Outage in Mimecast
Outbound delivery delays on AU grid
Resolved Minor
July 27, 2026 - Started 10 days ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
Mimecast's Australian Grid experienced outbound email delivery delays for approximately 1.4 hours due to MX lookup errors, causing messages to be held in the delivery queue for a subset of AU-hosted customers. The issue was identified and a resolution was worked on, with updates provided throughout. Outbound mail delivery was restored following the investigation.
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.
Components affected
Mimecast Australian GridTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
10 days ago - at 07/27/2026 06:03AM
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.
10 days ago - at 07/27/2026 06:40AM
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.
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