{"id":12462,"date":"2025-08-06T02:00:51","date_gmt":"2025-08-05T17:00:51","guid":{"rendered":"https:\/\/m365jp.net\/?p=12462"},"modified":"2025-08-06T02:05:08","modified_gmt":"2025-08-05T17:05:08","slug":"mc1117814-updated-microsoft-viva-engage-email-sender-domain-migration-from-yammer-com-to-engage-mail-microsoft-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-08-06-mc1117814-updated-microsoft-viva-engage-email-sender-domain-migration-from-yammer-com-to-engage-mail-microsoft-2","title":{"rendered":"MC1117814 | (Updated) Microsoft Viva Engage | Email sender domain migration from @yammer.com to @engage.mail.microsoft"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1117814 | (Updated) Microsoft Viva Engage | Email sender domain migration from @yammer.com to @engage.mail.microsoft<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>planForChange<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>08\/05\/2025 16:39:39<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>07\/18\/2025 23:38:18<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>11\/30\/2025 08:00:00<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<p>Updated August 5, 2025: We have updated the content. Thank you for your patience.<\/p>\n<p><b>Introduction<\/b><\/p>\n<p>As part of the final phase of the Viva Engage rebranding, we\u2019re updating the email sender domains used for Viva Engage communications. This change ensures a consistent and secure brand experience across all surfaces and completes the transition from Yammer   to Viva Engage.<\/p>\n<p>This update was previously communicated in MC679739, \u201cYammer Rebranding to Viva Engage Domain Migration Update,\u201d in October 2023.<\/p>\n<p><b>When this will happen<\/b><\/p>\n<ul>\n<li>The email sender domain rollout will begin in late August 2025 for U.S. and EU tenants currently receiving messages from @yammer.com and @eu.yammer.com respectively. The entire rollout is expected to complete by the end of October 2025.  <\/li>\n<li>A fallback\/coexistence period will be in place between August and the end of October, during which both the old and new domains will be supported. During this time, some users within a tenant may receive emails from the old domain while others receive them   from the new domain.<\/li>\n<\/ul>\n<p><b>How this will affect your organization<\/b><\/p>\n<p>The sender domain for Viva Engage emails will change as follows:  <\/p>\n<ul>\n<li>From @yammer.com to @engage.mail.microsoft for U.S. and global regions.  <\/li>\n<li>From @eu.yammer.com to @eu.engage.mail.microsoft for European regions.  <\/li>\n<\/ul>\n<p>These new domains are secured with industry-standard authentication protocols (e.g., SPF) to help prevent spoofing and ensure reliable delivery.  <\/p>\n<p>To enhance security and reduce cross-tenant spam, sender addresses will now include a tenant-specific prefix. You may see emails from:  <\/p>\n<ul>\n<li><a href=\"mailto:noreply_tenant@engage.mail.microsoft\" >noreply_tenant@engage.mail.microsoft<\/a> (digests and delegate notifications)  <\/li>\n<li><a href=\"mailto:notifications_tenant@engage.mail.microsoft\" >notifications_tenant@engage.mail.microsoft<\/a> (community, storyline, and activity notifications)  <\/li>\n<li><a href=\"mailto:announcements_tenant@engage.mail.microsoft\" >announcements_tenant@engage.mail.microsoft<\/a> (leadership announcements)  <\/li>\n<\/ul>\n<p>These changes apply to all Viva Engage tenants, regardless of license tier (e.g., Viva P1, P2), and affect all Viva Engage emails, including notifications, announcements, and digests.<\/p>\n<p>Third-party integrations (e.g., journaling, archiving, or routing systems) that rely on the @yammer.com domain for classification or authentication may be impacted. Any such configurations should be reviewed and updated to recognize the new domains.<\/p>\n<p><i>An example of a new Viva Engage email notification sent from the updated @engage.mail.microsoft domain:<\/i><\/p>\n<p><i>&nbsp;<\/i><img decoding=\"async\" style=\"width: 400px;\" alt=\"user settings\" src=\"https:\/\/cxcs.microsoft.net\/static\/public\/messagecenter\/neutral\/55498900-45c4-4375-be35-b989948d2946\/c7973dd8d9bde265ced10161ed090ee81bad55cb.png\"><\/p>\n<p><b>What you need to do to prepare<\/b><\/p>\n<p>Admins should review and update the following configurations:  <\/p>\n<ul>\n<li>Transport rules and email gateways: Update any rules that reference @yammer.com to include the new domains.  <\/li>\n<li>Exchange filtering: Ensure filtering rules remain effective with the new sender domains.  <\/li>\n<li>Outlook rules: Inform users that any rules based on @yammer.com will no longer apply. Users can manually update or remove these rules.  <\/li>\n<\/ul>\n<p>No admin action is required unless your organization has custom configurations based on the old domain.<\/p>\n<p>Learn more:&nbsp;<a href=\"https:\/\/techcommunity.microsoft.com\/blog\/viva_engage_blog\/yammer-is-evolving-to-viva-engage\/3738825\" target=\"_blank\">Yammer is evolving to Viva Engage | Viva Engage Blog<\/a><\/p>\n<p><b>Compliance considerations<\/b><\/p>\n<p>No compliance considerations identified, review as appropriate for your organization.<\/p>\n<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MC1117814 | (Updated) Microsoft Viva Engage | Email sender domain migration from @yammer.com to @engage.mail.m [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-12462","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/12462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=12462"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/12462\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=12462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=12462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=12462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}