{"id":26709,"date":"2026-11-09T15:10:32","date_gmt":"2026-11-09T15:10:32","guid":{"rendered":"https:\/\/www.mailgun.com\/blog\/smtp-mailgun-passe-tls-1-2-que-faire-avant-mise-a-jour-1-mars-2027\/"},"modified":"2026-11-09T17:17:26","modified_gmt":"2026-11-09T17:17:26","slug":"smtp-mailgun-passe-tls-1-2-que-faire-avant-mise-a-jour-1-mars-2027","status":"publish","type":"blog","link":"https:\/\/www.mailgun.com\/fr\/blog\/product\/smtp-mailgun-passe-tls-1-2-que-faire-avant-mise-a-jour-1-mars-2027\/","title":{"rendered":"Le SMTP de Mailgun passe \u00e0 TLS 1.2\u00a0: ce que vous devez faire avant la mise \u00e0 jour du 1er mars 2027"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Si votre application envoie des r\u00e9initialisations de mots de passe, des re\u00e7us, des codes de connexion ou d&rsquo;autres \u00e9l\u00e9ments de messagerie transactionnelle avec Mailgun via SMTP en utilisant une ancienne version de TLS, Mailgun ne pourra plus les accepter \u00e0 partir du 1er mars 2027.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette modification s&rsquo;applique uniquement aux envois SMTP. Voici ce qui change et comment effectuer la mise \u00e0 jour.\u00a0<\/p>\n\n\n\r\n    <nav data-content-type=\"longform\" class=\"toc-block longform-spacings px-5 py-6 px-md-6 px-lg-7 py-md-7 bg-light fs-sm rounded-lg\" aria-labelledby=\"toc-title-2973\"><p class=\"h5 m-0\" id=\"toc-title-2973\">Table des mati\u00e8res<\/p><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">01<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#que-se-passe-t-il-si-je-ne-mets-pas-tls-a-jour\">Que se passe-t-il si je ne mets pas TLS \u00e0 jour\u00a0?\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">02<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#identifiez-tout-ce-qui-envoie-via-smtp\">Identifiez tout ce qui envoie via SMTP\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">03<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#verifiez-votre-environnement\">V\u00e9rifiez votre environnement\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">04<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#python-smtplib\">Python (smtplib)\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">05<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#node-js-nodemailer\">Node.js (Nodemailer)\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">06<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#net-framework\">.NET Framework\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">07<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#relais-postfix\">Relais Postfix\u00a0<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">08<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#conclusion\">Conclusion<\/a><\/div><\/div><\/nav>\n\n\n<h1 class=\"wp-block-heading\">Ce qui change avec Mailgun\u00a0?\u00a0<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 partir du 1er mars 2027, le SMTP de Mailgun n&rsquo;acceptera que les connexions via TLS 1.2 ou une version sup\u00e9rieure. Les connexions utilisant TLS 1.0 ou 1.1 seront rejet\u00e9es, et ces messages ne seront pas envoy\u00e9s.\u00a0<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Pourquoi Mailgun abandonne TLS 1.0 et 1.1\u00a0?\u00a0<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Le protocole TLS 1.0 remonte \u00e0 1999. Les versions 1.0 et 1.1 pr\u00e9sentent toutes deux des failles connues qui ont pouss\u00e9 les principaux navigateurs \u00e0 abandonner ces protocoles en 2020, et l&rsquo;IETF \u00e0 les d\u00e9conseiller officiellement en 2021 (RFC 8996). Envoyer des messages via ces protocoles\u00a0met vos messages et vos identifiants SMTP en danger lors de leur transit.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Exiger TLS 1.2 ou une version sup\u00e9rieure prot\u00e8ge chaque exp\u00e9diteur sur la plateforme, et pas seulement ceux qui ont d\u00e9j\u00e0 fait la transition.\u00a0<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u00cates-vous concern\u00e9 par ce changement\u00a0?