Fastmail incident

Intermittent outbound delivery issues

Resolved after 2 hours 36 minutes, on May 27, 2026.

resolved May 28, 2026, 01:00 AM UTC

We identified a problem which caused intermittent outbound issues leading to some users experiencing deferrals or bounce backs. We have remediated the problem. No mail has been lost..

Started
May 27, 2026, 10:24 PM UTC
Resolved
May 28, 2026, 01:00 AM UTC
Duration
2h 36m
Detected by Pingoru
May 27, 2026, 10:24 PM UTC

Update timeline

  1. investigating May 27, 2026, 10:24 PM UTC

    We're investigating reports of outbound mail issues. Some users have been experiencing deferrals or bounce backs on outbound messages..

  2. resolved May 28, 2026, 01:00 AM UTC

    We identified a problem which caused intermittent outbound issues leading to some users experiencing deferrals or bounce backs. We have remediated the problem. No mail has been lost..

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