Users fume over Outlook.com email 'carnage'
Summary
The Register reports on Outlook.com email delivery problems where certain IPs were blocked due to reputation rules or block lists, causing 550 errors. The issue appeared to widen in February with many businesses unable to deliver invoices and notifications, while Microsoft provided limited responses and users struggled to diagnose whether the problem was on their end. The piece underscores the need for clear, rapid remediation and better handling of email delivery failures to protect business reputations.