Minor incident

OpenText: Zix SMB and Secure Cloud Encryption services Receiving "Unbalanced" reject for outgoing messages

Affected: Zix Encryption Services - Hosted SMB, Zix Encryption Services - Secure Cloud Email Encryption (AEE/ZEE)

Current status of OpenText: Partial outage — live OpenText status

Timeline

1. Oct 9, 2026, 15:09 UTC
   investigating
   Multiple services are currently experiencing an issue where senders of messages are receiving "unbalanced" as a reject/NDR notification. Teams are currently assembled and working to resolve the issue. We appreciate your patience. Tracking Number: forth coming
2. Oct 9, 2026, 15:12 UTC
   investigating
   Multiple services are currently experiencing an issue in which message senders are receiving "unbalanced" as a reject/NDR notification. Teams are currently assembled and working to resolve the issue. We appreciate your patience. Tracking Number: IM4015057
3. Oct 9, 2026, 15:24 UTC
   investigating
   Zix SMB and Secure Cloud Encryption services are currently experiencing an issue when senders of messages are receiving a reject notice/NDR with "Unbalanced" as the reason. Teams are currently assembled and working to resolve the issue. We appreciate your patience. Tracking Number: IM4015057
4. Oct 9, 2026, 16:06 UTC
   investigating
   Zix SMB and Secure Cloud Encryption Services are still experiencing an issue when sending outbound messaging. Teams have assembled, identified the problem, and are working to resolve the issue as quickly as possible. We appreciate your patience. Tracking Number: IM4015057
5. Oct 9, 2026, 16:25 UTC
   monitoring
   Zix SMB and Secure Cloud Encryption services experienced an issue where all outbound messages were rejected for "Unbalanced". Service has been restored and is being validated. We appreciate your patience. Tracking Number: IM4015057
6. Oct 9, 2026, 20:22 UTC
   resolved
   Zix SMB and Secure Cloud Encryption services experienced an issue when sending outbound messages. Users would experience messages being undelivered, with the NDR showing the issue as Unbalanced. The issue is now resolved. We appreciate your patience. Tracking Number: IM4015057

Updates as published by OpenText (original).