\u00a0<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Les exp\u00e9diteurs qui envoient des emails \u00e0 Mailgun via SMTP et dont le serveur de messagerie, l&rsquo;application ou la biblioth\u00e8que d&#8217;emails n\u00e9gocie le protocole TLS 1.0 ou 1.1. seront impact\u00e9s. Les exp\u00e9diteurs qui envoient uniquement via l&rsquo;API de Mailgun n&rsquo;ont aucune mise \u00e0 jour \u00e0 effectuer.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mailgun surveille le trafic SMTP pour d\u00e9tecter les anciennes versions de TLS. Si Mailgun d\u00e9tecte une ancienne version de TLS sur votre compte, les administrateurs recevront un email et verront une banni\u00e8re dans le tableau de bord de leur compte Mailgun. \u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Anciens environnements connus pour impacter TLS\u00a0:\u00a0<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Windows Server 2008 ou 2012, o\u00f9 TLS 1.2 n&rsquo;est pas activ\u00e9 par d\u00e9faut\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>.NET Framework 4.5 ou version ant\u00e9rieure\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Versions obsol\u00e8tes d&rsquo;OpenSSL, ou applications et plugins d&rsquo;ancienne g\u00e9n\u00e9ration qui imposent une ancienne version de TLS\u00a0<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Nous vous recommandons de passer \u00e0 TLS 1.2 ou \u00e0 une version sup\u00e9rieure d\u00e8s que possible. Pour la plupart des clients, cela signifie mettre \u00e0 jour un param\u00e8tre dans le serveur de messagerie, l&rsquo;application ou la biblioth\u00e8que d&#8217;emails que vous utilisez pour vous connecter \u00e0 Mailgun. \u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Que se passe-t-il si je ne mets pas TLS \u00e0 jour\u00a0?\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Apr\u00e8s la date butoir du 1er mars, Mailgun ne pourra plus accepter les connexions SMTP utilisant TLS 1.0 ou 1.1, ce qui impactera les messages que vous tenterez d&rsquo;envoyer.\u00a0<strong>Cela inclut les emails sur lesquels vos clients comptent, comme les r\u00e9initialisations de mot de passe et les re\u00e7us.\u00a0<\/strong><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Comment passer \u00e0 TLS 1.2\u00a0<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Suivez les \u00e9tapes ci-dessous pour vous assurer que vous \u00eates \u00e0 jour.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Identifiez tout ce qui envoie via SMTP\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">De nombreuses \u00e9quipes ont plus d&rsquo;une application qui envoie via le m\u00eame compte Mailgun. V\u00e9rifiez toutes les applications et instances o\u00f9 vos identifiants SMTP Mailgun ou smtp.mailgun.org apparaissent\u00a0:\u00a0<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vos propres applications et services, y compris les environnements de test et les t\u00e2ches en arri\u00e8re-plan\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Serveurs de messagerie ou relais, comme Postfix, qui transf\u00e8rent des emails \u00e0 Mailgun\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plugins de CMS, plateformes e-commerce et autres outils configur\u00e9s avec votre connexion SMTP\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Syst\u00e8mes de fournisseurs ou obsol\u00e8tes, comme les CRM, les ERP, les scanners ou les outils de surveillance, qui envoient des alertes\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00e9rifiez votre environnement\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dans l&rsquo;exemple curl ci-dessous, vous verrez le chat SMTP pour v\u00e9rifier quelle version de TLS vous utilisez actuellement\u00a0: \u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>openssl s_client -connect smtp.mailgun.org:587 -starttls smtp -tls1_2\u00a0<\/code><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un handshake r\u00e9ussi affiche la cha\u00eene de certificats et \u00ab\u00a0Protocol\u00a0: TLSv1.2\u00a0\u00bb ou une version sup\u00e9rieure.\u00a0<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Comment savoir si la mise \u00e0 jour est r\u00e9ussie\u00a0?