Mimecast Outage History

Mimecast experienced a service disruption affecting Partner Portal access for some customers, preventing login attempts and causing portal access errors. The issue impacted the Points of Contact component and lasted 2.9 hours. The incident was investigated and resolved, though specific resolution details were not provided in the final update.

Mimecast customers on the German (DE) grid experienced degraded email processing service for 16 minutes. The incident affected the German Grid infrastructure, causing delays or issues with email handling for users in that region. The service disruption was resolved after investigation and remediation efforts.

Mimecast experienced a 44-minute service degradation affecting SAML authentication for customers on the US, US-B, and UK grids, preventing users from logging into the Administration Console and associated applications while other authentication methods remained functional. The engineering team identified and tested a fix for what appeared to be a configuration issue causing the SAML login failures.

Mimecast customers on the US and USB grids experienced issues accessing rewritten links that were being redirected through Browser Isolation, resulting in errors when trying to access URLs. The incident affected the United States Grid and United States B Grid components while other Mimecast services continued operating normally. The issue was resolved after 1.1 hours.

Customers on Mimecast's South African grid experienced intermittent issues accessing the Administration Console for 1.1 hours. The engineering team investigated and resolved the connectivity problems affecting the ZA grid infrastructure.

Mimecast's German (DE) grid experienced degraded service affecting Cybergraph and other services for approximately 10.8 hours. The issue was identified and mitigation steps were implemented to resolve the service degradation. The incident was classified as minor and service was restored with ongoing monitoring.

Mimecast's Aware 1.0 platform experienced performance issues for 8.1 hours, causing delays and retries for some customers due to an underlying Azure platform disruption in the East US region. Mimecast's engineering teams worked with Microsoft to implement mitigation actions, which improved performance though some intermittent delays continued while the environment stabilized. The incident was resolved through Microsoft's platform fixes and ongoing monitoring by Mimecast's engineering team.

Mimecast customers on the Australian Grid experienced intermittent issues accessing the Administration Console for 1.7 hours. The engineering team investigated and resolved the loading problems that prevented administrators from accessing the console interface.

Mimecast's German (DE) grid experienced degraded performance for 1.3 hours, affecting email processing and access to the administration console for customers hosted in that region. The service team identified the root cause of the degradation and worked to resolve the issue. The incident was classified as minor severity and has since been resolved.

Mimecast experienced a 2.3-hour service incident where customers using two-factor authentication (2FA) were unable to log into the administration console across all global grids including the US, UK, Australia, Canada, Germany, and South Africa. The issue was identified as a problem with the 2FA authentication system, and Mimecast implemented mitigation steps that restored login functionality for affected customers.