backscatter
Help! I’m getting mail from MAILER-DAEMON@(various domains) with subject lines like: Delivery Status Notification (Failure), failure notice, Mail delivery failed: returning message to sender, Message Delivery Failure – Mail Delivery System, **Message you sent was blocked by our bulk email filter**, Recapito fallito, Returned mail: see transcript for details, Undelivered Mail Returned to Sender. These all seem to be bounces back from mail I didn’t send. What is happening and how do I make it stop?
Introducing NDR backscatter storm prevention January 28, 2022 Posted by: Terry Zink Category: Email Blogs , Industry News , Terry Zink , No Comments A few weeks ago, we rolled out NDR backscatter protection with Boomerang for hosted mailboxes in Office 365, and that change is going live this week for customers with on-premise mail servers. Next […]
Improving Backscatter detection with Boomerang November 22, 2014 Posted by: Terry Zink Category: Email Blogs , Industry News , Terry Zink , No Comments One of the features we have been working on in Office 365/Exchange Online Protection (EOP) is called Boomerang which is a mechanism to better detect backscatter spam. What is Backscatter? […]