# MMS Delivery Delays to AT&T Destinations

- Provider: [Telnyx](https://down.guide/telnyx)
- Level: confirmed
- Impact: Partial outage
- lasted 3h 12m
- started 2026-09-23 16:42 UTC
- NORAM
- id: DWN-8f52b8e932
- Official page: https://status.telnyx.com/incidents/01M37JATD5FD76Z3NB5SA52994

## Root cause
> We are working with our downstream partner to identify the cause of the delay.

[Postmortem](https://status.telnyx.com/incidents/01M37JATD5FD76Z3NB5SA52994)

## Updates from Telnyx
### 2026-09-23 16:42 UTC: investigating
We are investigating delayed MMS delivery to AT&T destinations. Messages are being delivered, but with delays. SMS to AT&T and MMS to other carriers are unaffected. We are working with our downstream partner to identify the cause of the delay.

### 2026-09-23 19:54 UTC: resolved
MMS delivery to AT&T destinations from 10DLC long codes returned to normal latency as of 18:30 UTC. Messages delayed during the incident were ultimately delivered; no resend is required.

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