\u00a0<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Utilisez les exemples de code ci-dessous pour valider que votre service ex\u00e9cute TLS 1.2 ou une version ult\u00e9rieure lors de la connexion \u00e0 Mailgun pour l&rsquo;envoi de messages via SMTP. \u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Python (smtplib)\u00a0<\/h2>\n\n\n    <div data-content-type=\"longform\" class=\"code-snippet longform-spacings rounded-lg overflow-hidden shadow \" data-count=\"1\">\r\n        <ul class=\"nav nav-buttons code-snippet__tabs longform-except position-relative d-flex gap-2 flex-wrap p-3\" role=\"tablist\">\r\n\r\n                            \r\n                    \r\n                        <li class=\"nav-item\" role=\"presentation\">\r\n                            <button class=\"nav-link active\" data-bs-toggle=\"tab\" data-bs-target=\"#block-4db24e5467f569e24cf2e508d8458a48_code_0\" type=\"button\" role=\"tab\" aria-controls=\"block-4db24e5467f569e24cf2e508d8458a48_code_0\" aria-selected=\"true\">\r\n                                Python                            <\/button>\r\n                        <\/li>\r\n\r\n                    \r\n                            \r\n        <\/ul>\r\n        <div class=\"code-snippet__tab-content tab-content\">\r\n\r\n                            \r\n                    <div class=\"tab-pane show active\" id=\"block-4db24e5467f569e24cf2e508d8458a48_code_0\" role=\"tabpanel\" aria-labelledby=\"block-4db24e5467f569e24cf2e508d8458a48_code_0\">\r\n                        <div class=\"code-snippet__code-wrapper\">\r\n                            <div class=\"nav nav-buttons code-snippet__copy-wrapper\">\r\n                                <button type=\"button\" class=\"nav-link code-snippet__copy\" data-clipboard-target=\"#block-4db24e5467f569e24cf2e508d8458a48_code_0_content\" data-clipboard-label=\"Copier dans le presse-papiers\" data-clipboard-success-label=\"Copi\u00e9\u00a0!\" data-clipboard-error-label=\"Impossible de copier\" data-tooltip=\"Copier dans le presse-papiers\" data-tooltip-placement=\"left\" role=\"tooltip\" aria-label=\"Copier dans le presse-papiers\">\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--default\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/file-stack.svg\"><\/svg>\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--success\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/badge-check.svg\"><\/svg>\r\n                                <\/button>\r\n                            <\/div>\r\n                                                        <pre class=\"w-100 h-100 m-0 line-numbers language-Python\" tabindex=\"0\">\r\n                                <code id=\"block-4db24e5467f569e24cf2e508d8458a48_code_0_content\" class=\"language-Python\">\r\n\r\n                                    \r\nimport smtplib, ssl \r\n\r\ncontext = ssl.create_default_context() \r\n\r\ncontext.minimum_version = ssl.TLSVersion.TLSv1_2 \r\n\r\n  \r\n\r\nwith smtplib.SMTP(&quot;smtp.mailgun.org&quot;, 587) as server: \r\n\r\n    server.starttls(context=context) \r\n\r\n    server.login(SMTP_USER, SMTP_PASSWORD) \r\n                                <\/code>\r\n                            <\/pre>\r\n                        <\/div>\r\n                    <\/div>\r\n                                    <\/div>\r\n    <\/div>\r\n\n\n\n<h2 class=\"wp-block-heading\">Node.js (Nodemailer)\u00a0<\/h2>\n\n\n    <div data-content-type=\"longform\" class=\"code-snippet longform-spacings rounded-lg overflow-hidden shadow \" data-count=\"1\">\r\n        <ul class=\"nav nav-buttons code-snippet__tabs longform-except position-relative d-flex gap-2 flex-wrap p-3\" role=\"tablist\">\r\n\r\n                            \r\n                    \r\n                        <li class=\"nav-item\" role=\"presentation\">\r\n                            <button class=\"nav-link active\" data-bs-toggle=\"tab\" data-bs-target=\"#block-51e6d959ad3c46a82f482b11c72ebe2f_code_0\" type=\"button\" role=\"tab\" aria-controls=\"block-51e6d959ad3c46a82f482b11c72ebe2f_code_0\" aria-selected=\"true\">\r\n                                Javascript                            <\/button>\r\n                        <\/li>\r\n\r\n                    \r\n                            \r\n        <\/ul>\r\n        <div class=\"code-snippet__tab-content tab-content\">\r\n\r\n                            \r\n                    <div class=\"tab-pane show active\" id=\"block-51e6d959ad3c46a82f482b11c72ebe2f_code_0\" role=\"tabpanel\" aria-labelledby=\"block-51e6d959ad3c46a82f482b11c72ebe2f_code_0\">\r\n                        <div class=\"code-snippet__code-wrapper\">\r\n                            <div class=\"nav nav-buttons code-snippet__copy-wrapper\">\r\n                                <button type=\"button\" class=\"nav-link code-snippet__copy\" data-clipboard-target=\"#block-51e6d959ad3c46a82f482b11c72ebe2f_code_0_content\" data-clipboard-label=\"Copier dans le presse-papiers\" data-clipboard-success-label=\"Copi\u00e9\u00a0!\" data-clipboard-error-label=\"Impossible de copier\" data-tooltip=\"Copier dans le presse-papiers\" data-tooltip-placement=\"left\" role=\"tooltip\" aria-label=\"Copier dans le presse-papiers\">\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--default\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/file-stack.svg\"><\/svg>\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--success\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/badge-check.svg\"><\/svg>\r\n                                <\/button>\r\n                            <\/div>\r\n                                                        <pre class=\"w-100 h-100 m-0 line-numbers language-Javascript\" tabindex=\"0\">\r\n                                <code id=\"block-51e6d959ad3c46a82f482b11c72ebe2f_code_0_content\" class=\"language-Javascript\">\r\n\r\n                                    \r\nconst transporter = nodemailer.createTransport({ \r\n\r\n  host: &quot;smtp.mailgun.org&quot;, \r\n\r\n  port: 587, \r\n\r\n  auth: { user: SMTP_USER, pass: SMTP_PASSWORD }, \r\n\r\n  tls: { minVersion: &quot;TLSv1.2&quot; }, \r\n\r\n}); \r\n                                <\/code>\r\n                            <\/pre>\r\n                        <\/div>\r\n                    <\/div>\r\n                                    <\/div>\r\n    <\/div>\r\n\n\n\n<h2 class=\"wp-block-heading\">.NET Framework\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Sur .NET 4.5, ajoutez cette ligne avant de vous connecter. Les versions 4.6 et ult\u00e9rieures utilisent TLS 1.2 par d\u00e9faut.\u00a0<\/p>\n\n\n    <div data-content-type=\"longform\" class=\"code-snippet longform-spacings rounded-lg overflow-hidden shadow \" data-count=\"1\">\r\n        <ul class=\"nav nav-buttons code-snippet__tabs longform-except position-relative d-flex gap-2 flex-wrap p-3\" role=\"tablist\">\r\n\r\n                            \r\n                    \r\n                        <li class=\"nav-item\" role=\"presentation\">\r\n                            <button class=\"nav-link active\" data-bs-toggle=\"tab\" data-bs-target=\"#block-72680f01ef97502a6cb81448c46ce4c0_code_0\" type=\"button\" role=\"tab\" aria-controls=\"block-72680f01ef97502a6cb81448c46ce4c0_code_0\" aria-selected=\"true\">\r\n                                C#                            <\/button>\r\n                        <\/li>\r\n\r\n                    \r\n                            \r\n        <\/ul>\r\n        <div class=\"code-snippet__tab-content tab-content\">\r\n\r\n                            \r\n                    <div class=\"tab-pane show active\" id=\"block-72680f01ef97502a6cb81448c46ce4c0_code_0\" role=\"tabpanel\" aria-labelledby=\"block-72680f01ef97502a6cb81448c46ce4c0_code_0\">\r\n                        <div class=\"code-snippet__code-wrapper\">\r\n                            <div class=\"nav nav-buttons code-snippet__copy-wrapper\">\r\n                                <button type=\"button\" class=\"nav-link code-snippet__copy\" data-clipboard-target=\"#block-72680f01ef97502a6cb81448c46ce4c0_code_0_content\" data-clipboard-label=\"Copier dans le presse-papiers\" data-clipboard-success-label=\"Copi\u00e9\u00a0!