Title: Any user may potentially be unable to receive email through moderated distribution groups intermittently
ID: EX211611
Status
Service Restored
Details
Title: Any user may potentially be unable to receive email through moderated distribution groups intermittently
User Impact: Users may have been unable to receive email sent to distribution groups that require moderator approval.
Final status: We've confirmed that our fix has saturated across all of the remaining affected environments, and confirmed with our automated monitoring system that service is restored.
Scope of impact: This issue may have affected any distribution group moderators attempting to approve emails. This may also have affected users in moderated distribution groups who were attempting to receive emails that required moderator approval.
Start time: Wednesday, April 29, 2020, at 3:55 AM UTC
End time: Tuesday, May 12, 2020, at 12:30 AM UTC
Root cause: An update to a component that digests internet headers was preventing it from reflecting the property that allows delivery of an email to a distribution group owner during the approval process.
Next steps:
-We're reviewing our component update procedures to improve our validation process to prevent similar issues from reoccurring.
This is the final update for the event.
Thank you,
The Microsoft team
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