{"id":163289,"date":"2026-03-06T11:11:58","date_gmt":"2026-03-06T09:11:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-pochtovyj-server-postfix-3-11-0"},"modified":"2026-03-06T11:11:58","modified_gmt":"2026-03-06T09:11:58","slug":"opublikovan-pochtovyj-server-postfix-3-11-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/opublikovan-pochtovyj-server-postfix-3-11-0","title":{"rendered":"Postfix mail server 3.11.0 has been released","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>After a year of development, the release of the new stable branch of the Postfix mail server \u2014 3.12.0 has been published. At the same time, support for the Postfix 3.7 branch, released in early 2022, has been discontinued. The project's code is written in C and is distributed under the EPL 2.0 (Eclipse Public License) and IPL 1.0 (IBM Public License).    <\/p>\n<p>Postfix is one of the few projects that combines high security, reliability, and performance, which has been achieved through a multi-processing architecture that isolates individual handlers, as well as a strict code formatting policy and patch auditing. To protect against memory-related errors, the project uses protected versions of functions for memory allocation and deallocation, as well as a set of abstract wrapper functions for handling buffers (checking for buffer overflows and access to freed memory), file operations, output formatting, buffered input\/output, and string manipulations (including capabilities for working with arbitrary-sized strings and automatic resizing of strings).      <\/p>\n<p> According to the final automated survey of about 500,000 mail servers (after July 2025, report publication will be discontinued), Postfix is used on 37.88% (up from 36.81% last year) of mail servers, Exim accounts for 55.59% (down from 56.61% last year), Sendmail \u2014 3.55% (down from 3.60%), MailEnable \u2014 1.81% (down from 1.82%), MDaemon \u2014 0.40% (unchanged), Microsoft Exchange \u2014 0.20% (up from 0.19%), and OpenSMTPD \u2014 0.12% (up from 0.09%). <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/\" title=\"servers\" data-wpil-keyword-link=\"linked\">servers<\/a> (after July 2025, reporting will cease), Postfix is used on 37.88% (up from 36.81% a year ago) of mail servers, Exim's share is 55.59% (down from 56.61% a year ago), Sendmail \u2014 3.55% (3.60%), MailEnable \u2014 1.81% (1.82%), MDaemon \u2014 0.40% (0.40%), Microsoft Exchange \u2014 0.20% (0.19%), OpenSMTPD \u2014 0.12% (0.09%).          <\/p>\n<p>Key innovations:  <\/p>\n<ul>\n<li class=\"l\"> Work has been done to simplify migration from hash: and btree: database types to lmdb: or cdb: due to the discontinuation of BerkeleyDB libraries in some Linux distributions. To maintain compatibility with the Mailman toolkit, which executes the command postmap hash:\/path\/to\/file when adding or deleting mailing lists, Postfix has added support for automatically redirecting such commands to options with supported DB types.\n<li class=\"l\"> By default, connections to SMTP servers using TLS encryption are enabled. In the SMTP client settings, the smtp_tls_security_level parameter is set to 'may' if Postfix is built with TLS support. The value 'may' allows the use of TLS for servers that support encryption but permits falling back to unencrypted data transmission if the server does not support TLS.\n<li class=\"l\"> Support for the REQUIRETLS extension (RFC 8689) has been implemented in ESMTP, allowing the sender to request guaranteed TLS encryption throughout the message delivery path. In this mode, any SMTP and LMTP server involved in forwarding the message must support REQUIRETLS and strict authentication via DANE or STS, and when transmitting messages through a chain of other servers, REQUIRETLS must also be used.\n<li class=\"l\"> TLS security level logging has been implemented, meaning that if the REQUIRETLS level is requested for message transmission, information about the use of REQUIRETLS will now be saved in the log.\n<li class=\"l\">  A new parameter smtp_tls_enforce_sts_mx_patterns has been added, enabling compatibility mode between the Postfix SMTP client and MTA-STS (MTA Strict Transport Security) plugins, which require TLSRPT support to redirect STS attributes. When this parameter is enabled by default, the Postfix SMTP client will connect to the MX server only if its name matches the pattern specified in the STS policies. Otherwise, the old behavior will be used \u2014 the ability to connect to MX servers based on MX records in DNS, provided the server certificate complies with STS policies. The MTA-STS mechanism allows informing the client that established a connection over an unsecured link about the possibility and parameters for establishing a secure TLS connection. Support for this parameter has also been added to the postfix-tlspol and postfix-mta-sts-resolver utilities.\n<li class=\"l\"> Support for encryption algorithms resistant to quantum computer attacks has been added, when compiled with OpenSSL 3.5 and newer releases.\n<li class=\"l\"> Sixteen configuration parameters have been deprecated, usage of which will now trigger a warning in the log about their removal in a future release. Among the deprecated parameters are, for example, 'virtual_maps', 'fallback_relay', 'postscreen_whitelist_interfaces', and 'smtpd_client_connection_limit_exceptions'.\n<li class=\"l\"> Support for outputting data in JSON format has been added for the commands: 'postconf -j|-jM|-jF|-jP', 'postalias -jq|-js', 'postmap -jq|-js', and 'postmulti -jl'.\n<li class=\"l\"> Error handling in Milter filters has been improved, specifically for issues arising while processing messages received through long-established SMTP connections. The value of the #milter_default_action parameter has been changed from 'tempfail' to 'shutdown', which implies closing the connection with the client.        <\/ul>\n<p>Source: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64928\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u043d\u043e\u0432\u043e\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Postfix &#8212; 3.12.0. \u0412 \u0442\u043e \u0436\u0435 \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u043e \u043e \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0432\u0435\u0442\u043a\u0438 Postfix 3.7, \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0439 \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 2022 \u0433\u043e\u0434\u0430. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u044f\u043c\u0438 EPL 2.0 (Eclipse Public license) \u0438 IPL 1.0 (IBM Public License). 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