Paubox incident

Intermittent delivery delay affecting customers emailing hotmail.com & outlook.com

Resolved after 21 hours 13 minutes, affecting Outbound Security, on February 25, 2026.

resolved Feb 26, 2026, 07:38 PM UTC

We are no longer observing intermittent delays - all mail that was deferred yesterday has been delivered.

Affected components

Outbound Security

monitoring Feb 25, 2026, 10:25 PM UTC

We are observing intermittent delivery delays affecting a limited subset of outbound messages to certain external domains (including hotmail.com and outlook.com). Our systems remain fully operational. We are actively monitoring and adjusting sending patterns as needed.
resolved Feb 26, 2026, 07:38 PM UTC

We are no longer observing intermittent delays - all mail that was deferred yesterday has been delivered.

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