is configurable via "proxy_protocol_timeout" + main config option. + +Version 4.94 +------------ + + 1. EXPERIMENTAL_SRS_NATIVE optional build feature. See the experimental.spec + file. + + 2. Channel-binding for authenticators is now supported under OpenSSL. + Previously it was GnuTLS-only. + + 3. A msg:defer event. + + 4. Client-side support in the gsasl authenticator. Tested against the + plaintext driver for PLAIN; only against itself for SCRAM-SHA-1 and + SCRAM-SHA-1-PLUS methods. + + 5. Server-side support in the gsasl authenticator for encrypted passwords, as + an alternate for the existing plaintext. + + 6. Variable $local_part_data now also set by router check_local_user option, + with an de-tainted version of $local_part. + + 7. Named-list definitions can now be prefixed "hide" so that "-bP" commands do + not output the content. Previously this could only be done on options. + + 8. As an experimental feature, the dovecot authentication driver supports inet + sockets. Previously it was unix-domain sockets only. + + 9. The ACL control "queue_only" can also be spelled "queue", and now takes an + option "first_pass_route" to do the same as a "-odqs" on the command line. + +10. Items specified for the router and transport headers_remove option can use + a trailing asterisk to specify globbing. + +11. New $queue_size variable. + +12. New variables $local_part_{pre,suf}fix_v. + +13. New main option "sqlite_dbfile", for use in preference to prefixing the + lookup string. The older method fails when tainted variables are used + in the lookup, as the filename becomes tainted. The new method keeps the + filename separate. + +14. Options on the dsearch lookup, to return the full path and to filter + filetypes for matching. + +15. Options on pgsql and mysql lookups, to specify server separate from the + lookup string. + +16. An option on all single-key lookups, to return (on a hit) a de-tainted + version of the lookup key rather than the looked-up data. + +17. $domain_data and $local_part_data are now set by all list-match successes. + Previously only list items that performed lookups did so. + Also, matching list items that are tail-match or RE-match now set the + numeric variables $0 (etc) in the same way os other RE matches. + +18. Expansion item ${listquote {}}. + +19. An option for the ${readsocket {}{}{}} expansion to make the result data + cacheable. + +20. dkim_verify_min_keysizes, a list of minimum acceptable public-key sizes. + +21. bounce_message_file and warn_message_file are now expanded before use. + +22. New main config option spf_smtp_comment_template to customise the + $spf_smtp_comment variable + + + +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). + +16: Command-line option to move messages from one named queue to another. + +17. Variables $tls_in_ver, $tls_out_ver. + + +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 ------------ @@ -15,6 +252,60 @@ Version 4.90 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 ------------ @@ -23,7 +314,7 @@ Version 4.89 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 corrution issue is suspected on a production system. + when a memory corruption issue is suspected on a production system. Version 4.88 @@ -155,7 +446,6 @@ Version 4.86 14. Main option "dns_trust_aa" for trusting your local nameserver at the same level as DNSSEC. - Version 4.85 ------------ @@ -374,7 +664,8 @@ 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 @@ -815,7 +1106,7 @@ 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.