\" data-clipboard-error-label=\"Impossible de copier\" data-tooltip=\"Copier dans le presse-papiers\" data-tooltip-placement=\"left\" role=\"tooltip\" aria-label=\"Copier dans le presse-papiers\">\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--default\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/file-stack.svg\"><\/svg>\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--success\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/badge-check.svg\"><\/svg>\r\n                                <\/button>\r\n                            <\/div>\r\n                                                        <pre class=\"w-100 h-100 m-0 line-numbers language-csharp\" tabindex=\"0\">\r\n                                <code id=\"block-72680f01ef97502a6cb81448c46ce4c0_code_0_content\" class=\"language-csharp\">\r\n\r\n                                    \r\nSystem.Net.ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12; \r\n                                <\/code>\r\n                            <\/pre>\r\n                        <\/div>\r\n                    <\/div>\r\n                                    <\/div>\r\n    <\/div>\r\n\n\n\n<h2 class=\"wp-block-heading\">Relais Postfix\u00a0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Si Postfix relaie vos emails vers Mailgun, d\u00e9finissez le protocole minimum dans main.cf (Postfix 3.6 ou version ult\u00e9rieure), puis rechargez Postfix\u00a0:\u00a0<\/p>\n\n\n    <div data-content-type=\"longform\" class=\"code-snippet longform-spacings rounded-lg overflow-hidden shadow \" data-count=\"1\">\r\n        <ul class=\"nav nav-buttons code-snippet__tabs longform-except position-relative d-flex gap-2 flex-wrap p-3\" role=\"tablist\">\r\n\r\n                            \r\n                    \r\n                        <li class=\"nav-item\" role=\"presentation\">\r\n                            <button class=\"nav-link active\" data-bs-toggle=\"tab\" data-bs-target=\"#block-7144cb3a1b2b0c00cc2e6595543bff47_code_0\" type=\"button\" role=\"tab\" aria-controls=\"block-7144cb3a1b2b0c00cc2e6595543bff47_code_0\" aria-selected=\"true\">\r\n                                C#                            <\/button>\r\n                        <\/li>\r\n\r\n                    \r\n                            \r\n        <\/ul>\r\n        <div class=\"code-snippet__tab-content tab-content\">\r\n\r\n                            \r\n                    <div class=\"tab-pane show active\" id=\"block-7144cb3a1b2b0c00cc2e6595543bff47_code_0\" role=\"tabpanel\" aria-labelledby=\"block-7144cb3a1b2b0c00cc2e6595543bff47_code_0\">\r\n                        <div class=\"code-snippet__code-wrapper\">\r\n                            <div class=\"nav nav-buttons code-snippet__copy-wrapper\">\r\n                                <button type=\"button\" class=\"nav-link code-snippet__copy\" data-clipboard-target=\"#block-7144cb3a1b2b0c00cc2e6595543bff47_code_0_content\" data-clipboard-label=\"Copier dans le presse-papiers\" data-clipboard-success-label=\"Copi\u00e9\u00a0!\" data-clipboard-error-label=\"Impossible de copier\" data-tooltip=\"Copier dans le presse-papiers\" data-tooltip-placement=\"left\" role=\"tooltip\" aria-label=\"Copier dans le presse-papiers\">\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--default\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/file-stack.svg\"><\/svg>\r\n                                    <svg class=\"code-snippet__copy-icon code-snippet__copy-icon--success\" width=\"24\" height=\"24\" aria-hidden=\"true\" data-url=\"https:\/\/www.mailgun.com\/wp-content\/plugins\/sinch-core\/assets\/icons\/sinch\/badge-check.svg\"><\/svg>\r\n                                <\/button>\r\n                            <\/div>\r\n                                                        <pre class=\"w-100 h-100 m-0 line-numbers language-csharp\" tabindex=\"0\">\r\n                                <code id=\"block-7144cb3a1b2b0c00cc2e6595543bff47_code_0_content\" class=\"language-csharp\">\r\n\r\n                                    \r\nsmtp_tls_protocols = &gt;=TLSv1.2\u00a0\r\n\r\nsmtp_tls_mandatory_protocols = &gt;=TLSv1.2\r\n                                <\/code>\r\n                            <\/pre>\r\n                        <\/div>\r\n                    <\/div>\r\n                                    <\/div>\r\n    <\/div>\r\n\n\n    <div data-content-type=\"longform\"  class=\"callout text-body-color px-5 py-6 px-md-6 px-lg-7 py-md-7 longform-spacings rounded-lg bg-light\" data-theme=\"light\">\r\n\r\n        <div class=\"content-body\"> <p class=\"mb-0\"><b>Astuce de pro\u00a0:<\/b>\u00a0Vous souhaitez \u00e9galement utiliser TLS sur l&rsquo;autre partie du trajet\u00a0? Ajoutez l&rsquo;en-t\u00eate X-Mailgun-Require-TLS et Mailgun enverra uniquement votre message au serveur du destinataire via une connexion s\u00e9curis\u00e9e.<br><\/p><\/div>\r\n    <\/div>\r\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">N&rsquo;oubliez pas que toutes vos modifications et mises \u00e0 jour doivent \u00eatre termin\u00e9es avant le 1er mars 2027. Notre \u00e9quipe de support est disponible pour vous aider \u00e0 vous assurer que vos comptes sont pr\u00eats \u00e0 envoyer via TLS 1.2<\/p>\n\n\n\r\n    <aside data-content-type=\"longform\"  class=\"banner-block longform-spacings rounded-lg shadow-lg px-5 py-6 px-md-6 py-md-7 p-lg-7 bg-light\" data-theme=\"dark\"  aria-labelledby=\"banner-block-block-738fe761ad7db929606d43057eba956e\">\r\n                    <p class=\"text-uppercase section-caption text-body-color\">\r\n                Support            <\/p>\r\n                            <p class=\"h4 text-accent fw-bold\" id=\"banner-block-block-738fe761ad7db929606d43057eba956e\">\r\n                Nous sommes l\u00e0 pour vous aider            <\/p>\r\n                            <div class=\"mb-0 text-body-color\">\r\n                                    <div class=\"content-body mb-0 text-body-color\"><p class=\"mb-0\">Notre \u00e9quipe support est \u00e0 votre disposition pour vous assister si vous rencontrez le moindre probl\u00e8me avec votre d\u00e9livrabilit\u00e9, lors de la conception, l&rsquo;envoi ou le suivi de vos campagnes d&#8217;emailing, et pour r\u00e9pondre \u00e0 toutes les questions que vous pouvez vous poser sur l&#8217;emailing.<\/p><\/div>\r\n                            <\/div>\r\n        \r\n        <div class=\"text-start mt-5\"><a href=\"https:\/\/www.mailgun.com\/fr\/contact\/support\/\"  class=\"btn btn-secondary\" >Contact Support<\/a><\/div>\r\n    <\/aside>\r\n\r\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 partir du 1er mars 2027, Mailgun rejettera les connexions SMTP qui utilisent TLS 1.0 ou 1.1. Si votre application envoie des emails \u00e0 Mailgun via SMTP, voici comment v\u00e9rifier votre version de TLS et la mettre \u00e0 jour avant que l&rsquo;envoi de vos messages ne soit interrompu.<\/p>\n","protected":false},"author":13,"featured_media":13407,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"blog_category":[22],"class_list":["post-26709","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-product"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Abandon de TLS par le SMTP de Mailgun\u00a0: passez \u00e0 TLS 1.2 d&#039;ici le 1er mars<\/title>\n<meta name=\"description\" content=\"Le SMTP de Mailgun n\u00e9cessitera TLS 1.2 ou une version sup\u00e9rieure \u00e0 partir du 1er mars 2027, d\u00e9couvrez comment v\u00e9rifier et mettre \u00e0 jour votre version de TLS.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.mailgun.com\/fr\/blog\/product\/smtp-mailgun-passe-tls-1-2-que-faire-avant-mise-a-jour-1-mars-2027\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Abandon de TLS par le SMTP de Mailgun\u00a0: passez \u00e0 TLS 1.2 d&#039;ici le 1er mars\" \/>\n<meta property=\"og:description\" content=\"Le SMTP de Mailgun n\u00e9cessitera TLS 1.2 ou une version sup\u00e9rieure \u00e0 partir du 1er mars 2027, d\u00e9couvrez comment v\u00e9rifier et mettre \u00e0 jour votre version de TLS.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.mailgun.com\/fr\/blog\/product\/smtp-mailgun-passe-tls-1-2-que-faire-avant-mise-a-jour-1-mars-2027\/\" \/>\n<meta property=\"og:site_name\" content=\"Transactional Email API Service For Developers | Mailgun\" \/>\n<meta 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