X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/3ecab1575ef1f45a5e7cd3c48cd937ffa8eb0ad9..7a5018557fc37383a98078d7b826c513c2126c2e:/doc/doc-txt/NewStuff diff --git a/doc/doc-txt/NewStuff b/doc/doc-txt/NewStuff index 4b9142238..abbcf4c6c 100644 --- a/doc/doc-txt/NewStuff +++ b/doc/doc-txt/NewStuff @@ -3,9 +3,679 @@ New Features in Exim This file contains descriptions of new features that have been added to Exim. 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 +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. + + +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 +------------ + + 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 +------------ + + 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 "_DRIVER_". + 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. + +16. A new syslog_pid option to suppress PID duplication in syslog lines. + + +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 +------------ + + 1. If built with the EXPERIMENTAL_PROXY feature enabled, Exim can be + configured to expect an initial header from a proxy that will make the + actual external source IP:host be used in exim instead of the IP of the + proxy that is connecting to it. + + 2. New verify option header_names_ascii, which will check to make sure + there are no non-ASCII characters in header names. Exim itself handles + those non-ASCII characters, but downstream apps may not, so Exim can + detect and reject if those characters are present. + + 3. New expansion operator ${utf8clean:string} to replace malformed UTF8 + codepoints with valid ones. + + 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 spoolfile name can + be included in the command line. + + 5. The smtp transport now supports options "tls_verify_hosts" and + "tls_try_verify_hosts". If either is set the certificate verification + is split from the encryption operation. The default remains that a failed + verification cancels the encryption. + + 6. New SERVERS override of default ldap server list. In the ACLs, an ldap + 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 negotiate + DSN features per RFC 3461. + + +Version 4.82 +------------ + + 1. New command-line option -bI:sieve will list all supported sieve extensions + of this Exim build on standard output, one per line. + ManageSieve (RFC 5804) providers managing scripts for use by Exim should + query this to establish the correct list to include in the protocol's + SIEVE capability line. + + 2. If the -n option is combined with the -bP option, then the name of an + emitted option is not output, only the value (if visible to you). + For instance, "exim -n -bP pid_file_path" should just emit a pathname + followed by a newline, and no other text. + + 3. When built with SUPPORT_TLS and USE_GNUTLS, the SMTP transport driver now + has a "tls_dh_min_bits" option, to set the minimum acceptable number of + bits in the Diffie-Hellman prime offered by a server (in DH ciphersuites) + acceptable for security. (Option accepted but ignored if using OpenSSL). + Defaults to 1024, the old value. May be lowered only to 512, or raised as + far as you like. Raising this may hinder TLS interoperability with other + sites and is not currently recommended. Lowering this will permit you to + establish a TLS session which is not as secure as you might like. + + Unless you really know what you are doing, leave it alone. + + 4. If not built with DISABLE_DNSSEC, Exim now has the main option + dns_dnssec_ok; if set to 1 then Exim will initialise the resolver library + to send the DO flag to your recursive resolver. If you have a recursive + resolver, which can set the Authenticated Data (AD) flag in results, Exim + can now detect this. Exim does not perform validation itself, instead + relying upon a trusted path to the resolver. + + Current status: work-in-progress; $sender_host_dnssec variable added. + + 5. DSCP support for outbound connections: on a transport using the smtp driver, + set "dscp = ef", for instance, to cause the connections to have the relevant + DSCP (IPv4 TOS or IPv6 TCLASS) value in the header. + + Similarly for inbound connections, there is a new control modifier, dscp, + so "warn control = dscp/ef" in the connect ACL, or after authentication. + + Supported values depend upon system libraries. "exim -bI:dscp" to list the + ones Exim knows of. You can also set a raw number 0..0x3F. + + 6. The -G command-line flag is no longer ignored; it is now equivalent to an + ACL setting "control = suppress_local_fixups". The -L command-line flag + is now accepted and forces use of syslog, with the provided tag as the + process name. A few other flags used by Sendmail are now accepted and + ignored. + + 7. New cutthrough routing feature. Requested by a "control = cutthrough_delivery" + ACL modifier; works for single-recipient mails which are received on and + deliverable via SMTP. Using the connection made for a recipient verify, + if requested before the verify, or a new one made for the purpose while + the inbound connection is still active. The bulk of the mail item is copied + direct from the inbound socket to the outbound (as well as the spool file). + When the source notifies the end of data, the data acceptance by the destination + is negotiated before the acceptance is sent to the source. If the destination + does not accept the mail item, for example due to content-scanning, the item + is not