{"id":1348,"date":"2022-02-04T22:46:12","date_gmt":"2022-02-04T22:46:12","guid":{"rendered":"https:\/\/regroove.ca\/stellark\/?p=1348"},"modified":"2023-02-24T16:45:36","modified_gmt":"2023-02-24T16:45:36","slug":"office-365-smtp-relay-stopped-working","status":"publish","type":"post","link":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/","title":{"rendered":"Office 365 SMTP Relay Stopped Working!"},"content":{"rendered":"\n<p>In October 2020 support for TLS 1.0 and 1.1 in Exchange Online ended, however, Microsoft allowed clients to keep using the SMTP AUTH endpoint (smtp.office365.com).  But now that its a brand new year Microsoft&#8217;s plan is to disable that usage in order to meet security and compliance requirements. <\/p>\n\n\n\n<p>So what will this look like if your device only supports TLS 1.0 or 1.1 and can no longer access smtp.office365.com?  <\/p>\n\n\n\n<p>Well whatever service relies on mail being sent to Office 365 will fail. <strong> For example;<\/strong> if you have a service that is supposed to deliver Voice Mails to Outlook those voicemails will not reach outlook because the &#8220;service account&#8221; you have configured for authentication is being prevented from using smtp.office365.com.<\/p>\n\n\n\n<p>But wait, customers that have SMTP AUTH clients that only support older TLS versions can use a &#8220;legacy&#8221; endpoint provided by Microsoft.  Your organization will need to &#8220;opt into&#8221; this using PowerShell and your SMTP AUTH clients will need to start using <strong>smtp-legacy.office365.com<\/strong> going forward.<\/p>\n\n\n\n<p>Full <a href=\"https:\/\/docs.microsoft.com\/en-us\/exchange\/clients-and-mobile-in-exchange-online\/opt-in-exchange-online-endpoint-for-legacy-tls-using-smtp-auth\" target=\"_blank\" rel=\"noreferrer noopener\">article<\/a> from Microsoft explaining how to accomplish this.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Opt in to using legacy endpoint<\/h2>\n\n\n\n<p>This requires that you connect to Exchange Online Powershell <\/p>\n\n\n\n<pre class=\"wp-block-preformatted has-white-color has-luminous-vivid-orange-background-color has-text-color has-background has-medium-font-size\">Set-TransportConfig -AllowLegacyTLSClients $true<\/pre>\n\n\n\n<p>Once the above configuration has been set you will then need to configure your SMTP AUTH client to use <strong>smtp-legacy.office365.com<\/strong>. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>In October 2020 support for TLS 1.0 and 1.1 in Exchange Online ended, however, Microsoft allowed clients to keep using the SMTP AUTH endpoint (smtp.office365.com). But now that its a brand new year Microsoft&#8217;s plan is to disable that usage in order to meet security and compliance requirements. So what will this look like if &hellip; <a href=\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/\"><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[173,306,305,303,304],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Office 365 SMTP Relay Stopped Working! - Stephanie Kahlam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Office 365 SMTP Relay Stopped Working! - Stephanie Kahlam\" \/>\n<meta property=\"og:description\" content=\"In October 2020 support for TLS 1.0 and 1.1 in Exchange Online ended, however, Microsoft allowed clients to keep using the SMTP AUTH endpoint (smtp.office365.com). But now that its a brand new year Microsoft&#8217;s plan is to disable that usage in order to meet security and compliance requirements. So what will this look like if &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/\" \/>\n<meta property=\"og:site_name\" content=\"Stephanie Kahlam\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-04T22:46:12+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-24T16:45:36+00:00\" \/>\n<meta name=\"author\" content=\"Stephanie Kahlam\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Stephanie Kahlam\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/\",\"url\":\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/\",\"name\":\"Office 365 SMTP Relay Stopped Working! - Stephanie Kahlam\",\"isPartOf\":{\"@id\":\"https:\/\/regroove.ca\/stellark\/#website\"},\"datePublished\":\"2022-02-04T22:46:12+00:00\",\"dateModified\":\"2023-02-24T16:45:36+00:00\",\"author\":{\"@id\":\"https:\/\/regroove.ca\/stellark\/#\/schema\/person\/175e89cb69612178b2ac838c0bab6149\"},\"breadcrumb\":{\"@id\":\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Stellark Home\",\"item\":\"https:\/\/regroove.ca\/stellark\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Office 365 SMTP Relay Stopped Working!