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Building verified history21 of 24 verified daily observations collected. A percentage will appear after the minimum coverage threshold is met.
90-Day Trend
Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.
Recorded Daily Status (Last 54 Days)
Jul 23Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data
Incident History
No source-attested incident records are available for the current collector history. Older legacy archive records remain available below.
Legacy Incident Archive
27 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
August 2026
Secure Messaging Login
minorSource not attested
Last archived state: investigating
View archived record details
AuthenticationUnited States GridUnited States B GridUnited Kingdom GridSouth African GridAustralian GridGerman GridCanadian GridOffshore Grid
investigating
We have implemented mitigation steps to address authentication issues for external Secure Messaging users. We are no longer seeing errors and services are operating normally across grids. Our Engineering team will continue to closely monitor availability and performance to ensure ongoing stability.
monitoring
We have implemented mitigation steps to address authentication issues for external Secure Messaging users. We are seeing improvements across grids and are continuing to test and apply mitigations to the authentication service. We will provide further updates as they become available.
monitoring
We are continuing to actively investigate login issues affecting some customers' external users with Secure Messaging. Our teams remain fully engaged in troubleshooting to identify the root cause, and we will post updates here as they become available.
monitoring
We are aware that some customers may be having their external users experience login issues with Secure Messaging. We are currently investigating and will post updates here as they become available.
Degraded Service – Administration Console Authentication issue
minorSource not attested
Last archived state: investigating
View archived record details
Administration ConsoleUnited States GridUnited States B GridUnited Kingdom GridSouth African GridAustralian GridGerman GridCanadian Grid
investigating
We have taken mitigation steps and believe we have resolved the issue causing login failures and disruption to Administration Console for some customers across multiple regions. Our Engineering team is closely monitoring the situation as services continue to stabilize and return to normal levels. We will provide further updates here.
monitoring
We have identified the cause of authentication issues affecting the Administration Console for some customers. Expect to see intermittent failures and high latency. Email flow and other services are not impacted. Our teams are actively working on a resolution, and further updates will be posted here as they become available.
monitoring
We have identified the cause of authentication issues affecting the Administration Console for some customers globally. Email flow and other services are not impacted. Our teams are actively working on a resolution, and further updates will be posted here as they become available.
Aware, Analysis and Response, Human Risk Command Center, Engage, and CyberGraph : Login/Access Issues (AU, CA)
We have implemented mitigation steps to address login and access issues for some customers hosted on our AU and CA grids, impacting Aware, Analysis and Response, Human Risk Command Center, Engage, and CyberGraph. We are no longer seeing errors and services are operating normally. Our Engineering team continues to closely monitor availability and performance to ensure ongoing stability.
monitoring
We have identified the cause of intermittent login and access issues affecting some customers hosted on our AU and CA grids, impacting Aware, Analysis and Response, Human Risk Command Center, Engage, and CyberGraph. Our teams are actively working on the resolution, and further updates will be posted here as they become available.
July 2026
Outbound delivery delays on AU grid
minorSource not attested
Last archived state: investigating
View archived record details
investigating
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.
monitoring
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
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.
Email Processing Delays: USB
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have implemented mitigation steps to address intermittent delivery delays for some customers hosted on our USB grid. Our processing queues are in a healthier state, and we are observing normal mail delivery operations.
Our Engineering teams will continue monitoring to ensure stability in our environment.
monitoring
We have implemented mitigation steps to address intermittent delivery delays for some customers hosted on our USB grid. Our teams are seeing improvements and are continuing to work toward full resolution.
We will provide further updates as they become available.
monitoring
We have identified the cause of the intermittent delivery delays affecting some customers hosted on our USB grid. Our teams are actively working on a resolution, and further updates will be posted here as they become available.
monitoring
We are aware that some customers hosted on our USB grid may be experiencing intermittent delivery delays. We are currently investigating and will post updates here as they become available.
Administration Console Page Loading Issue
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have taken mitigation steps and believe we have resolved the issue affecting some customers where attempting to load certain pages within the Mimecast Administration Console redirected users back to the Main Page.
Our Engineering team is closely monitoring the situation to ensure continued stability and performance. We will provide further updates here as they become available.
monitoring
Our Engineering teams are actively engaged implementing mitigation steps to resolve the issue affecting some customers, where attempting to load certain pages within the Mimecast Administration Console redirects back to the Main Page. We will continue to provide updates here as they become available.
monitoring
We continue to work on a resolution for the issue affecting some customers, where attempting to load certain pages within the Mimecast Administration Console redirects back to the Main Page. We will continue to provide updates here as they become available.
monitoring
We have identified the cause of the issue affecting the loading of certain pages within the Mimecast Administration Console. Our teams are working on implementing remediation to resolve the issue, and further updates will be posted here as they become available.
monitoring
We are aware that some customers may be experiencing an issue when attempting to load certain pages within the Mimecast Administration Console, resulting in a redirect back to the Main Page. We are currently investigating the issue and updates will be posted here as they become available.
Intermittent Processing Delays on AU Grid
minorSource not attested
Last archived state: investigating
View archived record details
investigating
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.
monitoring
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
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.
S&R Migration Failures
Source not attested
Last archived state: resolved
View archived record details
resolved
We are aware of a service disruption that is preventing customers from completing S&R migrations. We are currently investigating the issue and will post further updates here as they become available
Administration Console access issue- USB
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have implemented mitigation steps and believe we have resolved the intermittent issues affecting access to the Mimecast Administration Console for customers hosted on our USB grid. Our Engineering team is closely monitoring the situation to ensure a full resolution.
monitoring
We have identified the cause of the intermittent issues affecting customers hosted on our USB grids experiencing difficulty accessing the Mimecast Administration Console. Our Engineering team is actively working on implementing a fix and we will provide further updates as they become available.
monitoring
We are aware that some customers hosted on our USB grid may be experiencing intermittent issues accessing the Mimecast Administration Console. Our Engineering team is actively investigating the issue and we will provide further updates as they become available.
Degraded Outbound Email Processing on Multiple Grids
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have taken mitigation steps and believe we have solved the issue of our recent service disruption that impacted outbound email processing across all regions. The Engineering team will closely monitor as the error rates have returned to normal levels.
All services should now be functioning normally. We appreciate your patience while we worked to resolve this issue.
monitoring
We believe we have identified the issue affecting customers across multiple grids, where some outbound messages were delivered with a blank or "null" message body.
We have taken initial mitigation steps and are seeing error rate improvements in impacted regions. The Engineering team will continue the mitigation process while closely monitoring performance.
Customers may still experience intermittent issues while mitigation work continues. We will provide further updates here as they becom...
monitoring
We are aware of a service disruption impacting outbound email processing for some customers across multiple grids. Some outbound messages delivered to external recipients may contain a blank or "null" display in the body.
Our Engineering team is actively working to determine the root cause and scope of impact. Further updates will be posted here as they become available.
All other Mimecast services are operating as normal.
monitoring
We are aware of a service disruption impacting outbound email processing for some customers across multiple grids. Some outbound messages delivered to external recipients may contain a blank or incorrect message body.
Our Engineering team is actively investigating to mitigate the issue. Further updates will be posted here as they become available.
All other Mimecast services are operating as normal.