accepted from the source and therefore there is no need to generate + a bounce mail. This is of benefit when providing a secondary-MX service. + The downside is that delays are under the control of the ultimate destination + system not your own. + + The Received-by: header on items delivered by cutthrough is generated + early in reception rather than at the end; this will affect any timestamp + included. The log line showing delivery is recorded before that showing + reception; it uses a new ">>" tag instead of "=>". + + To support the feature, verify-callout connections can now use ESMTP and TLS. + The usual smtp transport options are honoured, plus a (new, default everything) + hosts_verify_avoid_tls. + + New variable families named tls_in_cipher, tls_out_cipher etc. are introduced + for specific access to the information for each connection. The old names + are present for now but deprecated. + + Not yet supported: IGNOREQUOTA, SIZE, PIPELINING. + + 8. New expansion operators ${listnamed:name} to get the content of a named list + and ${listcount:string} to count the items in a list. + + 9. New global option "gnutls_allow_auto_pkcs11", defaults false. The GnuTLS + rewrite in 4.80 combines with GnuTLS 2.12.0 or later, to autoload PKCS11 + modules. For some situations this is desirable, but we expect admin in + those situations to know they want the feature. More commonly, it means + that GUI user modules get loaded and are broken by the setuid Exim being + unable to access files specified in environment variables and passed + through, thus breakage. So we explicitly inhibit the PKCS11 initialisation + unless this new option is set. + + Some older OS's with earlier versions of GnuTLS might not have pkcs11 ability, + so have also added a build option which can be used to build Exim with GnuTLS + but without trying to use any kind of PKCS11 support. Uncomment this in the + Local/Makefile: + + AVOID_GNUTLS_PKCS11=yes + +10. The "acl = name" condition on an ACL now supports optional arguments. + New expansion item "${acl {name}{arg}...}" and expansion condition + "acl {{name}{arg}...}" are added. In all cases up to nine arguments + can be used, appearing in $acl_arg1 to $acl_arg9 for the called ACL. + Variable $acl_narg contains the number of arguments. If the ACL sets + a "message =" value this becomes the result of the expansion item, + or the value of $value for the expansion condition. If the ACL returns + accept the expansion condition is true; if reject, false. A defer + return results in a forced fail. + +11. Routers and transports can now have multiple headers_add and headers_remove + option lines. The concatenated list is used. + +12. New ACL modifier "remove_header" can remove headers before message gets + handled by routers/transports. + +13. New dnsdb lookup pseudo-type "a+". A sequence of "a6" (if configured), + "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 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 command-line option does not + require privilege whereas -d does. + +18. If built with EXPERIMENTAL_PRDR, per-recipient data responses per a + proposed extension to SMTP from Eric Hall. + +19. The pipe transport has gained the force_command option, to allow + decorating commands from user .forward pipe aliases with prefix + wrappers, for instance. + +20. Callout connections can now AUTH; the same controls as normal delivery + connections apply. + +21. Support for DMARC, using opendmarc libs, can be enabled. It adds new + options: dmarc_forensic_sender, dmarc_history_file, and dmarc_tld_file. + 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. 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 + for use in subsequent ACL processing (typically quit or notquit ACLs). + +23. New ACL modifier "udpsend" can construct a UDP packet to send to a given + UDP host and port. + +24. New ${hexquote:..string..} expansion operator converts non-printable + characters in the string to \xNN form. + +25. Experimental TPDA (Transport Post Delivery Action) function added. + Patch provided by Axel Rau. + +26. Experimental Redis lookup added. Patch provided by Warren Baker. + + Version 4.80 ------------ @@ -76,7 +746,7 @@ Version 4.80 gnutls_require_mac & gnutls_require_protocols are no longer supported. tls_require_ciphers is now parsed by gnutls_priority_init(3) as a priority string, documentation for which is at: - http://www.gnu.org/software/gnutls/manual/html_node/Priority-Strings.html + http://www.gnutls.org/manual/html_node/Priority-Strings.html SNI support has been added to Exim's GnuTLS integration too. @@ -252,13 +922,13 @@ Version 4.73 then henceforth you will have to maintain your own local patches to strip the safeties off. - 8. There is a new expansion operator, bool_lax{}. Where bool{} uses the ACL + 8. There is a new expansion condition, bool_lax{}. Where bool{} uses the ACL condition logic to determine truth/failure and will fail to expand many strings, bool_lax{} uses the router condition logic, where most strings do evaluate true. Note: bool{00} is false, bool_lax{00} is true. - 9. Routers now support multiple "condition" tests, + 9. Routers now support multiple "condition" tests. 10. There is now a runtime configuration option "tcp_wrappers_daemon_name". Setting this allows an admin to define which entry in the tcpwrappers @@ -429,7 +1099,7 @@ 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.