Mailgun: Email Validation 500s

Impact: majorStatus: resolvedStarted 2025-09-11 22:56 UTCResolved 2025-09-12 02:19 UTC (3.4 h)6 updatesSource: stspg.io

Summary

Mailgun reported a major incident causing Email Validation 500 errors, affecting Deliverability Services - Email Validation and Email Validation. It started at 2025-09-11 22:56 UTC and was resolved at 2025-09-12 02:19 UTC, lasting 3 h 23 min; a fix was implemented and monitored before resolution.

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

Affected components: Deliverability Services - Email ValidationEmail Validation

Timeline of updates

investigating2025-09-11 22:56 UTC
We are currently investigating this issue.
identified2025-09-12 00:15 UTC
The issue has been identified and a fix is being implemented.
identified2025-09-12 01:00 UTC
The issue has been identified and we continue to work on a fix for this issue.
monitoring2025-09-12 02:07 UTC
A fix has been implemented and we are monitoring the results.
monitoring2025-09-12 02:07 UTC
We are continuing to monitor for any further issues.
resolved2025-09-12 02:19 UTC
This incident has been resolved.

Rewindex changes for this incident

Major incident: Email Validation 500s 2025-09-11 22:56 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