Delayed inbound email processing for some FogBugz mailboxes

Update timeline

1. identified Jul 27, 2026, 03:30 AM UTC

   We identified an issue in the endpoint-discovery path used by a subset of Exchange Online mailbox configurations. We are applying a mitigation to bypass the affected path and validating recovery across affected mailboxes. Delayed inbound email processing may continue while remediation is in progress.

2. monitoring Jul 27, 2026, 02:07 PM UTC

   We identified delayed inbound email processing affecting a subset of FogBugz email integrations. A configuration change has been applied to the affected integrations, and processing has resumed for those validated so far. We are continuing to monitor recovery and validate the remaining affected integration. We will provide a final update once validation is complete.

3. monitoring Jul 27, 2026, 11:59 PM UTC

   A workaround has been successfully applied, and inbound email processing has resumed for the affected integrations. We are continuing to monitor the service while we work on a permanent fix. We will provide another update if there are any material changes or further impact.

4. monitoring Jul 29, 2026, 12:10 AM UTC

   We continue to monitor the service following the mitigation applied earlier. Inbound email processing remains operational, and no additional impact has been identified at this time. Our team is continuing to work toward a permanent resolution. We will provide another update if there are any material changes.

5. resolved Jul 30, 2026, 11:51 PM UTC

   This incident has been resolved. Inbound email processing remains operational, and no additional impact has been observed following the mitigation.