{"id":5295,"date":"2025-12-19T20:00:31","date_gmt":"2025-12-19T20:00:31","guid":{"rendered":"https:\/\/mgcomdev.wpenginepowered.com\/glossary\/mail-transfer-agent-2\/"},"modified":"2026-09-08T23:09:41","modified_gmt":"2026-09-08T23:09:41","slug":"agent-transfert-email","status":"publish","type":"glossary","link":"https:\/\/www.mailgun.com\/fr\/glossaire\/agent-transfert-email\/","title":{"rendered":"Agent de transfert d&#8217;email (MTA)"},"content":{"rendered":"<h1>Agent de transfert d&#8217;email (MTA)<\/h1>\n<p><span data-contrast=\"none\">Un MTA (agent de transfert d&#8217;email) est un logiciel serveur qui envoie, re\u00e7oit et achemine les messages email sur Internet via le protocole SMTP (Simple Mail Transfer Protocol). Les MTA g\u00e8rent l&rsquo;\u00e9change d&#8217;emails en arri\u00e8re-plan entre les serveurs, d\u00e9pla\u00e7ant les messages du domaine de l&rsquo;exp\u00e9diteur vers celui du destinataire.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Lorsque vous envoyez un email, votre MTA se connecte au MTA du destinataire et tente la livraison. En cours de route, le message peut transiter par plusieurs MTA, chacun enregistrant, mettant en file d&rsquo;attente ou acheminant l&#8217;email en fonction des politiques et de la disponibilit\u00e9 du serveur.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Dans l&rsquo;infrastructure d&#8217;email\u00a0:<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"73\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"none\">Les MTA<\/span><\/b><span data-contrast=\"none\"> transmettent les messages<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"73\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"none\">Les MUA (agents utilisateur d&#8217;email)<\/span><\/b><span data-contrast=\"none\"> sont des applications c\u00f4t\u00e9 client (par ex., Outlook, Apple Mail)<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"73\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><b><span data-contrast=\"none\">Les MDA (agents de livraison d&#8217;email)<\/span><\/b><span data-contrast=\"none\"> stockent les messages dans les bo\u00eetes de r\u00e9ception<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"none\">Pour les exp\u00e9diteurs, les MTA\u00a0:<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"74\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"none\">Appliquent les protocoles d&rsquo;authentification (SPF, DKIM, DMARC)<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"74\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"none\">G\u00e8rent les nouvelles tentatives et les r\u00e9ponses d&rsquo;erreur (par ex., les rebonds)<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"74\" data-list-defn-props=\"{\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"none\">Sont \u00e9valu\u00e9s par les fournisseurs de messagerie en fonction de leur r\u00e9putation d&rsquo;envoi<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"none\">Mailgun agit en tant que MTA, offrant des interfaces <a href=\"https:\/\/www.mailgun.com\/blog\/email\/difference-between-smtp-and-api\/?utm_source=google&#038;utm_medium=cpc&#038;utm_campaign=NA%20%7C%20Brand&#038;utm_id=750089235&#038;utm_content=44926653532&#038;utm_term=mailgun%20api&#038;gad_source=1&#038;gad_campaignid=750089235&#038;gbraid=0AAAAAofVncceW_Nvx3-twdaDpiReB3GU6&#038;gclid=EAIaIQobChMIufbQrLjKkQMVPDUIBR3b1h0tEAAYASAAEgJbs_D_BwE\">API et SMTP<\/a> pour l&rsquo;envoi.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Agent de transfert d&#8217;email (MTA) Un MTA (agent de transfert d&#8217;email) est un logiciel serveur qui envoie, re\u00e7oit et achemine les messages email sur Internet via le protocole SMTP (Simple Mail Transfer Protocol). Les MTA g\u00e8rent l&rsquo;\u00e9change d&#8217;emails en arri\u00e8re-plan entre les serveurs, d\u00e9pla\u00e7ant les messages du domaine de l&rsquo;exp\u00e9diteur vers celui du destinataire.\u00a0 Lorsque [&hellip;]<\/p>\n","protected":false},"author":1,"template":"","meta":{"_acf_changed":false},"class_list":["post-5295","glossary","type-glossary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Agent de transfert d&#039;email (MTA) \u2013 Glossaire d&#039;email<\/title>\n<meta name=\"description\" content=\"Un agent de transfert d&#039;email (MTA) est un programme sur un serveur d&#039;email qui re\u00e7oit et relaie les emails. 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