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

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-09-22 22:13 UTC · Resolved: 2026-09-23 19:48 UTC · Duration: 22 h
- Updates: 3 · Affected components: NORAM
- [Vendor status page: https://status.telnyx.com/incidents/01M35JWEAYFHA19VRKF8D9H27H](https://status.telnyx.com/incidents/01M35JWEAYFHA19VRKF8D9H27H)
- [Company: Telnyx](https://rewindex.com/company/telnyx.md)

## Timeline of updates

- **investigating** 2026-09-22 22:13 UTC: 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.
- **monitoring** 2026-09-23 16:15 UTC: 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.
- **resolved** 2026-09-23 19:48 UTC: 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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Canonical: https://rewindex.com/company/telnyx/incidents/01M35JWEAYFHA19VRKF8D9H27H · Markdown: https://rewindex.com/company/telnyx/incidents/01M35JWEAYFHA19VRKF8D9H27H.md · JSON: https://rewindex.com/api/v1/companies/telnyx/incidents/01M35JWEAYFHA19VRKF8D9H27H · Generated 2026-10-19T21:10:18.811Z