Mimecast experienced a minor incident on July 23, 2026 affecting Australian Grid and Offshore Grid (Email Processing), lasting 5h 49m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Jul 23, 2026, 05:39 AM UTC
We are aware that some customers hosted on our AU grid may be experiencing intermittent delivery delays, with messages being held in the processing queue. We are currently investigating and will post updates here as they become available.
- identified Jul 23, 2026, 06:33 AM UTC
We have taken mitigation steps and continue to see improved mail processing performance for previously impacted customers hosted on our AU grid. We are continuing our resolution and further updates will be posted here.
- monitoring Jul 23, 2026, 07:09 AM UTC
Recovery is ongoing for the incident affecting some customers on our AU grid and we continue to see improvements. There may still be some delays in mail flow as the backlog clears. We are closely monitoring performance and will provide further updates as they become available.