Outage in Mimecast

Degraded Service on US Grid

Resolved Minor
September 19, 2025 - Started 27 days ago - Lasted 1 day

Incident Report


We are aware that some customers housed on our US grid may be experiencing intermittent timeouts and 403 errors when clicking on rewritten URLs in emails. Our engineering teams have identified potential causes and are working to resolve the issue as a priority. Further updates will be provided as soon as more information becomes available.
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Latest Updates ( sorted recent to last )
27 days ago - at 09/19/2025 09:50PM


We are aware that some customers housed on our US grid may be experiencing intermittent timeouts and 403 errors when clicking on rewritten URLs in emails. Our engineering teams have identified potential causes and are working to resolve the issue as a priority. Further updates will be provided as soon as more information becomes available.

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