# Outbound Messaging Incident

- Provider: [Bandwidth](https://down.guide/bandwidth)
- Level: confirmed
- Impact: Major outage
- lasted 3d 2h
- started 2026-04-27 13:05 UTC
- SMS Messaging (SMPP), MMS Messaging (MM4), Toll-Free SMS - Outbound +1
- id: DWN-381fb3c759
- Official page: https://stspg.io/hd7287bsr5jg

## Updates from Bandwidth
### 2026-04-27 13:05 UTC: investigating
Bandwidth teams are investigating an outbound messaging incident, where customers are experiencing unexpected 4452 error codes. Teams are working to restore expected messaging behavior.

### 2026-04-27 15:55 UTC: investigating
Teams continue to investigate this incident.

### 2026-04-27 19:04 UTC: investigating
Teams continue to investigate this incident.

### 2026-04-27 19:59 UTC: identified
Teams have identified the source of this incident and are working to restore expected network behavior.

### 2026-04-28 12:27 UTC: identified
Trams continue work to resolve this incident. Ongoing mitigation work is underway.

### 2026-04-28 17:52 UTC: identified
Trams continue work to resolve this incident. Ongoing mitigation work is underway.

### 2026-04-28 18:56 UTC: monitoring
Teams are observing expected messaging behaviors, and will continue to monitor for stability.

### 2026-04-29 17:02 UTC: monitoring
Teams continue to observe expected messaging behaviors, and will continue to monitor for stability.

### 2026-04-30 15:57 UTC: resolved
This incident has been resolved.

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