The Reply-all Storm Protection feature in Exchange Online helps protect your organization from unwanted and disruptive reply-all storms. Last year we updated the feature to give admins the ability to...
Updated Apr 23, 2022
Version 2.0
Blog Post
tonire please check the message center https://admin.microsoft.com/AdminPortal/home?ref=MessageCenter/:/messages/MC289686 .
Or check the direct website: https://techcommunity.microsoft.com/t5/exchange-team-blog/sender-rewriting-scheme-upcoming-changes/ba-p/2632829