# Mailgun: US Email Ingest Errors

> Mailgun status incident “US Email Ingest Errors” on 2025-10-08: impact minor (vendor’s label), -120 min, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/mailgun/incidents/lk05vdk90nb3
Last updated: 2025-10-08T15:00:13Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-10-08 15:00 UTC · Resolved: 2025-10-08 13:00 UTC · Duration: -120 min
- Updates: 1
- [Vendor status page: https://stspg.io/q31bk5hd19d6](https://stspg.io/q31bk5hd19d6)
- [Company: Mailgun](https://rewindex.com/company/mailgun.md)

## Timeline of updates

- **resolved** 2025-10-08 13:00 UTC: Between 12:55 UTC and 13:07 UTC, customers may have experienced email sending failures in the US region. A deployment of new code caused our sending pipeline to temporarily reject some email submissions with HTTP 500 or SMTP 451 errors (~ 2.5% of requests). Our team quickly identified the issue, rolled back the deployment, and restored normal service. Traffic was immediately shifted from the affected US region to the non impacted region to further mitigate customer impact while the rollback took place.

## Cite this

Status incident (vendor impact label: minor) posted by Mailgun, started 2025-10-08 15:00 UTC, resolved after -120 min, 1 update(s).

- Canonical URL: https://rewindex.com/company/mailgun/incidents/lk05vdk90nb3
- Citation: Mailgun, “US Email Ingest Errors” (2025-10-08 15:00 UTC). Archived by Rewindex: https://rewindex.com/company/mailgun/incidents/lk05vdk90nb3 (CC BY 4.0).
- Markdown link: `[Mailgun: US Email Ingest Errors (2025-10-08)](https://rewindex.com/company/mailgun/incidents/lk05vdk90nb3)`


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Canonical: https://rewindex.com/company/mailgun/incidents/lk05vdk90nb3 · Markdown: https://rewindex.com/company/mailgun/incidents/lk05vdk90nb3.md · JSON: https://rewindex.com/api/v1/companies/mailgun/incidents/lk05vdk90nb3 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T15:21:10.848Z