Authentication Incident #17005

Service Disruption for Authentication

Incident began at 2017-10-15 08:00 and ended at 2017-11-10 10:00 (all times are US/Pacific).

Date Time Description
Nov 10, 2017 10:00

Recently we found that the downstream email service partner of Firebase Authentication made some change which caused more email delivery delay than expected. The partner has tuned the service and the email deferral rate is back to normal.

To provide more technical background, almost all email providers (Gmail, YahooMail, Hotmail etc.) have build-in anti-spam mechanisms and continuously update the policy. When an email provider returns the standard 'Deferred' error code, the partner service would comply to the protocol and hold outgoing emails for sometime. If you have any question, please let us know.

Oct 31, 2017 15:51

We're looking into some slow Authentication email deliveries. Some messages are taking as long as 60 minutes to arrive. The impact is unclear at this point. We will update as we learn more.

All times are US/Pacific
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