{"id":101456,"date":"2021-09-29T16:22:36","date_gmt":"2021-09-29T14:22:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/novaya-versiya-pochtovogo-servera-exim-4-95"},"modified":"2021-09-29T16:22:36","modified_gmt":"2021-09-29T14:22:36","slug":"novaya-versiya-pochtovogo-servera-exim-4-95","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/novaya-versiya-pochtovogo-servera-exim-4-95","title":{"rendered":"New version of the Exim mail server 4.95","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>The release of the Exim 4.95 mail server has occurred, which includes accumulated fixes and new capabilities. According to the automated survey conducted in September involving over a million mail servers, Exim holds a 58% share (up from 57.59% a year ago), Postfix is used on 34.92% (up from 34.70%), Sendmail \u2014 3.52% (down from 3.75%), MailEnable \u2014 2% (down from 2.07%), MDaemon \u2014 0.57% (down from 0.73%), and Microsoft Exchange \u2014 0.32% (down from 0.42%). The main changes are:  <\/p>\n<ul>\n<li class=\"l\"> Stable support has been announced for the fast-ramp message queue processing mode, which allows for quicker initiation of message delivery when there is a large volume in the outgoing queue and a significant number of messages directed to standard hosts, such as when sending many emails to large mail providers or through a mail transfer agent (smarthost). When enabled with the option 'queue_fast_ramp' and the two-stage queue processing ('-qq') detects a large batch of messages addressed to a specific mail server, <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2902\">server<\/a>, delivery for that host will begin immediately.\n<li class=\"l\"> An alternative implementation of the SRS (Sender Rewriting Scheme) mechanism \u2014 'SRS_NATIVE' has been stabilized, which does not require external dependencies (the old experimental implementation necessitated the installation of the libsrs_alt library). SRS allows the sender's address to be rewritten during forwarding without violating SPF (Sender Policy Framework) checks and ensures the sender's data is retained for directing <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/dts-prohoster\/\"   title=\"proxy server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3022\">proxy server<\/a> messages in case of delivery failure. The essence of the method is that when establishing a connection, information about the identity with the original sender is transmitted; for example, when rewriting alice@example.org to alice@example.com, it will indicate 'SRS0=HHH=TT=example.org=alice@example.com'. SRS is relevant, for example, when organizing mailing lists, where the original message is forwarded to other recipients.\n<li class=\"l\"> The TLS_RESUME option has been stabilized, enabling the resumption of previously interrupted TLS connections.\n<li class=\"l\"> Support for the high-performance compact embedded database LMDB, which stores data in a key-value format, has been stabilized. Only lookup queries from existing databases by a single key are supported (writing from Exim to LMDB is not implemented). For instance, to check the sender's domain in the rules, a query of the form '${lookup{$sender_address_domain}lmdb{\/var\/lib\/spamdb\/stopdomains.mdb}}' can be used.\n<li class=\"l\"> An option 'message_linelength_limit' has been added to set a limit on the number of characters in a line.\n<li class=\"l\"> It is now possible to ignore the cache when performing lookup requests.\n<li class=\"l\"> For the appendfile transport, a quota check has been implemented during message reception (SMTP session).\n<li class=\"l\"> The lookup queries for SQLite now support the option &#171;file=&lt;path&gt;&#187;, allowing you to specify a database file for a specific operation without needing to include prefixes in the SQL command string.\n<li class=\"l\"> The lookup queries for Lsearch now support the option &#171;ret=full&#187; to return the entire block of data corresponding to the key, rather than just the first row.\n<li class=\"l\"> Establishing TLS connections has been accelerated through preloading and caching information (such as certificates) instead of loading it before each connection handling.\n<li class=\"l\"> A &#171;proxy_protocol_timeout&#187; parameter has been added to configure the timeout for the Proxy protocol.\n<li class=\"l\"> A &#171;smtp_backlog_monitor&#187; parameter has been added to enable logging of information about the size of the backlog of pending connections.\n<li class=\"l\"> A &#171;hosts_require_helo&#187; parameter has been added, which prohibits sending the MAIL command unless the HELO or EHLO command has been issued previously.\n<li class=\"l\"> A &#171;allow_insecure_tainted_data&#187; parameter has been added, which, when specified, will cause unsafe escaping of special characters in data to output a warning instead of an error.\n<li class=\"l\"> Support for the macOS platform has been discontinued (build files have been moved to the unsupported category).<br \/>\n<br \/>Source: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55882\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim 4.95, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043d\u0435\u0441\u0435\u043d\u044b \u043d\u0430\u043a\u043e\u043f\u0438\u0432\u0448\u0438\u0435\u0441\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u043e\u0432\u044b\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438. \u0412 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0441 \u0441\u0435\u043d\u0442\u044f\u0431\u0440\u044c\u0441\u043a\u0438\u043c \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043e\u043f\u0440\u043e\u0441\u043e\u043c \u0431\u043e\u043b\u0435\u0435 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, \u0434\u043e\u043b\u044f Exim \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 58% (\u0433\u043e\u0434 \u043d\u0430\u0437\u0430\u0434 57.59%), Postfix \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043d\u0430 34.92% (34.70%) \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432, Sendmail &#8212; 3.52% (3.75%), MailEnable &#8212; 2% (2.07%), MDaemon &#8212; 0.57% (0.73%), Microsoft Exchange &#8212; 0.32% [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-101456","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim 4.95, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u043d\u0435\u0441\u0435\u043d\u044b \u043d\u0430\u043a\u043e\u043f\u0438\u0432\u0448\u0438\u0435\u0441\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b 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