OpenText incident

IM3952049 - Zix - Hosted Exchange (HEX) - mailbox delivery issue

Major Resolved View vendor source →

OpenText experienced a major incident on June 28, 2026 affecting Zix Hosted Exchange, lasting 2d 8h. The incident has been resolved; the full update timeline is below.

Started
Jun 28, 2026, 02:20 AM UTC
Resolved
Jun 30, 2026, 10:58 AM UTC
Duration
2d 8h
Detected by Pingoru
Jun 28, 2026, 02:20 AM UTC

Affected components

Zix Hosted Exchange

Update timeline

  1. investigating Jun 28, 2026, 02:20 AM UTC

    We are currently investigating an issue where some users are experiencing HEX mailbox delivery problems. IM3952049

  2. investigating Jun 28, 2026, 12:44 PM UTC

    IM3952049 - We are continuing to investigate the issue. While some mitigation steps have been attempted, the root cause has not yet been identified. Our engineering team is actively working on this and we will provide further updates as we have more information.

  3. monitoring Jun 29, 2026, 08:10 AM UTC

    We have deployed a fix that has resolved the issue. The team is continuing to monitor the system closely to ensure everything remains stable. IM3952049

  4. resolved Jun 30, 2026, 10:58 AM UTC

    This incident has been resolved.