# Elevated MMS Failures for 10DLC 501(c)(3) Campaigns

- Provider: [Telnyx](https://down.guide/telnyx)
- Level: confirmed
- Impact: Degraded
- lasted 21h 35m
- started 2026-09-22 22:13 UTC
- NORAM
- id: DWN-f2dc965373
- Official page: https://status.telnyx.com/incidents/01M35JWEAYFHA19VRKF8D9H27H

## Updates from Telnyx
### 2026-09-22 22:13 UTC: investigating
We are investigating an elevated rate of MMS send failures (error 40008) affecting 10DLC senders assigned to 501(c)(3) tax-exempt campaigns. Not all traffic in this segment is affected; we are working to identify the exact scope. SMS 501(c)(3) traffic is not impacted as well as SMS and MMS traffic on normal 10DLC routes.

### 2026-09-23 16:15 UTC: monitoring
Our downstream partner has implemented a fix for an issue causing MMS messages from 10DLC senders on 501(c)(3) tax-exempt campaigns to be falsely rejected with error 40008. Error rates have returned to normal levels since the fix was applied. We are currently monitoring live traffic.

### 2026-09-23 19:48 UTC: resolved
Our downstream partner's fix for MMS messages from 10DLC senders on 501(c)(3) tax-exempt campaigns being falsely rejected with error 40008 has been confirmed. Error rates have remained at normal levels throughout the monitoring period.

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