Exclaimer incident

Issues processing messages within the UK region

Minor Resolved View vendor source →

Exclaimer experienced a minor incident on July 1, 2026 affecting UK: Server-Side: Mail Routing - Office 365, lasting 3h 56m. The incident has been resolved; the full update timeline is below.

Started
Jul 01, 2026, 11:45 AM UTC
Resolved
Jul 01, 2026, 03:41 PM UTC
Duration
3h 56m
Detected by Pingoru
Jul 01, 2026, 11:45 AM UTC

Affected components

UK: Server-Side: Mail Routing - Office 365

Update timeline

  1. 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

  2. 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.

  3. resolved Jul 01, 2026, 03:41 PM UTC

    The issue is now resolved and the all mail flow processing is operational