{"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\/fr\/blog\/news\/novaya-versiya-pochtovogo-servera-exim-4-95","title":{"rendered":"Nouvelle version du serveur de messagerie Exim 4.95","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>La version du serveur de messagerie Exim 4.95 a \u00e9t\u00e9 publi\u00e9e, incorporant les corrections en attente et ajoutant de nouvelles fonctionnalit\u00e9s. Selon un sondage automatis\u00e9 de septembre men\u00e9 aupr\u00e8s de plus d'un million de serveurs de messagerie, la part d'Exim s'\u00e9l\u00e8ve \u00e0 58 % (contre 57,59 % l'ann\u00e9e derni\u00e8re), Postfix est utilis\u00e9 sur 34,92 % (34,70 %) des serveurs de messagerie, Sendmail \u2014 3,52 % (3,75 %), MailEnable \u2014 2 % (2,07 %), MDaemon \u2014 0,57 % (0,73 %), Microsoft Exchange \u2014 0,32 % (0,42 %). Les principales modifications :  <\/p>\n<ul>\n<li class=\"l\"> Le support du mode de traitement des files d'attente de messages fast-ramp a \u00e9t\u00e9 d\u00e9clar\u00e9 stable, ce qui permet d'acc\u00e9l\u00e9rer le d\u00e9but de la livraison des messages en cas de grande taille de la file d'attente d'envoi et d'un nombre consid\u00e9rable de messages destin\u00e9s \u00e0 des h\u00f4tes standard, par exemple lors de l'envoi d'un grand nombre de courriels \u00e0 de grands fournisseurs de services de messagerie ou via un agent de transport interm\u00e9diaire (smarthost). Si le mode est activ\u00e9 avec l'option \u00ab queue_fast_ramp \u00bb et que le traitement en deux \u00e9tapes de la file d'attente (\u00ab -qq \u00bb) d\u00e9tecte une grande quantit\u00e9 de messages adress\u00e9s \u00e0 un certain serveur de messagerie, <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/server\/dts-shicago\/\"   title=\"serveur\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2902\">serveur<\/a>, la livraison pour cet h\u00f4te commencera imm\u00e9diatement.\n<li class=\"l\"> L'impl\u00e9mentation alternative du m\u00e9canisme SRS (Sender Rewriting Scheme) \u2014 \u00ab SRS_NATIVE \u00bb \u2014 a \u00e9t\u00e9 stabilis\u00e9e, ne n\u00e9cessitant aucune d\u00e9pendance externe (l'ancienne impl\u00e9mentation exp\u00e9rimentale exigeait l'installation de la biblioth\u00e8que libsrs_alt). SRS permet de r\u00e9\u00e9crire l'adresse de l'exp\u00e9diteur lors du transfert sans compromettre les v\u00e9rifications SPF (Sender Policy Framework) tout en pr\u00e9servant les informations sur l'exp\u00e9diteur pour la redirection des <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/server\/dts-prohoster\/\"   title=\"serveur\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3022\">serveur<\/a> messages en cas d'\u00e9chec de livraison. L'id\u00e9e du processus est qu'au moment de l'\u00e9tablissement de la connexion, des informations sur l'identit\u00e9 de l'exp\u00e9diteur d'origine sont transmises, par exemple, en r\u00e9\u00e9crivant alice@example.org en alice@example.com, il sera indiqu\u00e9 \u00ab SRS0=HHH=TT=example.org=alice@example.com \u00bb. SRS est pertinent, par exemple, lors de la gestion de listes de diffusion, o\u00f9 le message d'origine est redirig\u00e9 vers d'autres destinataires.\n<li class=\"l\"> L'option TLS_RESUME, permettant de reprendre une connexion TLS pr\u00e9c\u00e9demment interrompue, a \u00e9t\u00e9 stabilis\u00e9e.\n<li class=\"l\"> La prise en charge de la base de donn\u00e9es embarqu\u00e9e compacte et haute performance LMDB, stockant les donn\u00e9es au format cl\u00e9-valeur, a \u00e9t\u00e9 stabilis\u00e9e. Seules les requ\u00eates de recherche \u00e0 partir de bases de donn\u00e9es existantes par cl\u00e9 unique sont prises en charge (l'enregistrement \u00e0 partir d'exim dans LMDB n'est pas mis en \u0153uvre). Par exemple, pour v\u00e9rifier le domaine de l'exp\u00e9diteur dans les r\u00e8gles, une requ\u00eate du type \u00ab ${lookup{$sender_address_domain}lmdb{\/var\/lib\/spamdb\/stopdomains.mdb}} \u00bb peut \u00eatre utilis\u00e9e.\n<li class=\"l\"> Une option \u00ab message_linelength_limit \u00bb a \u00e9t\u00e9 ajout\u00e9e pour d\u00e9finir une limite sur le nombre de caract\u00e8res par ligne.\n<li class=\"l\"> Il est d\u00e9sormais possible d'ignorer le cache lors de l'ex\u00e9cution des requ\u00eates lookup.\n<li class=\"l\"> Pour le transport appendfile, une v\u00e9rification des quotas a \u00e9t\u00e9 ajout\u00e9e lors de la r\u00e9ception d'un message (session SMTP).\n<li class=\"l\"> La requ\u00eate lookup pour SQLite a \u00e9t\u00e9 am\u00e9lior\u00e9e avec l'option \u00ab file= \u00bb, permettant de sp\u00e9cifier un fichier de base de donn\u00e9es pour une op\u00e9ration particuli\u00e8re sans indiquer de pr\u00e9fixes dans la ligne de commande SQL.\n<li class=\"l\"> La requ\u00eate lookup pour Lsearch a \u00e9t\u00e9 am\u00e9lior\u00e9e avec l'option \u00ab ret=full \u00bb pour renvoyer l'ensemble du bloc de donn\u00e9es correspondant \u00e0 la cl\u00e9, et non seulement la premi\u00e8re ligne.\n<li class=\"l\"> L'\u00e9tablissement des connexions TLS a \u00e9t\u00e9 acc\u00e9l\u00e9r\u00e9 gr\u00e2ce au pr\u00e9chargement et \u00e0 la mise en cache d'informations (par exemple, des certificats) au lieu de les charger avant de traiter chaque connexion.\n<li class=\"l\"> Un param\u00e8tre \u00ab proxy_protocol_timeout \u00bb a \u00e9t\u00e9 ajout\u00e9 pour configurer le timeout du protocole Proxy.\n<li class=\"l\"> Un param\u00e8tre \u00ab smtp_backlog_monitor \u00bb a \u00e9t\u00e9 ajout\u00e9 pour activer l'enregistrement dans le journal des informations sur la taille de la file d'attente des connexions en attente (backlog).\n<li class=\"l\"> Un param\u00e8tre \u00ab hosts_require_helo \u00bb a \u00e9t\u00e9 ajout\u00e9, interdisant l'envoi de la commande MAIL si la commande HELO ou EHLO n'a pas \u00e9t\u00e9 envoy\u00e9e auparavant.\n<li class=\"l\"> Un param\u00e8tre \u00ab allow_insecure_tainted_data \u00bb a \u00e9t\u00e9 ajout\u00e9, permettant d'afficher un avertissement au lieu d'une erreur si un \u00e9chappement dangereux des caract\u00e8res sp\u00e9ciaux dans les donn\u00e9es est d\u00e9tect\u00e9.\n<li class=\"l\"> La prise en charge de la plateforme macOS a \u00e9t\u00e9 interrompue (les fichiers de construction ont \u00e9t\u00e9 transf\u00e9r\u00e9s dans la cat\u00e9gorie non pris en charge).<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 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