IRONSCALES incident

Email Inspection Delays for O365 Customers in US Region

Resolved after 3 hours 50 minutes, affecting Office 365 Protection, on June 16, 2025.

resolved Jun 16, 2025, 04:26 PM UTC

The issue affecting inspection and mitigation processes for O365 customers in US-hosted IRONSCALES environments has been fully resolved. System performance has remained stable, and no further delays have been observed. IRONSCALES continues to monitor all systems to ensure ongoing reliability. We appreciate your patience and understanding throughout this incident.

Started
Jun 16, 2025, 12:36 PM UTC
Resolved
Jun 16, 2025, 04:26 PM UTC
Duration
3h 50m
Detected by Pingoru
Jun 16, 2025, 12:36 PM UTC

Affected components

Office 365 Protection

Update timeline

  1. investigating Jun 16, 2025, 12:36 PM UTC

    IRONSCALES is currently experiencing delays in email inspection and mitigation processes for O365 customers hosted in the US region. The R&D team is actively investigating the issue to identify the root cause and implement a resolution. Email delivery remains unaffected, and messages continue to flow into the system as expected.

  2. identified Jun 16, 2025, 01:08 PM UTC

    IRONSCALES has identified the cause of the email inspection delays affecting O365 customers in US-hosted IRONSCALES environments. The issue is related to the system’s responsiveness to increased email traffic volume. Mitigation efforts have been applied to improve processing capacity, and delays are expected to be fully resolved within approximately two hours. Email delivery and security inspections remain fully operational.

  3. monitoring Jun 16, 2025, 03:44 PM UTC

    IRONSCALES has completed the processing of delayed inspection and mitigation processes for O365 customers in US-hosted environments. System operations have returned to normal, and inspection times are back to expected levels. The team is continuing to closely monitor the email queue to ensure sustained performance.

  4. resolved Jun 16, 2025, 04:26 PM UTC

    The issue affecting inspection and mitigation processes for O365 customers in US-hosted IRONSCALES environments has been fully resolved. System performance has remained stable, and no further delays have been observed. IRONSCALES continues to monitor all systems to ensure ongoing reliability. We appreciate your patience and understanding throughout this incident.

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