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Outage in Mimecast

Intermittent delivery delays on AU grid when sending to O365

Resolved Minor
May 22, 2025 - Started 8 months ago - Lasted about 1 hour

Incident Report

We are aware that a small subset of customers hosted on our AU grid may be experiencing delivery delays when sending to Office 365. We are currently investigating the issue and updates will be posted here as they become available.
Components affected
Mimecast Australian Grid

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Latest Updates ( sorted recent to last )
8 months ago - at 05/23/2025 12:59AM

We are aware that a small subset of customers hosted on our AU grid may be experiencing delivery delays when sending to Office 365. We are currently investigating the issue and updates will be posted here as they become available.

8 months ago - at 05/23/2025 01:41AM


We have identified the cause of delivery delays that are impacting a small subset of customers hosted on our AU grid. Engineering teams are currently working to resolve the issue and further updates will be posted in due course

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