Delay in small number of inbound post delivery checks

Resolved·Degraded performance

As of 18:20 UTC, there is no longer any impact to the US servers and all systems are operational.

Fri, Sep 4, 2026, 02:24 PM

(1 month ago)

Affected components

Sep 4, 2026, 01:28 PM

02:24 PM

Core Email Protection API

Updates

Resolved

As of 18:20 UTC, there is no longer any impact to the US servers and all systems are operational.

Fri, Sep 4, 2026, 02:24 PM

Monitoring

Proofpoint is recovering from an issue impacting multiple services: https://proofpoint.my.site.com/community/s/article/Proofpoint-Service-Interruption-Affecting-Cloud-Service-Portal-Access-04-SEP-2026

As a knock-on effect, we have seen a slight delay in a small number of post delivery checks. The system is currently recovering and we will update once all systems are operational.

Fri, Sep 4, 2026, 01:28 PM(56 minutes earlier)