Microsoft is now launching ‘Reply All Storm Protection’ to Exchange Online in order to resolve a problem that Microsoft is experiencing since the feature was first announced last November at Ignite 2019.
The Exchange Transport Team reveals in a post “When a Reply All mail storm happens in your organization, it can disrupt business continuity and in some cases even throttle the rest of your organization’s email for a period of time. The Reply All Storm Protection feature [will] help reduce the impact that Reply All storms can have on large organizations. Today we’re pleased to announce that the feature is now rolling out in Office 365 worldwide.” The team is referring to Office 365 commercial.
Here’s how the ‘Reply All Storm Protection’ works: When Exchange Online senses a potential Reply All storm taking place in a large distribution list (DL), it will immediately block subsequent Reply All attempts and will respond with a Non-Delivery Report (NDR) to the sender.
As posted, Microsoft will use telemetry and customer feedback to improve and fine-tune this newly introduced feature.