Mailgun: Click and Open Tracking Degraded (US Regions)

Impact: majorStatus: resolvedStarted 2026-08-11 05:32 UTCResolved 2026-08-11 07:07 UTC (1.6 h)4 updatesSource: stspg.io

Summary

Mailgun reported a major denial-of-service attack against click and open tracking servers in US regions, causing some requests to time out or fail. The incident started at 2026-08-11 05:32 UTC and was resolved at 2026-08-11 07:07 UTC, lasting 1 h 35 min; a fix was implemented by 06:54 UTC.

Machine-written from the archived incident (Sol). Check the timeline before relying on it.

Affected components: Email Services - Events & LogsEvents & Logs

Timeline of updates

investigating2026-08-11 05:32 UTC
We are currently experiencing a denial of service attack against our click and open tracking servers in our US regions. Remediation work is underway. Some requests may time out or fail at this time.
identified2026-08-11 05:32 UTC
The issue has been identified and a fix is being implemented.
monitoring2026-08-11 06:54 UTC
A fix has been implemented and we are monitoring the results.
resolved2026-08-11 07:07 UTC
This incident has been resolved.

Rewindex changes for this incident

Major incident: Click and Open Tracking Degraded (US Regions) 2026-08-11 05:32 UTC

Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Mailgun profile · Recent Mailgun incidents · Markdown · JSON