\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/regroove.ca\/stellark\/#website\",\"url\":\"https:\/\/regroove.ca\/stellark\/\",\"name\":\"Stephanie Kahlam\",\"description\":\"Microsoft 365 and SMB.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/regroove.ca\/stellark\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/regroove.ca\/stellark\/#\/schema\/person\/175e89cb69612178b2ac838c0bab6149\",\"name\":\"Stephanie Kahlam\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/regroove.ca\/stellark\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/398b95e23dc9eaf37a780b86a239b485?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/398b95e23dc9eaf37a780b86a239b485?s=96&d=mm&r=g\",\"caption\":\"Stephanie Kahlam\"},\"url\":\"https:\/\/regroove.ca\/stellark\/author\/skahlam\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Office 365 SMTP Relay Stopped Working! - Stephanie Kahlam","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/","og_locale":"en_US","og_type":"article","og_title":"Office 365 SMTP Relay Stopped Working! - Stephanie Kahlam","og_description":"In October 2020 support for TLS 1.0 and 1.1 in Exchange Online ended, however, Microsoft allowed clients to keep using the SMTP AUTH endpoint (smtp.office365.com). But now that its a brand new year Microsoft&#8217;s plan is to disable that usage in order to meet security and compliance requirements. So what will this look like if &hellip;","og_url":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/","og_site_name":"Stephanie Kahlam","article_published_time":"2022-02-04T22:46:12+00:00","article_modified_time":"2023-02-24T16:45:36+00:00","author":"Stephanie Kahlam","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Stephanie Kahlam","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/","url":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/","name":"Office 365 SMTP Relay Stopped Working! - Stephanie Kahlam","isPartOf":{"@id":"https:\/\/regroove.ca\/stellark\/#website"},"datePublished":"2022-02-04T22:46:12+00:00","dateModified":"2023-02-24T16:45:36+00:00","author":{"@id":"https:\/\/regroove.ca\/stellark\/#\/schema\/person\/175e89cb69612178b2ac838c0bab6149"},"breadcrumb":{"@id":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/regroove.ca\/stellark\/2022\/02\/04\/office-365-smtp-relay-stopped-working\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Stellark Home","item":"https:\/\/regroove.ca\/stellark\/"},{"@type":"ListItem","position":2,"name":"Office 365 SMTP Relay Stopped Working!"}]},{"@type":"WebSite","@id":"https:\/\/regroove.ca\/stellark\/#website","url":"https:\/\/regroove.ca\/stellark\/","name":"Stephanie Kahlam","description":"Microsoft 365 and SMB.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/regroove.ca\/stellark\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/regroove.ca\/stellark\/#\/schema\/person\/175e89cb69612178b2ac838c0bab6149","name":"Stephanie Kahlam","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/regroove.ca\/stellark\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/398b95e23dc9eaf37a780b86a239b485?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/398b95e23dc9eaf37a780b86a239b485?s=96&d=mm&r=g","caption":"Stephanie Kahlam"},"url":"https:\/\/regroove.ca\/stellark\/author\/skahlam\/"}]}},"_links":{"self":[{"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/posts\/1348"}],"collection":[{"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/comments?post=1348"}],"version-history":[{"count":1,"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/posts\/1348\/revisions"}],"predecessor-version":[{"id":1349,"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/posts\/1348\/revisions\/1349"}],"wp:attachment":[{"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/media?parent=1348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/categories?post=1348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/regroove.ca\/stellark\/wp-json\/wp\/v2\/tags?post=1348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}