Outage in Exclaimer
Message processing issues in UK
Resolved MinorIncident Report
Summary AI Generated
Exclaimer experienced message processing issues in the UK that affected Mail Routing for Office 365 users. The service degradation lasted 9.6 hours before the team identified the root cause and implemented a fix. Mail routing has returned to stable operation and is being monitored.
We are currently investigating this issue.
Components affected
Exclaimer Mail Routing - Office 365Need to monitor Exclaimer outages?
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Latest Updates ( sorted recent to last )
MONITORING
about 15 hours ago - at 03/18/2026 08:10AM
We have identified what was behind the degraded service in the UK and have put a fix in place to remediate the issue. Mail routing has returned to a stable state and we are currently monitoring the situation
INVESTIGATING
1 day ago - at 03/17/2026 10:59PM
We are currently investigating this issue.
Latest Exclaimer outages
Issues completing Exclaimer Cloud setup - Microsoft 365 - 14 days ago
Certificate Issuing Platform Emergency Maintenance - about 1 month ago
Exclaimer Cloud Portal not loading as expected - about 1 month ago
Message delivery issues - about 1 month ago
UK Server-side IP appearing on Sender Score Return Path Blocklist - about 1 month ago
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