Summary of Impact: Between 09:30 and 11:45 UTC new customers would have been unable to sign up to the Exclaimer Cloud service.
Root Cause: Our 3rd party certificate supplier was experiencing issues with certificate issuance. Exclaimer Cloud requires each customer to have a unique certificate to ensure secure email delivery between O365 and Exclaimer Cloud.
Mitigation: Engineers at the 3rd party worked to resolve the issue.
Next Steps: We will continue to work with our 3rd party to understand the issue in more detail.