{"id":22877,"date":"2020-09-21T00:00:00","date_gmt":"2020-09-21T00:00:00","guid":{"rendered":"https:\/\/www.mailgun.com\/blog\/obsolescence-des-versions-1-0-et-1-1-de-tls\/"},"modified":"2026-09-16T06:15:23","modified_gmt":"2026-09-16T06:15:23","slug":"obsolescence-des-versions-1-0-et-1-1-de-tls","status":"publish","type":"blog","link":"https:\/\/www.mailgun.com\/fr\/blog\/product\/obsolescence-des-versions-1-0-et-1-1-de-tls\/","title":{"rendered":"Obsolescence des versions 1.0 et 1.1 de TLS"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Since Mailgun\u2019s early days, we\u2019ve made a point to ensure that our senders could send their emails as securely as possible. When we\u00a0<a href=\"https:\/\/www.mailgun.com\/fr\/blog\/tls-connection-control\" target=\"_tabs\" rel=\"noopener noreferrer\"><u>announced TLS support in 2014<\/u><\/a>, we did this with the customer in mind, and we continue to do so now as we move to deprecate TLS 1.0 and 1.1 in favor of the more secure TLS version 1.2.\u00a0<\/p>\n\n<p class=\"wp-block-paragraph\">That said, it\u2019s important to note that\u00a0<b>on March 8, 2021<\/b>, Mailgun will no longer allow TLS connections using the outdated 1.0 and 1.1 versions.<\/p>\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-7614\"><p class=\"h5 m-0\" id=\"toc-title-7614\">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=\"#why-deprecate-tls-1-0-and-1-1\">Why deprecate TLS 1.0 and 1.1?<\/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=\"#how-to-check-if-your-environment-supports-tls-1-2\">How to check if your environment supports TLS 1.2<\/a><a class=\"scrollme link-body-color\" href=\"#linux\">Linux<\/a><a class=\"scrollme link-body-color\" href=\"#windows\">Windows<\/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=\"#mailguns-test-endpoint\">Mailgun&rsquo;s test endpoint<\/a><\/div><\/div><\/nav>\n<h2 class=\"wp-block-heading\">Why deprecate TLS 1.0 and 1.1?<\/h2>\n\n<p class=\"wp-block-paragraph\">The older TLS versions are riddled with security vulnerabilities. As such, these protocols are updated over time to patch out these vulnerabilities and keep users safe. TLS 1.0 came out in 1999 and has had many issues with heartbleed, POODLE, CRIME, etc. That said, it\u2019s been a long time coming for companies to drop their support of 1.0 and 1.1.<\/p>\n\n<p class=\"wp-block-paragraph\">When it comes to TLS deprecation, many other tech companies have chosen to sunset these old protocols as well. In March 2020, all four major internet browser providers ended their support of TLS 1.0 and 1.1 \u2013 which was a major push in the right direction for better security. While Mailgun isn\u2019t the first or the last company to announce their TLS 1.0 and 1.1 support deprecation, <b>now is the perfect time to check and make sure your environment supports 1.2<\/b> so you don\u2019t experience any downtime.<\/p>\n\n<p class=\"wp-block-paragraph\">If you\u2019re already utilizing TLS 1.2 \u2013 great! Doing these sorts of maintenance updates is imperative, so getting ahead saves you some time in the future. If you aren\u2019t sure if your environment supports TLS 1.2, now is an excellent time to double-check.\u00a0<\/p>\n\n<p class=\"wp-block-paragraph\">It\u2019s a simple process, but we\u2019ve gone ahead and listed how you can check your TLS version with Mailgun below.<\/p>\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_d63e186a54f8c409bd68a345c1d3dc29\">\r\n                    <p class=\"text-uppercase section-caption text-body-color\">\r\n                Learn about our Deliverability Services            <\/p>\r\n                            <p class=\"h4 text-accent fw-bold\" id=\"banner-block-block_d63e186a54f8c409bd68a345c1d3dc29\">\r\n                Deliverability Services            <\/p>\r\n                            <div class=\"mb-0 text-body-color\">\r\n                                    <div class=\"content-body mb-0 text-body-color\">Looking to send a high volume of emails? Our email experts can supercharge your email performance. See how we&#x27;ve helped companies like Lyft, Shopify, Github increase their email delivery rates to an average of 97%.