Resolved after 3 hours 56 minutes, affecting UK: Server-Side: Mail Routing - Office 365, on July 1, 2026.
Exclaimer engineers have applied a fix to address the issue, ensuring no further messages will be affected. Any messages that were impacted would have been deferred for delivery and would be sent rather than failing to be delivered entirely. We will continue to monitor and provide further updates in the next hour.
Affected components
Update timeline
- identified Jul 01, 2026, 11:45 AM UTC
Exclaimer engineers are aware of an issue where messages within the UK may be impacted and fail to be delivered at this time. The team is actively working to address the issue
- monitoring Jul 01, 2026, 12:10 PM UTC
Exclaimer engineers have applied a fix to address the issue, ensuring no further messages will be affected. Any messages that were impacted would have been deferred for delivery and would be sent rather than failing to be delivered entirely. We will continue to monitor and provide further updates in the next hour.
- resolved Jul 01, 2026, 03:41 PM UTC
The issue is now resolved and the all mail flow processing is operational
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