Changes / Front / [smtp] Problems with outbound sending on custom SMTP channels
Front: Major incident: [smtp] Problems with outbound sending on custom SMTP channels
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 from the diff below (Sol; type: incident outage). Check the diff before relying on it.
What changed
Before: not present
After: [smtp] Problems with outbound sending on custom SMTP channels
Before: not present
After: major
Before: not present
After: resolved
Before: not present
After: 2026-10-05 07:42 UTC
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After: 2026-10-05 09:45 UTC
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After: SMTP (non-Gmail / O365)
Before: not present
After: We are investigating a spike in failures for outbound sending on a subset of custom SMTP channels.
Before: not present
After: We believe we have identified the cause and are deploying a fix.
Before: not present
After: The fix is deployed and the problem appears to be resolved. We are continuing to monitor.
Before: not present
After: This incident has been resolved.
First version of this incident archived by Rewindex. View the live incident.
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: [smtp] Problems with outbound sending on custom SMTP channels (this change) 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. | Major incident |