Outage in Hornetsecurity
[HSE20260225-01] Issue: Delivery Issues to Microsoft Email Domains
Resolved Minor
February 25, 2026 - Started about 2 months ago
- Lasted about 21 hours
Incident Report
Summary AI Generated
Hornetsecurity experienced delivery issues with outbound emails to Microsoft email domains including Hotmail.com, Outlook.com, and Live.com recipients. The Email Outbound service was affected for 20.6 hours while the company investigated reports of unsuccessful email deliveries. The incident was classified as minor and involved isolated delivery failures to Microsoft-hosted email addresses.
We are investigating single reports of outbound Emails involving Hotmail.com, Outlook.com, and Live.com recipients to be unsuccessful.
Components affected
Hornetsecurity Email OutboundTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
about 2 months ago - at 02/25/2026 11:40AM
We are investigating single reports of outbound Emails involving Hotmail.com, Outlook.com, and Live.com recipients to be unsuccessful.
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