Exclaimer Outage History

Exclaimer Cloud experienced an issue causing email delays for Microsoft 365 users in the UK, affecting the Mail Routing - Office 365 component for 1 hour. Engineers identified problematic servers in the UK region and rerouted traffic away from them to prevent further message delays. The incident was resolved by removing and replacing the affected servers, with monitoring confirming the error rate returned to normal levels.

An Azure storage failure in the EU2 region caused delays in message processing for Exclaimer's mail routing services, affecting both Office 365 and G Suite integrations. Messages processed in the EU region experienced delays during the 4.6-hour incident. The issue was resolved after Microsoft restored the Azure SQL database, engineers re-enabled EU2 endpoints, and confirmed all services returned to normal operation.

Exclaimer's client-side signature service experienced a 26.8-hour outage where users received "Failed to acquire auth token" errors when composing emails, preventing signatures from being applied during message composition. Email delivery remained unaffected, and users with server-side signature configurations continued to have signatures applied after sending messages. The issue was resolved through a combination of Microsoft reverting a problematic server-side change and Exclaimer deploying an add-in fix to improve authentication resilience.

Exclaimer experienced a 6.9-hour authentication issue where users attempting password login to the portal were unable to receive authentication tokens via email, preventing them from accessing their accounts. Microsoft and Google SSO logins remained functional throughout the incident. Engineers identified and reverted a problematic change to restore the authentication token delivery system.

Exclaimer's signature imprinting service experienced delays, causing email signatures to be applied slower than normal for customers. Engineers resolved the issue by adding additional capacity in the UK region. The incident lasted 15.2 hours before being fully resolved.

Exclaimer experienced a 16.7-hour outage affecting signature imprinting and portal access across multiple regions due to a Microsoft Azure outage. The incident caused intermittent failures for customers trying to access the Exclaimer Cloud UI and email signature services. Full functionality was restored after Microsoft resolved the underlying Azure infrastructure issues.

Exclaimer experienced an issue where multiple email signatures were being applied to messages, with duplicate signatures appearing even when one was already present. The problem was identified as being caused by changes in Outlook's behavior when emails with signatures were saved as drafts, triggering additional server-side signature applications. The issue was resolved after 360 hours through a combination of Exclaimer's add-in changes and a Microsoft fix.

Exclaimer customers in the MEA and US regions experienced email routing delays and deferrals when sending messages for server-side signature processing, with the issue lasting approximately 297 hours. The problem was identified as occurring outside of Exclaimer's infrastructure during the email routing process from Microsoft's servers, and Exclaimer worked with Microsoft to resolve the underlying connectivity issues. The incident was resolved after extended monitoring confirmed error rates had dropped to minimal levels across both regions.

Some users experienced issues accessing the Exclaimer Portal, with the portal getting stuck on a loading page when attempting to launch. The issue was partial, not affecting all users or subscriptions. Exclaimer engineers identified the root cause and deployed a fix after 71.6 hours, resolving the access problems for affected users.