Elevated inbound recipient rejected
Final update
On November 13th, Mailgun incorrectly rejected a subset of inbound emails with a 550 "recipient rejected" error. Senders received bounce notifications even though delivery should have succeeded. Affected timeframes: US region: 05:14 to 06:41 UTC and 14:55 to 15:48 UTC EU region: 14:55 to 15:48 UTC Based on our analysis, approximately 25% of US inbound traffic and 50% of EU inbound traffic had a chance to have been impacted during these windows. We're unable to provide exact counts due to gaps in our logging for rejected inbound mail, which we have since corrected.
Timeline
- Resolved · Nov 13, 10:30 UTC
On November 13th, Mailgun incorrectly rejected a subset of inbound emails with a 550 "recipient rejected" error. Senders received bounce notifications even though delivery should have succeeded. Affected timeframes: US region: 05:14 to 06:41 UTC and 14:55 to 15:48 UTC EU region: 14:55 to 15:48 UTC Based on our analysis, approximately 25% of US inbound traffic and 50% of EU inbound traffic had a chance to have been impacted during these windows. We're unable to provide exact counts due to gaps in our logging for rejected inbound mail, which we have since corrected.
More from Mailgun
Full history| Started | Incident | Impact | Duration |
|---|---|---|---|
| Sep 1409:15 UTC | Route delays in EU Region | minor | 58m |
| Sep 414:16 UTC | EU Messaging Outage | critical | 17m |
| Sep 412:20 UTC | Microsoft Incident Resulting in Delivery Issues to M365 | none | 34m |
| Aug 3114:47 UTC | Event Log Delays in US Region | minor | 7h 14m |
| Aug 2720:38 UTC | EU Messaging Outage | critical | 37m |
| Aug 2016:19 UTC | GCP Reporting Multi Service Outage in US-West1 | minor | 1h 12m |
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