Resolved after 10 hours 15 minutes, affecting Australian Grid and Offshore Grid (Offshore Grid — Email Processing), on July 27, 2026.
We have applied mitigation steps to resolve the issue causing outbound MX lookup errors for a subset of AU-hosted customers. Some outbound mail may still be delayed while the backlog clears. We're monitoring closely to confirm full recovery and will provide further updates as they become available.
Affected components
Update timeline
- investigating Jul 27, 2026, 06:03 AM UTC
We are aware that some customers on our AU grid may be experiencing outbound mail delivery delays due to MX lookup errors, with messages held in the delivery queue. We are investigating and will post updates here as they become available.
- identified Jul 27, 2026, 06:40 AM UTC
We have identified the issue causing outbound MX lookup errors for a subset of AU-hosted customers and are working on a resolution. We'll provide further updates as they become available.
- monitoring Jul 27, 2026, 07:28 AM UTC
We have applied mitigation steps to resolve the issue causing outbound MX lookup errors for a subset of AU-hosted customers. Some outbound mail may still be delayed while the backlog clears. We're monitoring closely to confirm full recovery and will provide further updates as they become available.
Your product runs on more than Mimecast
Add the vendors you depend on and get one message when any of them reports trouble. Free for 3 vendors, no card.