Mimecast Outage History

We have identified the cause of login issues when accessing the Mimecast Support Center, affecting some customers. Our teams are taking mitigating steps to address the issue and are working to deploy a fix. We will provide further updates as they become available. Please note that customers can continue to access the Mimecast Support Center by selecting Contact Support in the Administration Console, which is functioning as expected.

We are aware of an issue affecting login to the Mimecast services for some customers globally. Users may see an error after entering a valid username and may be unable to reach the password step. We have identified the cause, and our teams are actively working on a resolution. We apologize for the disruption and will post further updates here as they become available.

We are aware of an issue affecting login to the Mimecast services for some customers globally. Users may see an error after entering a valid username and may be unable to reach the password step. We have identified the cause, and our teams are actively working on a resolution. We apologize for the disruption and will post further updates here as they become available. As a workaround, please refer to below article to successfully login via respective regional URLs https://mimecastsupport.zendesk.com/hc/en-us/articles/34000362728979-Administration-Data-Centers-URLs#h_01JA7Q71GA0422N2D8BE4J0Z36

Our third-party SMS provider has reported an issue that may impact the successful delivery of SMS messages used for Two-Factor Authentication (2FA). The provider is actively working on a resolution, and we will provide updates as they become available.

We have identified the cause of the issue preventing calls from connecting on our South Africa (ZA) support line 086. Our teams are actively working towards a resolution, and we will share further updates here as they become available. In the meantime, customers can continue using the alternative number, (011) 722-3700.

We have identified the cause of the issue preventing calls from connecting on our South Africa (ZA) support line 086, and our teams are actively working towards a resolution. In the meantime, please use the alternative number, (011) 722-3700, until further notice. We expect to share our next update during normal ZA business hours.

We continue to work actively towards a resolution for the issue preventing calls from connecting on our South Africa (ZA) support line 086. We will share further updates here as soon as we have more information. In the meantime, please continue using the alternative number, (011) 722-3700, until further notice.

We have identified the cause of a service disruption affecting some customers hosted on our JER grid, which may be impacting authentication and mail flow. We continue to accept mail like normal but processing and delivery may be delayed. Our teams are actively working on a resolution, and further updates will be posted here as they become available.

We have identified the cause of authentication issues affecting the Administration Console and end user applications for some customers across multiple regions. 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.

We can confirm that the issue with Administration Console and End User apps has been resolved. However, a fix for the issue with POP3 is currently in development and will be deployed as soon as possible. Further updates will be posted here as they become available.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

We have identified the root cause of the issue preventing customers from completing Sync and Recover (S&R) migrations. Our engineering team is actively working on a resolution. We will post further updates here as they become available.

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.

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 become available.

Our third-party SMS provider has reported an issue that may impact the successful delivery of SMS messages used for Two-Factor Authentication (2FA). The provider is actively working on a resolution, and we will provide updates as they become available.

We have identified the cause of the intermittent issues affecting customers hosted on our UK, DE, and ZA 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.

We have identified the cause of the email delivery delays affecting customers in ZA. Engineering are working to resolve this. Further updates will be posted here as they become available.

We have identified the issue impacting email delivery to Office 365 tenants for a subset of US hosted customers and are working to resolve it. We will provide further updates as they become available.