Resolved after 2 hours 19 minutes, affecting United States Grid and United Kingdom Grid and 1 more, on June 9, 2026.
We have resolved the email delivery issue affecting Office 365 tenants for US-hosted customers. Mitigation efforts are ongoing for UK and ZA hosted customers, and we will provide further updates as work continues.
Affected components
Update timeline
- investigating Jun 09, 2026, 01:45 AM UTC
We are aware of a service disruption that is impacting email delivery to Office 365 tenants for a subset of US hosted customers. We are investigating this issue and will post further updates here.
- identified Jun 09, 2026, 02:31 AM UTC
We have identified the issue impacting email delivery to Office 365 tenants for a subset of US hosted customers and are working to resolve it. We will provide further updates as they become available.
- monitoring Jun 09, 2026, 03:26 AM UTC
We have resolved the email delivery issue affecting Office 365 tenants for US-hosted customers. Mitigation efforts are ongoing for UK and ZA hosted customers, and we will provide further updates as work continues.
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