Service Degradation: On Demand Migration Domain Rewrite Email Delivery

Incident Report for Quest On Demand

Resolved

Our cloud service provider has resolved the degradation in Exchange Online. Queued messages in Domain Rewrite are being processed and delivered.
Posted Jun 03, 2026 - 05:06 UTC

Update

Our cloud service provider is actively resolving the service degradation, and we are already seeing improvements — queued messages in Domain Rewrite are now being processed and accepted by Exchange Online.

We are continuing to monitor the situation closely and will update this notice as further information becomes available.
Posted Jun 02, 2026 - 22:00 UTC

Monitoring

Our cloud service provider is actively resolving the service degradation, and we are already seeing improvements — queued messages in Domain Rewrite are now being processed and accepted by Exchange Online.

We are continuing to monitor the situation closely and will update this notice as further information becomes available.
Posted Jun 02, 2026 - 21:59 UTC

Update

Our cloud service provider is actively resolving the service degradation, and we are already seeing improvements — queued messages in Domain Rewrite are now being processed and accepted by Exchange Online.

We are continuing to monitor the situation closely and will update this notice as further information becomes available.
Posted Jun 02, 2026 - 21:50 UTC

Identified

Our cloud services provider is currently experiencing a service degradation in Exchange Online affecting customers using On Demand Migration Domain Rewrite. As a result, customers will experience significant delays or failures when sending and receiving emails.
Queued messages in Domain Rewrite will be delivered once the service from our cloud service provider is accepting incoming messages.

M365 Admins can track real-time updates on our cloud service provider's status page:
https://admin.cloud.microsoft/?source=applauncher#/servicehealth/:/alerts/EX1331830

We are actively monitoring the situation and will update this notice as soon as new information becomes available.
Posted Jun 02, 2026 - 20:45 UTC
This incident affected: Migration for Domain Rewrite (US Region, Australia Region, Canada Region, EU Region, UK Region).