# Front: [smtp] Problems with outbound sending on custom SMTP channels

- Impact (vendor’s label): major
- Status: resolved
- Started: 2026-10-05 07:42 UTC · Resolved: 2026-10-05 09:45 UTC · Duration: 2.0 h
- Updates: 4 · Affected components: SMTP (non-Gmail / O365)
- [Vendor status page: https://stspg.io/sqplmrllzj6p](https://stspg.io/sqplmrllzj6p)
- [Company: Front](https://rewindex.com/company/front.md)

## Summary

Front reported a major outage affecting outbound sending on a subset of custom SMTP channels, listed as SMTP (non-Gmail / O365). It started at 2026-10-05 07:42 UTC and was resolved at 2026-10-05 09:45 UTC, lasting 2 h 2 min. Front deployed a fix but did not specify the cause. _(machine-written, sol)_
## Timeline of updates

- **investigating** 2026-10-05 07:42 UTC: We are investigating a spike in failures for outbound sending on a subset of custom SMTP channels.
- **identified** 2026-10-05 08:34 UTC: We believe we have identified the cause and are deploying a fix.
- **monitoring** 2026-10-05 09:13 UTC: The fix is deployed and the problem appears to be resolved. We are continuing to monitor.
- **resolved** 2026-10-05 09:45 UTC: This incident has been resolved.

## Rewindex changes for this incident

- 2026-10-05 07:42 UTC: [Major incident: \[smtp\] Problems with outbound sending on custom SMTP channels](https://rewindex.com/change/i01b53925689589.md)


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Canonical: https://rewindex.com/company/front/incidents/0fxy345c37zw · Markdown: https://rewindex.com/company/front/incidents/0fxy345c37zw.md · JSON: https://rewindex.com/api/v1/companies/front/incidents/0fxy345c37zw · Generated 2026-10-18T09:41:04.823Z