Emails to Outlook.com rejected due to a fault or overzealous blocking rules
Microsoft's Outlook.com experienced significant email delivery issues, causing emails from certain IP addresses to be rejected due to reputation rules or block lists. Users described the situation as "carnage" due to the disruption in email flow.
theregister.com
3 min
3/4/2026
Emails to Outlook.com rejected due to a fault or overzealous blocking rules
Microsoft's Outlook.com experienced significant email delivery issues, causing emails from certain IP addresses to be rejected due to reputation rules or block lists. Users described the situation as "carnage" due to the disruption in email flow.
theregister.com
3 min
3/4/2026
Emails to Outlook.com rejected due to a fault or overzealous blocking rules
Microsoft's Outlook.com experienced significant email delivery issues, causing emails from certain IP addresses to be rejected due to reputation rules or block lists. Users described the situation as "carnage" due to the disruption in email flow.
theregister.com
3 min
3/4/2026
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