<\/div>\r\n                            <\/div>\r\n        \r\n        <div class=\"text-start mt-5\"><a href=\"https:\/\/www.mailgun.com\/fr\/solutions\/services-delivrabilite-lp\/\"  class=\"btn btn-secondary\" >Learn more<\/a><\/div>\r\n    <\/aside>\r\n\r\n\n<h2 class=\"wp-block-heading\">How to check if your environment supports TLS 1.2<\/h2>\n\n<p class=\"wp-block-paragraph\">The steps to check your environment\u2019s TLS 1.2 support are pretty straightforward. We\u2019ve listed the details on how to check via Linux and Windows systems below. If it does support 1.2, there are no further steps to follow as we\u2019ll default to that version.\u00a0 Should your environment\u00a0<b>not support\u00a0<\/b>TLS 1.2, you have some extra work ahead of you.<\/p>\n\n<h3 class=\"wp-block-heading\">Linux<\/h3>\n\n<p class=\"wp-block-paragraph\">If you\u2019re running your sending application on a Linux server, you can use the nmap utility to check which versions of TLS your stack supports. On your local machine, run the following command, replacing<i>\u00a0\u2018api.mailgun.net\u2019<\/i>\u00a0with your own domain:<\/p>\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=\"#code_0\" type=\"button\" role=\"tab\" aria-controls=\"code_0\" aria-selected=\"true\">\r\n                                PHP                            <\/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=\"code_0\" role=\"tabpanel\" aria-labelledby=\"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=\"#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-PHP\">\r\n                                <code id=\"code_0_content\" class=\"language-PHP\">\r\n\r\n                                    nmap --script ssl-enum-ciphers -p 443 api.mailgun.net\r\n                                <\/code>\r\n                            <\/pre>\r\n                        <\/div>\r\n                    <\/div>\r\n                                    <\/div>\r\n    <\/div>\r\n\n<p class=\"wp-block-paragraph\">Here\u2019s an example output for api.mailgun.net:<\/p>\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=\"#code_0\" type=\"button\" role=\"tab\" aria-controls=\"code_0\" aria-selected=\"true\">\r\n                                PHP                            <\/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=\"code_0\" role=\"tabpanel\" aria-labelledby=\"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=\"#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-PHP\">\r\n                                <code id=\"code_0_content\" class=\"language-PHP\">\r\n\r\n                                    Starting Nmap 7.70 ( https:\/\/nmap.org ) at 2020-09-11 13:39 CDT\r\nNmap scan report for api.mailgun.net (3.220.71.10)\r\nHost is up (0.047s latency).\r\nOther addresses for api.mailgun.net (not scanned): 34.198.11.146 3.93.126.5 52.87.122.201 52.7.64.51 3.226.21.161 52.7.38.97 34.199.221.7\r\nrDNS record for 3.220.71.10: ec2-3-220-71-10.compute-1.amazonaws.com\r\n\r\nPORT\u00a0 \u00a0 STATE SERVICE\r\n443\/tcp open\u00a0 https\r\n| ssl-enum-ciphers:\r\n| \u00a0 TLSv1.0:\r\n| \u00a0 \u00a0 ciphers:\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A\r\n| \u00a0 \u00a0 compressors:\r\n| \u00a0 \u00a0 \u00a0 NULL\r\n| \u00a0 \u00a0 cipher preference: server\r\n| \u00a0 TLSv1.1:\r\n| \u00a0 \u00a0 ciphers:\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A\r\n| \u00a0 \u00a0 compressors:\r\n| \u00a0 \u00a0 \u00a0 NULL\r\n| \u00a0 \u00a0 cipher preference: server\r\n| \u00a0 TLSv1.2:\r\n| \u00a0 \u00a0 ciphers:\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (secp256r1) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_128_GCM_SHA256 (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_128_CBC_SHA256 (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_256_GCM_SHA384 (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_256_CBC_SHA256 (rsa 2048) - A\r\n| \u00a0 \u00a0 \u00a0 TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A\r\n| \u00a0 \u00a0 compressors:\r\n| \u00a0 \u00a0 \u00a0 NULL\r\n| \u00a0 \u00a0 cipher preference: server\r\n|_\u00a0 least strength: A\r\n\r\n                                <\/code>\r\n                            <\/pre>\r\n                        <\/div>\r\n                    <\/div>\r\n                                    <\/div>\r\n    <\/div>\r\n\n<p class=\"wp-block-paragraph\">As you can see in the output above, api.mailgun.net supports TLSv1.2, so I\u2019m good to go. As long as you get a similar output showing TLSv1.2, then so are you!<\/p>\n\n<p class=\"wp-block-paragraph\">If you don&rsquo;t see the above output, then you\u2019ll want to start by\u00a0<b>updating Apache\/Nginx and OpenSSL and\/or updating your nginx.conf or Apache configuration files<\/b>\u00a0to enable TLSv1.2.