# Problems with outbound sending on custom SMTP channels

- Provider: [Front](https://down.guide/front)
- Level: confirmed
- Impact: Partial outage
- lasted 2h 3m
- started 2026-10-05 07:42 UTC
- SMTP (non-Gmail / O365)
- id: DWN-10d692f665
- Official page: https://stspg.io/sqplmrllzj6p

## Root cause
> We believe we have identified the cause and are deploying a fix.

[Postmortem](https://stspg.io/sqplmrllzj6p)

## Updates from Front
### 2026-10-05 07:42 UTC: investigating
We are investigating a spike in failures for outbound sending on a subset of custom SMTP channels.

### 2026-10-05 08:34 UTC: identified
We believe we have identified the cause and are deploying a fix.

### 2026-10-05 09:13 UTC: monitoring
The fix is deployed and the problem appears to be resolved. We are continuing to monitor.

### 2026-10-05 09:45 UTC: resolved
This incident has been resolved.

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