Major incident

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

Affected: SMTP (non-Gmail / O365)

Current status of Front: Operational — live Front status

Timeline

1. Oct 5, 2026, 07:42 UTC
   investigating
   We are investigating a spike in failures for outbound sending on a subset of custom SMTP channels.
2. Oct 5, 2026, 08:34 UTC
   identified
   We believe we have identified the cause and are deploying a fix.
3. Oct 5, 2026, 09:13 UTC
   monitoring
   The fix is deployed and the problem appears to be resolved. We are continuing to monitor.
4. Oct 5, 2026, 09:45 UTC
   resolved
   This incident has been resolved.

Updates as published by Front (original).