{"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\/es\/blog\/news\/novaya-versiya-pochtovogo-servera-exim-4-95","title":{"rendered":"Nueva versi\u00f3n del servidor de correo Exim 4.95","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha lanzado el servidor de correo Exim 4.95, que incluye correcciones acumuladas y nuevas funciones. Seg\u00fan una encuesta automatizada de septiembre que abarc\u00f3 m\u00e1s de un mill\u00f3n de servidores de correo, la cuota de Exim es del 58% (frente al 57.59% del a\u00f1o pasado), Postfix se utiliza en el 34.92% (34.70%) de los servidores de correo, Sendmail \u2014 3.52% (3.75%), MailEnable \u2014 2% (2.07%), MDaemon \u2014 0.57% (0.73%) y Microsoft Exchange \u2014 0.32% (0.42%). Principales cambios:  <\/p>\n<ul>\n<li class=\"l\"> Se ha declarado estable el soporte para el modo de procesamiento de colas de mensajes fast-ramp, que permite acelerar el inicio de la entrega de mensajes con un gran tama\u00f1o de cola de env\u00edo y un n\u00famero significativo de mensajes dirigidos a hosts t\u00edpicos, como al enviar un gran n\u00famero de correos a importantes proveedores de correo o mediante un agente de transferencia de mensajes (smarthost). Si el modo se activa mediante la opci\u00f3n \u00abqueue_fast_ramp\u00bb y el procesamiento en dos fases de la cola (\u00ab-qq\u00bb) detecta una gran cantidad de mensajes dirigidos a un correo electr\u00f3nico espec\u00edfico, <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-shicago\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2902\">servidor<\/a>, la entrega para dicho host se iniciar\u00e1 de inmediato.\n<li class=\"l\"> Se ha estabilizado una implementaci\u00f3n alternativa del mecanismo SRS (Sender Rewriting Scheme) \u2014 \u00abSRS_NATIVE\u00bb, que no requiere dependencias externas (la antigua implementaci\u00f3n experimental necesitaba la instalaci\u00f3n de la biblioteca libsrs_alt). SRS permite reescribir la direcci\u00f3n del remitente al reenv\u00edo sin romper las verificaciones SPF (Sender Policy Framework) y asegurando que se mantenga la informaci\u00f3n del remitente para la redirecci\u00f3n <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-prohoster\/\"   title=\"el servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3022\">el servidor<\/a> de mensajes en caso de error de entrega. La esencia del m\u00e9todo es que al establecer la conexi\u00f3n se transmiten los datos de identidad con el remitente original; por ejemplo, al reescribir alice@example.org a alice@example.com se indicar\u00e1 \u00abSRS0=HHH=TT=example.org=alice@example.com\u00bb. SRS es relevante, por ejemplo, en la organizaci\u00f3n de listas de correo, donde el mensaje original se reenv\u00eda a otros destinatarios.\n<li class=\"l\"> Se ha estabilizado la opci\u00f3n TLS_RESUME, que permite reanudar una conexi\u00f3n TLS previamente interrumpida.\n<li class=\"l\"> Se ha estabilizado el soporte para la base de datos embebida de alto rendimiento LMDB, que almacena datos en formato clave-valor. Solo se admiten consultas de b\u00fasqueda desde bases de datos existentes por una clave (la escritura desde exim en LMDB no est\u00e1 implementada). Por ejemplo, para verificar el dominio del remitente en las reglas se puede utilizar una consulta del tipo \u00ab${lookup{$sender_address_domain}lmdb{\/var\/lib\/spamdb\/stopdomains.mdb}}\u00bb.\n<li class=\"l\"> Se ha a\u00f1adido la opci\u00f3n \u00abmessage_linelength_limit\u00bb para establecer un l\u00edmite en el n\u00famero de caracteres por l\u00ednea.\n<li class=\"l\"> Se ha proporcionado la posibilidad de ignorar la cach\u00e9 al realizar consultas de lookup.\n<li class=\"l\"> Para el transporte appendfile se ha implementado una verificaci\u00f3n de cuotas durante la recepci\u00f3n de mensajes (sesi\u00f3n SMTP).\n<li class=\"l\"> En las consultas de lookup a SQLite se ha a\u00f1adido el soporte de la opci\u00f3n \"file=\", que permite especificar un fichero de base de datos para una operaci\u00f3n concreta sin necesidad de indicar prefijos en la cadena de comandos SQL.\n<li class=\"l\"> En las consultas de lookup a Lsearch se ha a\u00f1adido el soporte de la opci\u00f3n \"ret=full\" para devolver todo el bloque de datos correspondiente a la clave, en lugar de solo la primera l\u00ednea.\n<li class=\"l\"> La configuraci\u00f3n de conexiones TLS se ha acelerado mediante la precarga y el almacenamiento en cach\u00e9 de informaci\u00f3n (como certificados) en lugar de cargarla antes de iniciar el procesamiento de cada conexi\u00f3n.\n<li class=\"l\"> Se ha a\u00f1adido el par\u00e1metro \"proxy_protocol_timeout\" para configurar el tiempo de espera para el protocolo Proxy.\n<li class=\"l\"> Se ha a\u00f1adido el par\u00e1metro \"smtp_backlog_monitor\" para habilitar el registro de la informaci\u00f3n sobre el tama\u00f1o de la cola de conexiones pendientes (backlog).\n<li class=\"l\"> Se ha a\u00f1adido el par\u00e1metro \"hosts_require_helo\", que proh\u00edbe la transmisi\u00f3n del comando MAIL si previamente no se ha enviado el comando HELO o EHLO.\n<li class=\"l\"> Se ha a\u00f1adido el par\u00e1metro \"allow_insecure_tainted_data\", mediante el cual la exposici\u00f3n insegura de caracteres especiales en los datos generar\u00e1 una advertencia en lugar de un error.\n<li class=\"l\"> Se ha dejado de dar soporte a la plataforma macOS (los archivos de compilaci\u00f3n se han trasladado a la categor\u00eda unsupported).<br \/>\n<br \/>Fuente: <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 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\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 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