<\/p>\n\n<h3 class=\"wp-block-heading\">Windows<\/h3>\n\n<p class=\"wp-block-paragraph\">For you .NET users, first off, you\u2019ll want to ensure your server supports TLS 1.2.\u00a0\u00a0<b>If you\u2019re running Server 2008 or 2012, TLS 1.2 support was not available by default, so you\u2019ll want to make sure you have the relevant\u00a0<\/b><a href=\"https:\/\/support.microsoft.com\/en-us\/help\/3140245\/update-to-enable-tls-1-1-and-tls-1-2-as-default-secure-protocols-in-wi\" target=\"_tabs\" rel=\"noopener noreferrer\"><b><u>updates\u00a0<\/u><\/b><\/a><b>installed in order to support TLS 1.2.<\/b>\u00a0If you\u2019re running Server 2012 R2 or 2016, TLS 1.2 should already be installed and default.\u00a0<\/p>\n\n<p class=\"wp-block-paragraph\">Next, we highly recommend updating all of your applications to use the .NET 4.6 or higher framework, as these support TLS 1.2 and are set by default. If not, you may be able to use the following workarounds for older versions of .NET:<\/p>\n\n<ol class=\"wp-block-list\">\n<li><b>.NET 4.5.<\/b>\u00a0TLS 1.2 is supported, but it\u2019s not a default protocol. Using the following code will make TLS 1.2 default. You\u2019ll need to execute this code before making a connection to any secured resource:<\/li>\n<\/ol>\n\n<p class=\"wp-block-paragraph\"><i>System.Net.ServicePointManager.SecurityProtocol |= SecurityProtocolType.Tls12;<\/i><\/p>\n\n<p class=\"wp-block-paragraph\">2.<b>\u00a0.NET 4.0.<\/b>\u00a0TLS 1.2 is not supported, but if you have .NET 4.5 (or higher) installed on the same system then you still can opt in for TLS 1.2. Since the SecurityProtocolType in .NET 4.0 doesn\u2019t have an entry for TLS1.2, you\u2019ll have to use a numerical representation of this enum value:<\/p>\n\n<p class=\"wp-block-paragraph\"><i>ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;<\/i><\/p>\n\n<p class=\"wp-block-paragraph\">Or use the following\u00a0<a href=\"https:\/\/stackoverflow.com\/questions\/4137106\/are-there-net-implementation-of-tls-1-2\/32892997#32892997\" target=\"_tabs\" rel=\"noopener noreferrer\"><u>registry hack<\/u><\/a>.<\/p>\n\n<p class=\"wp-block-paragraph\">3.<b>\u00a0.NET 3.5 or below.<\/b>\u00a0Ensure you have the\u00a0<a href=\"https:\/\/support.microsoft.com\/en-us\/help\/3154519\/support-for-tls-system-default-versions-included-in-the-net-framework\" target=\"_tabs\" rel=\"noopener noreferrer\"><u>following updates<\/u><\/a>, as well as the registry keys.<\/p>\n\n<h2 class=\"wp-block-heading\">Mailgun&rsquo;s test endpoint<\/h2>\n\n<p class=\"wp-block-paragraph\">In addition, we have recently added a test API endpoint that will only accept requests using TLS version 1.2 (<a href=\"https:\/\/api-test.mailgun.net\/v3\" target=\"_tabs\" rel=\"noopener noreferrer\">https:\/\/api-test.mailgun.net\/v3<\/a>) to allow our customers to test their configuration. If you&rsquo;ve made updates and want to confirm that you are successfully connecting using the correct protocol, making\u00a0an API\u00a0call\u00a0to\u00a0this\u00a0endpoint\u00a0will confirm\u00a0your\u00a0update.\u00a0Otherwise,\u00a0calls to this endpoint will fail if an older protocol is still being used by your application.<\/p>\n\n<p class=\"wp-block-paragraph\">Please be aware: <b>this endpoint is only configured for test purposes, will not support full normal sending loads, and is not region-specific<\/b>. Once you&rsquo;ve completed testing, you&rsquo;ll need to update your configuration to the previous endpoint you were utilizing.<\/p>\n\n<p class=\"wp-block-paragraph\">As we make these changes and migrations to newer versions in the future, remember that we always have you in mind. With blog posts and email reminders, we aim to make sure no customer gets caught by surprise.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Depuis les d\u00e9buts de Mailgun, nous mettons un point d&rsquo;honneur \u00e0 ce que nos exp\u00e9diteurs puissent envoyer leurs emails de la mani\u00e8re la plus s\u00e9curis\u00e9e possible, et nous continuons \u00e0 le faire aujourd&rsquo;hui en pr\u00e9voyant l&rsquo;obsolescence des versions 1.0 et 1.1 de TLS au profit de la version 1.2 de TLS, qui est plus s\u00e9curis\u00e9e.\u00a0En savoir plus&#8230;<\/p>\n","protected":false},"author":29,"featured_media":4555,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"blog_category":[22],"class_list":["post-22877","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>Obsolescence des versions 1.0 et 1.1 de TLS - 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